[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Tags added: 4.4 sru-20230612 xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning. <<>>
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Changed in: linux (Ubuntu Bionic) Assignee: Po-Hsu Lin (cypressyew) => (unassigned) ** Changed in: ubuntu-kernel-tests Assignee: Po-Hsu Lin (cypressyew) => (unassigned) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Found on: bionic/linux-aws: 4.15.0-.118 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning.
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Found on bionic/linux-azure-fips/4.15.0-2035.39 ** Tags added: sru-20210816 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
It looks like this is a bit risky to backport this. I will hold off the patch unless it can make the way into stable upstream. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Found on bionic/azure-4.15 4.15.0-1122.135 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning.
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Changed in: ubuntu-kernel-tests Status: In Progress => Confirmed ** Changed in: linux (Ubuntu Bionic) Status: In Progress => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: Confirmed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Confirmed Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Sorry, the above is for Impish, not hirsute: Found on Impish/linux 5.13.0-9.9 host kili. passes on host vought ** Tags removed: hirsute ** Tags added: impish -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Found on hirsute/linux 5.13.0-9.9 host kili. passes on host vought ** Tags added: hirsute sru-20210719 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Found on B/azure 4.15.0-1120-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning. <<>>
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Observed in B/oracle (kernel 4.15), cycle sru-20210621. ** Tags added: oracle -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
Observed in B/aws (kernel 4.15), cycle sru-20210621. ** Tags added: aws -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Tags added: sru-20210621 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning. <<>>
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
https://lists.ubuntu.com/archives/kernel-team/2021-June/121571.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: - LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) - [ cut here ] - rq->tmp_alone_branch != >leaf_cfs_rq_list - WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 - Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 - CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu - Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 - RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 - RSP: 0018:989ebfc03e80 EFLAGS: 00010082 - RAX: RBX: 989eb4c6ac00 RCX: - RDX: 0005 RSI: acb63c4d RDI: 0046 - RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 - R10: R11: 0001 R12: 989eb57fe400 - R13: 989ebfc21900 R14: 0001 R15: 0001 - FS: () GS:989ebfc0() knlGS: - CS: 0010 DS: ES: CR0: 80050033 - CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 - DR0: DR1: DR2: - DR3: DR6: fffe0ff0 DR7: 0400 - Call Trace: - - distribute_cfs_runtime+0xc3/0x110 - sched_cfs_period_timer+0xff/0x220 - ? sched_cfs_slack_timer+0xd0/0xd0 - __hrtimer_run_queues+0xdf/0x230 - hrtimer_interrupt+0xa0/0x1d0 - smp_apic_timer_interrupt+0x6f/0x140 - apic_timer_interrupt+0x90/0xa0 - - RIP: 0010:native_safe_halt+0x12/0x20 - RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 - RAX: abbc9280 RBX: RCX: - RDX: RSI: RDI: - RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 - R10: R11: 7fff R12: - R13: R14: R15: - ? __sched_text_end+0x1/0x1 - default_idle+0x20/0x100 - arch_cpu_idle+0x15/0x20 - default_idle_call+0x23/0x30 - do_idle+0x172/0x1f0 - cpu_startup_entry+0x73/0x80 - rest_init+0xae/0xb0 - start_kernel+0x4dc/0x500 - x86_64_start_reservations+0x24/0x26 - x86_64_start_kernel+0x74/0x77 - secondary_startup_64+0xa5/0xb0 - Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 - ---[ end trace b6b9a70bc2945c0c ]--- + LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ cut here ] + rq->tmp_alone_branch != >leaf_cfs_rq_list + WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 + CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu + Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 + RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 + RSP: 0018:989ebfc03e80 EFLAGS: 00010082 + RAX: RBX: 989eb4c6ac00 RCX: + RDX: 0005 RSI: acb63c4d RDI: 0046 + RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 + R10: R11: 0001 R12: 989eb57fe400 + R13: 989ebfc21900 R14: 0001 R15: 0001 + FS: () GS:989ebfc0() knlGS: + CS: 0010 DS: ES: CR0: 80050033 + CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 + DR0: DR1:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Tags added: fips -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, we will need these fixes: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables / coding style changes introduced in the following commits (and their corresponding fixes): * 97fb7a0a8944bd sched: Clean up and harmonize the coding style of the scheduler code base * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning. <<>>
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] - Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). + Test case cfs_bandwidth01 in LTP sched test suite is a reproducer + of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix + enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: - LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) - [ cut here ] - rq->tmp_alone_branch != >leaf_cfs_rq_list - WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 - Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 - CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu - Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 - RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 - RSP: 0018:989ebfc03e80 EFLAGS: 00010082 - RAX: RBX: 989eb4c6ac00 RCX: - RDX: 0005 RSI: acb63c4d RDI: 0046 - RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 - R10: R11: 0001 R12: 989eb57fe400 - R13: 989ebfc21900 R14: 0001 R15: 0001 - FS: () GS:989ebfc0() knlGS: - CS: 0010 DS: ES: CR0: 80050033 - CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 - DR0: DR1: DR2: - DR3: DR6: fffe0ff0 DR7: 0400 - Call Trace: - - distribute_cfs_runtime+0xc3/0x110 - sched_cfs_period_timer+0xff/0x220 - ? sched_cfs_slack_timer+0xd0/0xd0 - __hrtimer_run_queues+0xdf/0x230 - hrtimer_interrupt+0xa0/0x1d0 - smp_apic_timer_interrupt+0x6f/0x140 - apic_timer_interrupt+0x90/0xa0 - - RIP: 0010:native_safe_halt+0x12/0x20 - RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 - RAX: abbc9280 RBX: RCX: - RDX: RSI: RDI: - RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 - R10: R11: 7fff R12: - R13: R14: R15: - ? __sched_text_end+0x1/0x1 - default_idle+0x20/0x100 - arch_cpu_idle+0x15/0x20 - default_idle_call+0x23/0x30 - do_idle+0x172/0x1f0 - cpu_startup_entry+0x73/0x80 - rest_init+0xae/0xb0 - start_kernel+0x4dc/0x500 - x86_64_start_reservations+0x24/0x26 - x86_64_start_kernel+0x74/0x77 - secondary_startup_64+0xa5/0xb0 - Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 - ---[ end trace b6b9a70bc2945c0c ]--- + LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ cut here ] + rq->tmp_alone_branch != >leaf_cfs_rq_list + WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 + CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu + Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 + RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 + RSP: 0018:989ebfc03e80 EFLAGS: 00010082 + RAX: RBX: 989eb4c6ac00 RCX: + RDX: 0005 RSI: acb63c4d RDI: 0046 + RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 + R10: R11: 0001 R12: 989eb57fe400 + R13: 989ebfc21900 R14: 0001 R15: 0001 + FS: () GS:989ebfc0() knlGS: +
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] Base on the test case description, these fixes are needed: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables introduced in the following commits (and their corresponding fixes): * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other - commit claim to a fix of these but didn't see any. + commit claim to be a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without triggering this warning. I have also run the whole sched test suite in LTP to make sure there is no other issues caused by this patchset. [Where problems could occur] * Completely Fair Scheduler (CFS) is a vital part in the kernel, if the patch is incorrect it will affect the sched functionality. [Other Info] Test case description: * Creates a multi-level CGroup hierarchy with the cpu controller * enabled. The leaf groups are populated with "busy" processes which * simulate
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] + Base on the test case description, these fixes are needed: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() - Backport needed for Bionic since we're missing some new variables introduced in the following commits and their corresponding fixes: + Backport needed for Bionic since we're missing some new variables introduced in the following commits (and their corresponding fixes): * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ - With these patches applied, the test can pass without any issue. + With these patches applied, the test can pass without triggering this + warning. - I have also run the whole sched test suite in LTP to make sure it didn't - cause any other problem. + I have also run the whole sched test suite in LTP to make sure there is + no other issues caused by this patchset. - [Regression Potential] - * Completely Fair Scheduler (CFS) is a vital part in the kernel, + [Where problems could
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Changed in: ubuntu-kernel-tests Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: linux (Ubuntu Bionic) Status: New => In Progress ** Changed in: ubuntu-kernel-tests Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables introduced in the following commits and their corresponding fixes: * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to a fix of these but didn't see any. [Test] Test kernel can be found here:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Tags added: gt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1931325 Title: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15 Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: New Bug description: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of a CFS unthrottle_cfs_rq() issue (fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning). This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables introduced in the following commits and their corresponding fixes: * 9f68395333ad7f sched/pelt: Add a new runnable average signal * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq I have also searched in the upstream tree to see if there is any other commit claim to a fix of these but didn't see any. [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without any issue. I have also run the whole sched test suite in LTP to make sure it didn't cause any other problem. [Regression Potential] * Completely Fair Scheduler (CFS) is a vital part in the kernel, [Other Info] Test case description: * Creates
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] - Test case cfs_bandwidth01 in LTP sched test suite is a reproducer for the following commits: - * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning - * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more - * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list - * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path - * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() + Test case cfs_bandwidth01 in LTP sched test suite is a reproducer of the CFS unthrottle_cfs_rq() issue: - This test will trigger warning on our 4.15 kernel: + This test triggers a warning on our 4.15 kernel: LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ cut here ] rq->tmp_alone_branch != >leaf_cfs_rq_list WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 RSP: 0018:989ebfc03e80 EFLAGS: 00010082 RAX: RBX: 989eb4c6ac00 RCX: RDX: 0005 RSI: acb63c4d RDI: 0046 RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 R10: R11: 0001 R12: 989eb57fe400 R13: 989ebfc21900 R14: 0001 R15: 0001 FS: () GS:989ebfc0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: distribute_cfs_runtime+0xc3/0x110 sched_cfs_period_timer+0xff/0x220 ? sched_cfs_slack_timer+0xd0/0xd0 __hrtimer_run_queues+0xdf/0x230 hrtimer_interrupt+0xa0/0x1d0 smp_apic_timer_interrupt+0x6f/0x140 apic_timer_interrupt+0x90/0xa0 RIP: 0010:native_safe_halt+0x12/0x20 RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 RAX: abbc9280 RBX: RCX: RDX: RSI: RDI: RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 R10: R11: 7fff R12: R13: R14: R15: ? __sched_text_end+0x1/0x1 default_idle+0x20/0x100 arch_cpu_idle+0x15/0x20 default_idle_call+0x23/0x30 do_idle+0x172/0x1f0 cpu_startup_entry+0x73/0x80 rest_init+0xae/0xb0 start_kernel+0x4dc/0x500 x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x74/0x77 secondary_startup_64+0xa5/0xb0 Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 ---[ end trace b6b9a70bc2945c0c ]--- [Fix] - * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning - * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more - * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list - * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path - * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() + * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning + * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more + * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list + * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path + * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Backport needed for Bionic since we're missing some new variables introduced in the following commits and their corresponding fixes: - * 9f68395333ad7f sched/pelt: Add a new runnable average signal - * 6212437f0f6043 sched/fair: Fix runnable_avg for throttled cfs - * 43e9f7f231e40e sched/fair: Start tracking SCHED_IDLE tasks count in cfs_rq + * 9f68395333ad7f sched/pelt: Add a new runnable average signal + * 6212437f0f6043 sched/fair: Fix runnable_avg
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer for the following commits: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() This test will trigger warning on our 4.15 kernel: - LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) - [ cut here ] - rq->tmp_alone_branch != >leaf_cfs_rq_list - WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 - Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 - CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu - Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 - RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 - RSP: 0018:989ebfc03e80 EFLAGS: 00010082 - RAX: RBX: 989eb4c6ac00 RCX: - RDX: 0005 RSI: acb63c4d RDI: 0046 - RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 - R10: R11: 0001 R12: 989eb57fe400 - R13: 989ebfc21900 R14: 0001 R15: 0001 - FS: () GS:989ebfc0() knlGS: - CS: 0010 DS: ES: CR0: 80050033 - CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 - DR0: DR1: DR2: - DR3: DR6: fffe0ff0 DR7: 0400 - Call Trace: - - distribute_cfs_runtime+0xc3/0x110 - sched_cfs_period_timer+0xff/0x220 - ? sched_cfs_slack_timer+0xd0/0xd0 - __hrtimer_run_queues+0xdf/0x230 - hrtimer_interrupt+0xa0/0x1d0 - smp_apic_timer_interrupt+0x6f/0x140 - apic_timer_interrupt+0x90/0xa0 - - RIP: 0010:native_safe_halt+0x12/0x20 - RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 - RAX: abbc9280 RBX: RCX: - RDX: RSI: RDI: - RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 - R10: R11: 7fff R12: - R13: R14: R15: - ? __sched_text_end+0x1/0x1 - default_idle+0x20/0x100 - arch_cpu_idle+0x15/0x20 - default_idle_call+0x23/0x30 - do_idle+0x172/0x1f0 - cpu_startup_entry+0x73/0x80 - rest_init+0xae/0xb0 - start_kernel+0x4dc/0x500 - x86_64_start_reservations+0x24/0x26 - x86_64_start_kernel+0x74/0x77 - secondary_startup_64+0xa5/0xb0 - Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 - ---[ end trace b6b9a70bc2945c0c ]--- - + LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ cut here ] + rq->tmp_alone_branch != >leaf_cfs_rq_list + WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 + CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu + Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 + RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 + RSP: 0018:989ebfc03e80 EFLAGS: 00010082 + RAX: RBX: 989eb4c6ac00 RCX: + RDX: 0005 RSI: acb63c4d RDI: 0046 + RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 + R10: R11: 0001 R12: 989eb57fe400 + R13:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Changed in: linux (Ubuntu) Status: New => Fix Released ** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer for the following commits: * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() This test will trigger warning on our 4.15 kernel: - [ 694.761774] LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) - [ 695.801637] [ cut here ] - [ 695.801640] rq->tmp_alone_branch != >leaf_cfs_rq_list - [ 695.801694] WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 - [ 695.801695] Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 - [ 695.801726] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu - [ 695.801727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 - [ 695.801729] RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 - [ 695.801730] RSP: 0018:989ebfc03e80 EFLAGS: 00010082 - [ 695.801732] RAX: RBX: 989eb4c6ac00 RCX: - [ 695.801732] RDX: 0005 RSI: acb63c4d RDI: 0046 - [ 695.801734] RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 - [ 695.801734] R10: R11: 0001 R12: 989eb57fe400 - [ 695.801735] R13: 989ebfc21900 R14: 0001 R15: 0001 - [ 695.801737] FS: () GS:989ebfc0() knlGS: - [ 695.801738] CS: 0010 DS: ES: CR0: 80050033 - [ 695.801739] CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 - [ 695.801742] DR0: DR1: DR2: - [ 695.801743] DR3: DR6: fffe0ff0 DR7: 0400 - [ 695.801744] Call Trace: - [ 695.801755] - [ 695.801765] distribute_cfs_runtime+0xc3/0x110 - [ 695.801767] sched_cfs_period_timer+0xff/0x220 - [ 695.801768] ? sched_cfs_slack_timer+0xd0/0xd0 - [ 695.801775] __hrtimer_run_queues+0xdf/0x230 - [ 695.801777] hrtimer_interrupt+0xa0/0x1d0 - [ 695.801786] smp_apic_timer_interrupt+0x6f/0x140 - [ 695.801789] apic_timer_interrupt+0x90/0xa0 - [ 695.801789] - [ 695.801791] RIP: 0010:native_safe_halt+0x12/0x20 - [ 695.801792] RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 - [ 695.801793] RAX: abbc9280 RBX: RCX: - [ 695.801794] RDX: RSI: RDI: - [ 695.801795] RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 - [ 695.801796] R10: R11: 7fff R12: - [ 695.801796] R13: R14: R15: - [ 695.801801] ? __sched_text_end+0x1/0x1 - [ 695.801804] default_idle+0x20/0x100 - [ 695.801813] arch_cpu_idle+0x15/0x20 - [ 695.801814] default_idle_call+0x23/0x30 - [ 695.801821] do_idle+0x172/0x1f0 - [ 695.801823] cpu_startup_entry+0x73/0x80 - [ 695.801825] rest_init+0xae/0xb0 - [ 695.801843] start_kernel+0x4dc/0x500 - [ 695.801845] x86_64_start_reservations+0x24/0x26 - [ 695.801847] x86_64_start_kernel+0x74/0x77 - [ 695.801851] secondary_startup_64+0xa5/0xb0 - [ 695.801852] Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 - [ 695.801875] ---[ end trace b6b9a70bc2945c0c ]--- + LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ cut here ] + rq->tmp_alone_branch != >leaf_cfs_rq_list + WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] Test case cfs_bandwidth01 in LTP sched test suite is a reproducer for the following commits: - * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning - * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more - * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list - * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path - * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() + * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning + * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more + * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list + * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path + * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() Without these patches, this test will trigger warning: [ 694.761774] LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ 695.801637] [ cut here ] [ 695.801640] rq->tmp_alone_branch != >leaf_cfs_rq_list [ 695.801694] WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 [ 695.801695] Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 [ 695.801726] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu [ 695.801727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 695.801729] RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 [ 695.801730] RSP: 0018:989ebfc03e80 EFLAGS: 00010082 [ 695.801732] RAX: RBX: 989eb4c6ac00 RCX: [ 695.801732] RDX: 0005 RSI: acb63c4d RDI: 0046 [ 695.801734] RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 [ 695.801734] R10: R11: 0001 R12: 989eb57fe400 [ 695.801735] R13: 989ebfc21900 R14: 0001 R15: 0001 [ 695.801737] FS: () GS:989ebfc0() knlGS: [ 695.801738] CS: 0010 DS: ES: CR0: 80050033 [ 695.801739] CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 [ 695.801742] DR0: DR1: DR2: [ 695.801743] DR3: DR6: fffe0ff0 DR7: 0400 [ 695.801744] Call Trace: [ 695.801755] [ 695.801765] distribute_cfs_runtime+0xc3/0x110 [ 695.801767] sched_cfs_period_timer+0xff/0x220 [ 695.801768] ? sched_cfs_slack_timer+0xd0/0xd0 [ 695.801775] __hrtimer_run_queues+0xdf/0x230 [ 695.801777] hrtimer_interrupt+0xa0/0x1d0 [ 695.801786] smp_apic_timer_interrupt+0x6f/0x140 [ 695.801789] apic_timer_interrupt+0x90/0xa0 [ 695.801789] [ 695.801791] RIP: 0010:native_safe_halt+0x12/0x20 [ 695.801792] RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 [ 695.801793] RAX: abbc9280 RBX: RCX: [ 695.801794] RDX: RSI: RDI: [ 695.801795] RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 [ 695.801796] R10: R11: 7fff R12: [ 695.801796] R13: R14: R15: [ 695.801801] ? __sched_text_end+0x1/0x1 [ 695.801804] default_idle+0x20/0x100 [ 695.801813] arch_cpu_idle+0x15/0x20 [ 695.801814] default_idle_call+0x23/0x30 [ 695.801821] do_idle+0x172/0x1f0 [ 695.801823] cpu_startup_entry+0x73/0x80 [ 695.801825] rest_init+0xae/0xb0 [ 695.801843] start_kernel+0x4dc/0x500 [ 695.801845] x86_64_start_reservations+0x24/0x26 [ 695.801847] x86_64_start_kernel+0x74/0x77 [ 695.801851] secondary_startup_64+0xa5/0xb0 [ 695.801852] Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 [ 695.801875] ---[ end trace b6b9a70bc2945c0c ]--- [Fix] [Test] Test kernel can be found here: https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ With these patches applied, the test can pass without any issue. I have also run the whole sched test suite in LTP to make sure it didn't
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: [Impact] + Test case cfs_bandwidth01 in LTP sched test suite is a reproducer for the following commits: + * fe61468b2cbc2b sched/fair: Fix enqueue_task_fair warning + * b34cb07dde7c23 sched/fair: Fix enqueue_task_fair() warning some more + * 39f23ce07b9355 sched/fair: Fix unthrottle_cfs_rq() for leaf_cfs_rq list + * 6d4d22468dae3d sched/fair: Reorder enqueue/dequeue_task_fair path + * 5ab297bab98431 sched/fair: Fix reordering of enqueue/dequeue_task_fair() + Without these patches, this test will trigger warning: + [ 694.761774] LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ 695.801637] [ cut here ] + [ 695.801640] rq->tmp_alone_branch != >leaf_cfs_rq_list + [ 695.801694] WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + [ 695.801695] Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 + [ 695.801726] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu + [ 695.801727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 + [ 695.801729] RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 + [ 695.801730] RSP: 0018:989ebfc03e80 EFLAGS: 00010082 + [ 695.801732] RAX: RBX: 989eb4c6ac00 RCX: + [ 695.801732] RDX: 0005 RSI: acb63c4d RDI: 0046 + [ 695.801734] RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 + [ 695.801734] R10: R11: 0001 R12: 989eb57fe400 + [ 695.801735] R13: 989ebfc21900 R14: 0001 R15: 0001 + [ 695.801737] FS: () GS:989ebfc0() knlGS: + [ 695.801738] CS: 0010 DS: ES: CR0: 80050033 + [ 695.801739] CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 + [ 695.801742] DR0: DR1: DR2: + [ 695.801743] DR3: DR6: fffe0ff0 DR7: 0400 + [ 695.801744] Call Trace: + [ 695.801755] + [ 695.801765] distribute_cfs_runtime+0xc3/0x110 + [ 695.801767] sched_cfs_period_timer+0xff/0x220 + [ 695.801768] ? sched_cfs_slack_timer+0xd0/0xd0 + [ 695.801775] __hrtimer_run_queues+0xdf/0x230 + [ 695.801777] hrtimer_interrupt+0xa0/0x1d0 + [ 695.801786] smp_apic_timer_interrupt+0x6f/0x140 + [ 695.801789] apic_timer_interrupt+0x90/0xa0 + [ 695.801789] + [ 695.801791] RIP: 0010:native_safe_halt+0x12/0x20 + [ 695.801792] RSP: 0018:ac603e28 EFLAGS: 0246 ORIG_RAX: ff11 + [ 695.801793] RAX: abbc9280 RBX: RCX: + [ 695.801794] RDX: RSI: RDI: + [ 695.801795] RBP: ac603e28 R08: 00af39850067 R09: 989e73749d00 + [ 695.801796] R10: R11: 7fff R12: + [ 695.801796] R13: R14: R15: + [ 695.801801] ? __sched_text_end+0x1/0x1 + [ 695.801804] default_idle+0x20/0x100 + [ 695.801813] arch_cpu_idle+0x15/0x20 + [ 695.801814] default_idle_call+0x23/0x30 + [ 695.801821] do_idle+0x172/0x1f0 + [ 695.801823] cpu_startup_entry+0x73/0x80 + [ 695.801825] rest_init+0xae/0xb0 + [ 695.801843] start_kernel+0x4dc/0x500 + [ 695.801845] x86_64_start_reservations+0x24/0x26 + [ 695.801847] x86_64_start_kernel+0x74/0x77 + [ 695.801851] secondary_startup_64+0xa5/0xb0 + [ 695.801852] Code: 50 09 00 00 49 39 85 60 09 00 00 74 68 80 3d 3a 6e 54 01 00 75 5f 31 db 48 c7 c7 c0 3d 2d ac c6 05 28 6e 54 01 01 e8 11 36 fc ff <0f> 0b 48 85 db 74 43 49 8b 85 78 09 00 00 49 39 85 70 09 00 00 + [ 695.801875] ---[ end trace b6b9a70bc2945c0c ]--- + + [Fix] + + + [Test] + Test kernel can be found here: + https://people.canonical.com/~phlin/kernel/lp-1931325-cfs_bandwidth01/ + + With these patches applied, the test can pass without any issue. + + I have also run the whole sched test suite in LTP to make sure it didn't + cause any other problem. + + [Regression Potential] + + + [Original Bug Report] Issue found on Azure 4.15.0-1116.129 Bionic This is a new test case added 8 days ago. So this is not a regression: https://github.com/linux-test-project/ltp/commit/d7b2d7cea71feaea1f27cae185abfe39f238d649 Test log: cfs_bandwidth01.c:49: TINFO: Set 'worker1/cpu.max' =
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: + [Impact] + Issue found on Azure 4.15.0-1116.129 Bionic This is a new test case added 8 days ago. So this is not a regression: https://github.com/linux-test-project/ltp/commit/d7b2d7cea71feaea1f27cae185abfe39f238d649 Test log: cfs_bandwidth01.c:49: TINFO: Set 'worker1/cpu.max' = '3000 1' cfs_bandwidth01.c:49: TINFO: Set 'worker2/cpu.max' = '2000 1' cfs_bandwidth01.c:49: TINFO: Set 'worker3/cpu.max' = '3000 1' cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited tst_test.c:1349: TFAIL: Kernel is now tainted. HINT: You _MAY_ be missing kernel fixes, see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39f23ce07b93 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b34cb07dde7c https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fe61468b2cbc https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ab297bab984 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d4d22468dae Summary: passed 10 failed 1 broken 0 skipped 0 warnings 0 tag=cfs_bandwidth01 stime=1622734092 dur=15 exit=exited stat=1 core=no cu=478 cs=303 Note that this test has failed on the following instances: * Basic_A2 * Standard_B1ms * Standard_D48_v3 * Standard_F32s_v2 But passed with: * Standard_DS15_v2 * Standard_DS5_v2 - When this issue happens, kernel will be tainted with warning: [ 694.761774] LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) [ 695.801637] [ cut here ] [ 695.801640] rq->tmp_alone_branch != >leaf_cfs_rq_list [ 695.801694] WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 [ 695.801695] Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 [ 695.801726] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu [ 695.801727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 695.801729] RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 [ 695.801730] RSP: 0018:989ebfc03e80 EFLAGS: 00010082 [ 695.801732] RAX: RBX: 989eb4c6ac00 RCX: [ 695.801732] RDX: 0005 RSI: acb63c4d RDI: 0046 [ 695.801734] RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 [ 695.801734] R10: R11: 0001 R12: 989eb57fe400 [ 695.801735] R13: 989ebfc21900 R14: 0001 R15: 0001 [ 695.801737] FS: () GS:989ebfc0() knlGS: [ 695.801738] CS: 0010 DS: ES: CR0: 80050033 [ 695.801739] CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 [ 695.801742] DR0: DR1: DR2: [ 695.801743] DR3: DR6: fffe0ff0 DR7: 0400 [ 695.801744] Call Trace: [ 695.801755] [ 695.801765] distribute_cfs_runtime+0xc3/0x110 [ 695.801767] sched_cfs_period_timer+0xff/0x220 [ 695.801768] ? sched_cfs_slack_timer+0xd0/0xd0 [ 695.801775] __hrtimer_run_queues+0xdf/0x230 [ 695.801777] hrtimer_interrupt+0xa0/0x1d0 [ 695.801786] smp_apic_timer_interrupt+0x6f/0x140 [ 695.801789] apic_timer_interrupt+0x90/0xa0 [ 695.801789] [ 695.801791] RIP: 0010:native_safe_halt+0x12/0x20 [ 695.801792] RSP:
[Kernel-packages] [Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15
** Description changed: Issue found on Azure 4.15.0-1116.129 Bionic This is a new test case added 8 days ago. So this is not a regression: https://github.com/linux-test-project/ltp/commit/d7b2d7cea71feaea1f27cae185abfe39f238d649 Test log: cfs_bandwidth01.c:49: TINFO: Set 'worker1/cpu.max' = '3000 1' cfs_bandwidth01.c:49: TINFO: Set 'worker2/cpu.max' = '2000 1' cfs_bandwidth01.c:49: TINFO: Set 'worker3/cpu.max' = '3000 1' cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 1' cfs_bandwidth01.c:125: TPASS: Workers exited tst_test.c:1349: TFAIL: Kernel is now tainted. HINT: You _MAY_ be missing kernel fixes, see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39f23ce07b93 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b34cb07dde7c https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fe61468b2cbc https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ab297bab984 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d4d22468dae Summary: passed 10 failed 1 broken 0 skipped 0 warnings 0 tag=cfs_bandwidth01 stime=1622734092 dur=15 exit=exited stat=1 core=no cu=478 cs=303 Note that this test has failed on the following instances: - * Basic_A2 - * Standard_B1ms - * Standard_D48_v3 - * Standard_F32s_v2 + * Basic_A2 + * Standard_B1ms + * Standard_D48_v3 + * Standard_F32s_v2 But passed with: - * Standard_DS15_v2 - * Standard_DS5_v2 + * Standard_DS15_v2 + * Standard_DS5_v2 + + + When this issue happens, kernel will be tainted with warning: + [ 694.761774] LTP: starting cfs_bandwidth01 (cfs_bandwidth01 -i 5) + [ 695.801637] [ cut here ] + [ 695.801640] rq->tmp_alone_branch != >leaf_cfs_rq_list + [ 695.801694] WARNING: CPU: 0 PID: 0 at /build/linux-fYK9kF/linux-4.15.0/kernel/sched/fair.c:393 unthrottle_cfs_rq+0x16f/0x200 + [ 695.801695] Modules linked in: input_leds joydev serio_raw mac_hid qemu_fw_cfg kvm_intel kvm irqbypass sch_fq_codel binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse virtio_blk pata_acpi floppy virtio_net i2c_piix4 + [ 695.801726] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-144-generic #148-Ubuntu + [ 695.801727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 + [ 695.801729] RIP: 0010:unthrottle_cfs_rq+0x16f/0x200 + [ 695.801730] RSP: 0018:989ebfc03e80 EFLAGS: 00010082 + [ 695.801732] RAX: RBX: 989eb4c6ac00 RCX: + [ 695.801732] RDX: 0005 RSI: acb63c4d RDI: 0046 + [ 695.801734] RBP: 989ebfc03ea8 R08: 00af39e61b33 R09: acb63c20 + [ 695.801734] R10: R11: 0001 R12: 989eb57fe400 + [ 695.801735] R13: 989ebfc21900 R14: 0001 R15: 0001 + [ 695.801737] FS: () GS:989ebfc0() knlGS: + [ 695.801738] CS: 0010 DS: ES: CR0: 80050033 + [ 695.801739] CR2: 55593258d618 CR3: 7a044000 CR4: 06f0 + [ 695.801742] DR0: DR1: DR2: + [ 695.801743] DR3: DR6: fffe0ff0 DR7: 0400 + [ 695.801744] Call Trace: + [ 695.801755] + [ 695.801765] distribute_cfs_runtime+0xc3/0x110 + [ 695.801767] sched_cfs_period_timer+0xff/0x220 + [ 695.801768] ? sched_cfs_slack_timer+0xd0/0xd0 + [ 695.801775] __hrtimer_run_queues+0xdf/0x230 + [ 695.801777] hrtimer_interrupt+0xa0/0x1d0 + [ 695.801786] smp_apic_timer_interrupt+0x6f/0x140 + [ 695.801789]
