[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Tags added: cscc -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Status in linux source package in Cosmic: Fix Released Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Changed in: ubuntu-z-systems Status: Fix Committed => Fix Released -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Status in linux source package in Cosmic: Fix Released Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
This bug was fixed in the package linux - 4.15.0-48.51 --- linux (4.15.0-48.51) bionic; urgency=medium * linux: 4.15.0-48.51 -proposed tracker (LP: #1822820) * Packaging resync (LP: #1786013) - [Packaging] update helper scripts - [Packaging] resync retpoline extraction * 3b080b2564287be91605bfd1d5ee985696e61d3c in ubuntu_btrfs_kernel_fixes triggers system hang on i386 (LP: #1812845) - btrfs: raid56: properly unmap parity page in finish_parity_scrub() * [P9][LTCTest][Opal][FW910] cpupower monitor shows multiple stop Idle_Stats (LP: #1719545) - cpupower : Fix header name to read idle state name * [amdgpu] screen corruption when using touchpad (LP: #1818617) - drm/amdgpu/gmc: steal the appropriate amount of vram for fw hand-over (v3) - drm/amdgpu: Free VGA stolen memory as soon as possible. * [SRU][B/C/OEM]IOMMU: add kernel dma protection (LP: #1820153) - ACPICA: AML parser: attempt to continue loading table after error - ACPI / property: Allow multiple property compatible _DSD entries - PCI / ACPI: Identify untrusted PCI devices - iommu/vt-d: Force IOMMU on for platform opt in hint - iommu/vt-d: Do not enable ATS for untrusted devices - thunderbolt: Export IOMMU based DMA protection support to userspace - iommu/vt-d: Disable ATS support on untrusted devices * Add basic support to NVLink2 passthrough (LP: #1819989) - powerpc/powernv/npu: Do not try invalidating 32bit table when 64bit table is enabled - powerpc/powernv: call OPAL_QUIESCE before OPAL_SIGNAL_SYSTEM_RESET - powerpc/powernv: Export opal_check_token symbol - powerpc/powernv: Make possible for user to force a full ipl cec reboot - powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn - powerpc/powernv: Move npu struct from pnv_phb to pci_controller - powerpc/powernv/npu: Move OPAL calls away from context manipulation - powerpc/pseries/iommu: Use memory@ nodes in max RAM address calculation - powerpc/pseries/npu: Enable platform support - powerpc/pseries: Remove IOMMU API support for non-LPAR systems - powerpc/powernv/npu: Check mmio_atsd array bounds when populating - powerpc/powernv/npu: Fault user page into the hypervisor's pagetable * Huawei Hi1822 NIC has poor performance (LP: #1820187) - net-next: hinic: fix a problem in free_tx_poll() - hinic: remove ndo_poll_controller - net-next/hinic: add checksum offload and TSO support - hinic: Fix l4_type parameter in hinic_task_set_tunnel_l4 - net-next/hinic:replace multiply and division operators - net-next/hinic:add rx checksum offload for HiNIC - net-next/hinic:fix a bug in set mac address - net-next/hinic: fix a bug in rx data flow - net: hinic: fix null pointer dereference on pointer hwdev - hinic: optmize rx refill buffer mechanism - net-next/hinic:add shutdown callback - net-next/hinic: replace disable_irq_nosync/enable_irq * [CONFIG] please enable highdpi font FONT_TER16x32 (LP: #1819881) - Fonts: New Terminus large console font - [Config]: enable highdpi Terminus 16x32 font support * [19.04 FEAT] qeth: Enhanced link speed - kernel part (LP: #1814892) - s390/qeth: report 25Gbit link speed * CVE-2017-5754 - x86/nmi: Fix NMI uaccess race against CR3 switching - x86/mm: Fix documentation of module mapping range with 4-level paging - x86/pti: Enable global pages for shared areas - x86/pti: Never implicitly clear _PAGE_GLOBAL for kernel image - x86/pti: Leave kernel text global for !PCID - x86/pti: Fix boot problems from Global-bit setting - x86/pti: Fix boot warning from Global-bit setting - x86/pti: Reduce amount of kernel text allowed to be Global - x86/pti: Disallow global kernel text with RANDSTRUCT - x86/entry/32: Add explicit 'l' instruction suffix - x86/asm-offsets: Move TSS_sp0 and TSS_sp1 to asm-offsets.c - x86/entry/32: Rename TSS_sysenter_sp0 to TSS_entry2task_stack - x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler - x86/entry/32: Put ESPFIX code into a macro - x86/entry/32: Unshare NMI return path - x86/entry/32: Split off return-to-kernel path - x86/entry/32: Enter the kernel via trampoline stack - x86/entry/32: Leave the kernel via trampoline stack - x86/entry/32: Introduce SAVE_ALL_NMI and RESTORE_ALL_NMI - x86/entry/32: Handle Entry from Kernel-Mode on Entry-Stack - x86/entry/32: Simplify debug entry point - x86/entry/32: Add PTI cr3 switch to non-NMI entry/exit points - x86/entry/32: Add PTI CR3 switches to NMI handler code - x86/entry: Rename update_sp0 to update_task_stack - x86/pgtable: Rename pti_set_user_pgd() to pti_set_user_pgtbl() - x86/pgtable/pae: Unshare kernel PMDs when PTI is enabled - x86/pgtable/32: Allocate 8k page-tables when PTI is enabled - x86/pgtable: Move pgdp kernel/user conversion functions to pgtable.h
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
This bug was fixed in the package linux - 4.18.0-18.19 --- linux (4.18.0-18.19) cosmic; urgency=medium * linux: 4.18.0-18.19 -proposed tracker (LP: #1822796) * Packaging resync (LP: #1786013) - [Packaging] update helper scripts - [Packaging] resync retpoline extraction * 3b080b2564287be91605bfd1d5ee985696e61d3c in ubuntu_btrfs_kernel_fixes triggers system hang on i386 (LP: #1812845) - btrfs: raid56: properly unmap parity page in finish_parity_scrub() * [SRU][B/C/OEM]IOMMU: add kernel dma protection (LP: #1820153) - ACPI / property: Allow multiple property compatible _DSD entries - PCI / ACPI: Identify untrusted PCI devices - iommu/vt-d: Force IOMMU on for platform opt in hint - iommu/vt-d: Do not enable ATS for untrusted devices - thunderbolt: Export IOMMU based DMA protection support to userspace - iommu/vt-d: Disable ATS support on untrusted devices * Huawei Hi1822 NIC has poor performance (LP: #1820187) - net-next: hinic: fix a problem in free_tx_poll() - hinic: remove ndo_poll_controller - net-next/hinic: add checksum offload and TSO support - hinic: Fix l4_type parameter in hinic_task_set_tunnel_l4 - net-next/hinic:replace multiply and division operators - net-next/hinic:add rx checksum offload for HiNIC - net-next/hinic:fix a bug in set mac address - net-next/hinic: fix a bug in rx data flow - net: hinic: fix null pointer dereference on pointer hwdev - hinic: optmize rx refill buffer mechanism - net-next/hinic:add shutdown callback - net-next/hinic: replace disable_irq_nosync/enable_irq * [CONFIG] please enable highdpi font FONT_TER16x32 (LP: #1819881) - Fonts: New Terminus large console font - [Config]: enable highdpi Terminus 16x32 font support * [19.04 FEAT] qeth: Enhanced link speed - kernel part (LP: #1814892) - s390/qeth: report 25Gbit link speed * Avoid potential memory corruption on HiSilicon SoCs (LP: #1819546) - iommu/arm-smmu-v3: Avoid memory corruption from Hisilicon MSI payloads * CVE-2017-5715 - x86/speculation: Apply IBPB more strictly to avoid cross-process data leak - x86/speculation: Propagate information about RSB filling mitigation to sysfs - x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant - x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support - x86/retpoline: Remove minimal retpoline support - x86/speculation: Update the TIF_SSBD comment - x86/speculation: Clean up spectre_v2_parse_cmdline() - x86/speculation: Remove unnecessary ret variable in cpu_show_common() - x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common() - x86/speculation: Disable STIBP when enhanced IBRS is in use - x86/speculation: Rename SSBD update functions - x86/speculation: Reorganize speculation control MSRs update - sched/smt: Make sched_smt_present track topology - x86/Kconfig: Select SCHED_SMT if SMP enabled - sched/smt: Expose sched_smt_present static key - x86/speculation: Rework SMT state change - x86/l1tf: Show actual SMT state - x86/speculation: Reorder the spec_v2 code - x86/speculation: Mark string arrays const correctly - x86/speculataion: Mark command line parser data __initdata - x86/speculation: Unify conditional spectre v2 print functions - x86/speculation: Add command line control for indirect branch speculation - x86/speculation: Prepare for per task indirect branch speculation control - x86/process: Consolidate and simplify switch_to_xtra() code - x86/speculation: Avoid __switch_to_xtra() calls - x86/speculation: Prepare for conditional IBPB in switch_mm() - ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS - x86/speculation: Split out TIF update - x86/speculation: Prevent stale SPEC_CTRL msr content - x86/speculation: Prepare arch_smt_update() for PRCTL mode - x86/speculation: Add prctl() control for indirect branch speculation - x86/speculation: Enable prctl mode for spectre_v2_user - x86/speculation: Add seccomp Spectre v2 user space protection mode - x86/speculation: Provide IBPB always command line options - kvm: svm: Ensure an IBPB on all affected CPUs when freeing a vmcb - x86/speculation: Change misspelled STIPB to STIBP - x86/speculation: Add support for STIBP always-on preferred mode - x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE * [Ubuntu] vfio-ap: add subsystem to matrix device to avoid libudev failures (LP: #1818854) - s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem * Kernel regularly logs: Bluetooth: hci0: last event is not cmd complete (0x0f) (LP: #1748565) - Bluetooth: Fix unnecessary error message for HCI request completion * HiSilicon HNS ethernet broken in 4.15.0-45 (LP: #1818294) - net: hns: Fix WARNING when hns
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Successfully verified on cosmic: ubuntu@hwe0002:~/stress-ng$ apt-cache policy linux-generic linux-generic: Installed: 4.18.0.18.19 Candidate: 4.18.0.18.19 Version table: *** 4.18.0.18.19 500 500 http://us.ports.ubuntu.com/ubuntu-ports cosmic-proposed/main s390x Packages 100 /var/lib/dpkg/status 4.18.0.17.18 500 500 http://us.ports.ubuntu.com/ubuntu-ports cosmic-updates/main s390x Packages 500 http://ports.ubuntu.com/ubuntu-ports cosmic-security/main s390x Packages 4.18.0.10.11 500 500 http://us.ports.ubuntu.com/ubuntu-ports cosmic/main s390x Packages ubuntu@hwe0002:~/stress-ng$ uname -r 4.18.0-18-generic ubuntu@hwe0002:~/stress-ng$ ./stress-ng --sysfs 0 -t 60 stress-ng: info: [11889] dispatching hogs: 4 sysfs stress-ng: info: [11889] successful run completed in 60.00s (1 min, 0.00 secs) ubuntu@hwe0002:~/stress-ng$ and on bionic: ubuntu@hwe0007:~/stress-ng$ apt-cache policy linux-generic linux-generic: Installed: 4.15.0.48.50 Candidate: 4.15.0.48.50 Version table: *** 4.15.0.48.50 500 500 http://us.ports.ubuntu.com/ubuntu-ports bionic-proposed/main s390x Packages 100 /var/lib/dpkg/status 4.15.0.47.49 500 500 http://us.ports.ubuntu.com/ubuntu-ports bionic-updates/main s390x Packages 500 http://ports.ubuntu.com/ubuntu-ports bionic-security/main s390x Packages 4.15.0.20.23 500 500 http://us.ports.ubuntu.com/ubuntu-ports bionic/main s390x Packages ubuntu@hwe0007:~/stress-ng$ uname -r 4.15.0-48-generic ubuntu@hwe0007:~/stress-ng$ ./stress-ng --sysfs 0 -t 60 stress-ng: info: [9386] dispatching hogs: 4 sysfs stress-ng: info: [9386] successful run completed in 60.00s (1 min, 0.00 secs) ubuntu@hwe0007:~/stress-ng$ Adjusting tags accordingly... ** Tags removed: verification-needed-bionic verification-needed-cosmic ** Tags added: verification-done verification-done-bionic verification-done-cosmic -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag 'verification-needed-cosmic' to 'verification-failed- cosmic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-cosmic ** Tags added: verification-needed-bionic -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281]
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Changed in: ubuntu-z-systems Status: In Progress => Fix Committed -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Cosmic) Status: In Progress => Fix Committed -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [SRU Justification] == Impact == Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. == Fix == The following two upstream commits (from v5.0 upstream) will fix the issue: 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() 2448a299ec41 virtio/s390: avoid race on vcdev->config == Testcase == see below == Risk of Regression == Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Description changed: + [SRU Justification] + + == Impact == + Several helper functions in the s390x code which handle accessing sysfs attributes were missing protection against races. Concurrent access would be able to trigger kernel bugs. + + == Fix == + The following two upstream commits (from v5.0 upstream) will fix the issue: + + 78b1a52e05c9 virtio/s390: fix race in ccw_io_helper() + 2448a299ec41 virtio/s390: avoid race on vcdev->config + + == Testcase == + see below + + == Risk of Regression == + Changes are isolated to architecture code and are verified by running the stress testing, so overall should be low. + + uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Just checked and Disco 5.0.0-7.8 is now released. ** Changed in: linux (Ubuntu) Status: Fix Committed => Fix Released ** Also affects: linux (Ubuntu Cosmic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Cosmic) Importance: Undecided => High ** Changed in: linux (Ubuntu Cosmic) Status: New => Triaged -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: In Progress Status in linux source package in Cosmic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Just double checked and can confirm that the commits "virtio/s390: avoid race on vcdev->config" and "virtio/s390: fix race in ccw_io_helper()" landed in disco-proposed kernel "Ubuntu-5.0.0-7.8" (as "2448a29" and "78b1a52"). Hence changing disco entry to Fix Committed. ** Changed in: linux (Ubuntu) Status: In Progress => Fix Committed -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: In Progress Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm:
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Just to confirm that 2448a299ec416a80f699940a86f4a6d9a4f643b1 and 78b1a52e05c9db11d293342e8d6d8a230a04b4e7 are in the Ubuntu 5.0 kernel since Ubuntu-5.0.0-0.1 -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Looks like this got pulled into mainline: $ git describe 2448a299ec416a80f699940a86f4a6d9a4f643b1 v4.20-rc5-2-g2448a299ec41 $ git describe 78b1a52e05c9db11d293342e8d6d8a230a04b4e7 v4.20-rc5-3-g78b1a52e05c9 Should we request kernel team to pull these into ubuntu SRUs trees? or have these been alredy been CC'ed for stable trees and are part of point releases anyway? -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Changed in: linux (Ubuntu Bionic) Status: Triaged => In Progress ** Changed in: linux (Ubuntu) Status: Triaged => In Progress ** Changed in: ubuntu-z-systems Status: Triaged => 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
OK, thanks for the info so far, apologies for being slow to get back to you. -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk]) [ 25.170846]R:0 T:1 IO:1 EX:1
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Host information: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu 16.04.4 LTS Release:16.04 Codename: xenial uname -a Linux s2lp5 4.4.0-130-generic #156-Ubuntu SMP Thu Jun 14 09:18:59 UTC 2018 s390x s390x s390x GNU/Linux qemu: 2.5+dfsg-5ubuntu10.30 this was created using uvt: #!/bin/bash # # Quick and dirty script to create temporary guests which are reachable # from the kernel VPN via uvt-kvm. After creation one has to login once # via "virsh console " to figure out the ip address. :/ BASEDIR=$(dirname $0) if [ "$1" = "" ]; then echo "$(basename $0) " exit 1 fi VMNAME="$1" shift uvt-kvm create --cpu 2 --memory 2048 --disk 20 --password ubuntu \ --template $BASEDIR/uvt-template.xml $VMNAME arch=s390x "$@" uvt-template.xml: hvm 1 destroy restart preserve /usr/bin/qemu-system-s390x Hope that's enough info -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in:
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Tags added: architecture-s39064 bugnameltc-170918 severity-high targetmilestone-inin1804 -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk]) [ 25.170846]
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Also affects: ubuntu-z-systems Importance: Undecided Status: New ** Changed in: ubuntu-z-systems Status: New => Triaged ** Changed in: ubuntu-z-systems Assignee: (unassigned) => bugproxy (bugproxy) ** Tags added: reverse-proxy-bugzilla s390x -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in Ubuntu on IBM z Systems: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic Steps to reproduce this bug: git clone git://kernel.ubuntu.com/cking/stress-ng cd stress-ng make clean make And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Description changed: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic + + Steps to reproduce this bug: + + git clone git://kernel.ubuntu.com/cking/stress-ng + cd stress-ng + make clean + make + + And run with: ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! - [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP + [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) - [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 - [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 - [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 - [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 - [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 - [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 + [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 + [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 + [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 + [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 + [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 + [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] - [ 119.446283] + [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- - For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! - [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP + [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk])
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
I think this is a race in ccw_io_helper(). The stress-ng sysfs stressor is running multiple threaded reads of /sys/devices/css0/0.0./0.0./virtio0/block/vda/cache_type which results in reads via virtio_cread8() and ultimately reads using virtio_ccw_get_config() I added debug into virtio_cread8 and it returns 1 99% of the time, and sometimes in a threaded read we get it returning garbage, such as 200 in the following trace: [ 39.76] virtio_cread8 32 -> 1 [ 39.767933] virtio_cread8 32 -> 1 [ 39.787712] virtio_cread8 32 -> 200 [ 39.787810] kernel BUG at drivers/block/virtio_blk.c:576! -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
FYI, I've added easier detection of which sysfs file is causing this with commit: http://kernel.ubuntu.com/git/cking/stress- ng.git/commit/?id=690b6392645219702f410318a3c99bee7c4f192b -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk]) [ 25.170846]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 25.170849]
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
Maybe related to: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-bionic/bionic/s390x/l/linux/20180822_104342_a8a5e@/log.gz ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Colin Ian King (colin-king) -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk]) [ 25.170846]
[Kernel-packages] [Bug 1788432] Re: 4.15 s390x kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565!
** Changed in: linux (Ubuntu) Status: Incomplete => Triaged ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Triaged ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High -- 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/1788432 Title: 4.15 s390x kernel BUG at /build/linux- Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: uname -a Linux ckingvm1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux and same for 4.15.0-29-generic and 4.17.0-8-generic ./stress-ng --sysfs 0 -t 60 .. wait a few seconds and then: [ 119.445891] [ cut here ] [ 119.445898] kernel BUG at /build/linux-Gycr4Z/linux-4.15.0/drivers/block/virtio_blk.c:565! [ 119.446093] illegal operation: 0001 ilc:1 [#3] SMP [ 119.446100] Modules linked in: binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic vfio_ccw sha512_s390 sha256_s390 vfio_mdev sha1_s390 sha_common mdev vfio_iommu_type1 vfio sch_fq_codel 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 btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net crc32_vx_s390 virtio_blk [ 119.446166] CPU: 1 PID: 5420 Comm: stress-ng-sysfs Tainted: P DO 4.15.0-33-generic #36-Ubuntu [ 119.446168] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 119.446170] Krnl PSW : 12d313d3 405835bc (virtblk_cache_type_show+0x82/0x88 [virtio_blk]) [ 119.446177]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 [ 119.446194] Krnl GPRS: de6dc5c2779af7d7 7ffaba20 0040 6545 [ 119.446196]03ff800058da 6546 6bf537c0 6b60a100 [ 119.446198] 00690648 7cc3de40 7a74b000 [ 119.446202]03ff80008210 03ff800058da 7ac1bce8 [ 119.446210] Krnl Code: 03ff80005912: ebbff0a80004 lmg %r11,%r15,168(%r15) [ 119.446210]03ff80005918: c0f40560 brcl 15,3ff800063d8 [ 119.446210] #03ff8000591e: a7f40001 brc 15,3ff80005920 [ 119.446210] >03ff80005922: 0707 bcr 0,%r7 [ 119.446210]03ff80005924: 0707 bcr 0,%r7 [ 119.446210]03ff80005926: 0707 bcr 0,%r7 [ 119.446210]03ff80005928: c004 brcl 0,3ff80005928 [ 119.446210]03ff8000592e: eb6ff0480024 stmg %r6,%r15,72(%r15) [ 119.446226] Call Trace: [ 119.446229] ([<03ff800058da>] virtblk_cache_type_show+0x3a/0x88 [virtio_blk]) [ 119.446234] [<00690684>] dev_attr_show+0x3c/0x80 [ 119.446240] [<00424ab4>] sysfs_kf_seq_show+0xbc/0x1a8 [ 119.446259] [<003b048c>] seq_read+0xec/0x4c8 [ 119.446262] [<003821ea>] vfs_read+0x8a/0x150 [ 119.446274] [<00382786>] SyS_read+0x66/0xe0 [ 119.446278] [<008e3028>] system_call+0xdc/0x2c8 [ 119.446279] Last Breaking-Event-Address: [ 119.446281] [<03ff8000591e>] virtblk_cache_type_show+0x7e/0x88 [virtio_blk] [ 119.446283] [ 119.446284] ---[ end trace 2c2403d726047e4a ]--- For 4.17.0-8-generic: [ 25.170715] kernel BUG at drivers/block/virtio_blk.c:574! [ 25.170795] illegal operation: 0001 ilc:1 [#1] SMP [ 25.170797] Modules linked in: lttng_statedump(OE) lttng_clock(OE) lttng_lib_ring_buffer(OE) binfmt_misc zfs(PO) zunicode(PO) zavl(PO) icp(PO) isofs zcommon(PO) znvpair(PO) spl(O) ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common vfio_ccw vfio_mdev mdev vfio_iommu_type1 vfio sch_fq_codel ib_iser rdma_cm iw_cm ib_cm nfsd ib_core auth_rpcgss iscsi_tcp nfs_acl lockd grace libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc ip_tables x_tables btrfs zstd_compress zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 linear virtio_net virtio_blk crc32_vx_s390 [ 25.170835] CPU: 0 PID: 5590 Comm: stress-ng-sysfs Tainted: P OE 4.17.0-8-generic #9-Ubuntu [ 25.170837] Hardware name: IBM 2964 N63 400 (KVM/Linux) [ 25.170839] Krnl PSW : 05f0c968 26542d57 (virtblk_cache_type_show+0x7c/0x80 [virtio_blk])
