[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
--- Comment From hbath...@in.ibm.com 2019-08-23 07:42 EDT--- The issue is not seen anymore with 4.15.0-59.66~16.04.1 ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
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- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'. 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-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Tags removed: targetmilestone-inin--- ** Tags added: targetmilestone-inin18042 -- 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: ubuntu-power-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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908] [c001f5f1fa90] [c0179a70]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: linux (Ubuntu) Status: In Progress => 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
This bug was fixed in the package linux - 4.15.0-55.60 --- linux (4.15.0-55.60) bionic; urgency=medium * linux: 4.15.0-55.60 -proposed tracker (LP: #1834954) * Request backport of ceph commits into bionic (LP: #1834235) - ceph: use atomic_t for ceph_inode_info::i_shared_gen - ceph: define argument structure for handle_cap_grant - ceph: flush pending works before shutdown super - ceph: send cap releases more aggressively - ceph: single workqueue for inode related works - ceph: avoid dereferencing invalid pointer during cached readdir - ceph: quota: add initial infrastructure to support cephfs quotas - ceph: quota: support for ceph.quota.max_files - ceph: quota: don't allow cross-quota renames - ceph: fix root quota realm check - ceph: quota: support for ceph.quota.max_bytes - ceph: quota: update MDS when max_bytes is approaching - ceph: quota: add counter for snaprealms with quota - ceph: avoid iput_final() while holding mutex or in dispatch thread * QCA9377 isn't being recognized sometimes (LP: #1757218) - SAUCE: USB: Disable USB2 LPM at shutdown * hns: fix ICMP6 neighbor solicitation messages discard problem (LP: #1833140) - net: hns: fix ICMP6 neighbor solicitation messages discard problem - net: hns: fix unsigned comparison to less than zero * Fix occasional boot time crash in hns driver (LP: #1833138) - net: hns: Fix probabilistic memory overwrite when HNS driver initialized * use-after-free in hns_nic_net_xmit_hw (LP: #1833136) - net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw() * hns: attempt to restart autoneg when disabled should report error (LP: #1833147) - net: hns: Restart autoneg need return failed when autoneg off * systemd 237-3ubuntu10.14 ADT test failure on Bionic ppc64el (test-seccomp) (LP: #1821625) - powerpc: sys_pkey_alloc() and sys_pkey_free() system calls - powerpc: sys_pkey_mprotect() system call * [UBUNTU] pkey: Indicate old mkvp only if old and curr. mkvp are different (LP: #1832625) - pkey: Indicate old mkvp only if old and current mkvp are different * [UBUNTU] kernel: Fix gcm-aes-s390 wrong scatter-gather list processing (LP: #1832623) - s390/crypto: fix gcm-aes-s390 selftest failures * System crashes on hot adding a core with drmgr command (4.15.0-48-generic) (LP: #1833716) - powerpc/numa: improve control of topology updates - powerpc/numa: document topology_updates_enabled, disable by default * Kernel modules generated incorrectly when system is localized to a non- English language (LP: #1828084) - scripts: override locale from environment when running recordmcount.pl * [UBUNTU] kernel: Fix wrong dispatching for control domain CPRBs (LP: #1832624) - s390/zcrypt: Fix wrong dispatching for control domain CPRBs * CVE-2019-11815 - net: rds: force to destroy connection if t_sock is NULL in rds_tcp_kill_sock(). * Sound device not detected after resume from hibernate (LP: #1826868) - drm/i915: Force 2*96 MHz cdclk on glk/cnl when audio power is enabled - drm/i915: Save the old CDCLK atomic state - drm/i915: Remove redundant store of logical CDCLK state - drm/i915: Skip modeset for cdclk changes if possible * Handle overflow in proc_get_long of sysctl (LP: #1833935) - sysctl: handle overflow in proc_get_long * Dell XPS 13 (9370) defaults to s2idle sleep/suspend instead of deep, NVMe drains lots of power under s2idle (LP: #1808957) - Revert "UBUNTU: SAUCE: pci/nvme: prevent WDC PC SN720 NVMe from entering D3 and being disabled" - Revert "UBUNTU: SAUCE: nvme: add quirk to not call disable function when suspending" - Revert "UBUNTU: SAUCE: pci: prevent Intel NVMe SSDPEKKF from entering D3" - Revert "SAUCE: nvme: add quirk to not call disable function when suspending" - Revert "SAUCE: pci: prevent sk hynix nvme from entering D3" - PCI: PM: Avoid possible suspend-to-idle issue - PCI: PM: Skip devices in D0 for suspend-to-idle - nvme-pci: Sync queues on reset - nvme: Export get and set features - nvme-pci: Use host managed power state for suspend * linux v4.15 ftbfs on a newer host kernel (e.g. hwe) (LP: #1823429) - selinux: use kernel linux/socket.h for genheaders and mdp * 32-bit x86 kernel 4.15.0-50 crash in vmalloc_sync_all (LP: #1830433) - x86/mm/pat: Disable preemption around __flush_tlb_all() - x86/mm: Drop usage of __flush_tlb_all() in kernel_physical_mapping_init() - x86/mm: Disable ioremap free page handling on x86-PAE - ioremap: Update pgtable free interfaces with addr - x86/mm: Add TLB purge to free pmd/pte page interfaces - x86/init: fix build with CONFIG_SWAP=n - x86/mm: provide pmdp_establish() helper - x86/mm: Use WRITE_ONCE() when setting PTEs * hinic: fix oops due to race in set_rx_mode (LP: #1832048) - hinic: fix a bug in
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
ubuntu@P8lpar4:~$ uname -a Linux P8lpar4 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:21:40 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux ubuntu@P8lpar4:~$ ubuntu@P8lpar4:~$ apt policy linux-image-generic linux-image-generic: Installed: 4.15.0.55.57 Candidate: 4.15.0.55.57 Version table: *** 4.15.0.55.57 500 500 http://ports.ubuntu.com/ubuntu-ports bionic-proposed/main ppc64el Packages 100 /var/lib/dpkg/status 4.15.0.54.56 500 500 http://ports.ubuntu.com/ubuntu-ports bionic-updates/main ppc64el Packages 500 http://ports.ubuntu.com/ubuntu-ports bionic-security/main ppc64el Packages 4.15.0.20.23 500 500 http://ports.ubuntu.com/ubuntu-ports bionic/main ppc64el Packages ubuntu@P8lpar4:~$ ubuntu@P8lpar4:~$ sudo su root@P8lpar4:/home/ubuntu# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# -- dmesg -- [ 476.574556] cpu 120 (hwid 120) Ready to die... [ 476.647003] cpu 121 (hwid 121) Ready to die... [ 476.710155] cpu 122 (hwid 122) Ready to die... [ 476.766678] cpu 123 (hwid 123) Ready to die... [ 476.829791] cpu 124 (hwid 124) Ready to die... [ 476.883594] cpu 125 (hwid 125) Ready to die... [ 476.933738] cpu 126 (hwid 126) Ready to die... [ 476.986045] cpu 127 (hwid 127) Ready to die... root@P8lpar4:/home/ubuntu# ** Tags removed: verification-needed-bionic ** Tags added: verification-done-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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: Fix Committed Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: ubuntu-power-systems Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Manoj Iyer (manjo) -- 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: Fix Committed Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
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! ** 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: Fix Committed Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: linux (Ubuntu Bionic) Status: New => 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: Fix Committed Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: New Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
The issue does not reproduce on Disco. root@P8lpar4:/home/ubuntu# uname -a Linux P8lpar4 5.0.0-19-generic #20-Ubuntu SMP Wed Jun 19 21:50:53 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux root@P8lpar4:/home/ubuntu# root@P8lpar4:/home/ubuntu# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# -- 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: ubuntu-power-systems Importance: High => Critical ** Changed in: linux (Ubuntu) Importance: High => Critical -- 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
SRU submitted: https://lists.ubuntu.com/archives/kernel- team/2019-June/101539.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Bug description: [Impact] On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. The patches identified to fix these issues disables changing the NUMA associations for CPUs and Memory at runtime by default. [Test] # drmgr -c cpu -r -q 1 # drmgr -c cpu -a -q 1 Test kernel available in ppa:ubuntu-power-triage/lp1833716 Please see comment #2 for before and after results with the patches applied. [Fix] 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default 2d4d9b308f8f powerpc/numa: improve control of topology updates [Regression Potential] The two patches relate to powerpc/numa and does not impact other architectures or platform code. Regression potential is low. [Other Information] == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908] [c001f5f1fa90] [c0179a70]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
== Bionic GA 4.15.0 kernel == ubuntu@P8lpar4:~$ sudo su root@P8lpar4:/home/ubuntu# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# drmgr -c cpu -a -q 1 [262984.440091] BUG: arch topology borken [262984.440110] the DIE domain not a subset of the NODE domain [262984.440114] BUG: arch topology borken [262984.440116] the DIE domain not a subset of the NODE domain [262984.440120] BUG: arch topology borken [262984.440122] the DIE domain not a subset of the NODE domain [262984.443241] Unable to handle kernel paging request for data at address 0x50dbee4a [262984.443261] Faulting instruction address: 0xc017982c [262984.443281] LE SMP NR_CPUS=2048 NUMA pSeries m iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables ync_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscs [262984.443323] CPU: 120 PID: 1467 Comm: kworker/120:2 Not tainted 4.15.0-52-generic #56-Ubuntu [262984.443331] Workqueue: events cpuset_hotplug_workfn [262984.443334] NIP: c017982c LR: c0179908 CTR: [262984.443341] MSR: 80009033 CR: 22824228 XER: 000 5 [262984.443349] GPR00: c0179908 c00fcec0b7b0 c16eb800 c00f7c4 [262984.443349] GPR04: 0001 0008 000 [262984.443349] GPR08: 0018 c00fe22f5808 000 1c600 [262984.443349] GPR16: 03c0 c1722494 c00fd249d800 000 1 [262984.443349] GPR20: c00ff7068580 0008 c11d8580 c17 [262984.443349] GPR24: e830 ec30 000 0102f 65d75 [262984.443389] LR [c0179908] destroy_sched_domain+0x38/0xc0 [262984.443392] Call Trace: [262984.443395] [c00fcec0b7b0] [ec30] 0xec30 (unreliable) [262984.443400] [c00fcec0b7f0] [c0179908] destroy_sched_domain+0x38/0xc0 [262984.443404] [c00fcec0b820] [c0179e10] cpu_attach_domain+0xf0/0x870 [262984.443408] [c00fcec0b960] [c017b7e4] build_sched_domains+0x1254/0x12 f0 [262984.443412] [c00fcec0ba90] [c017c9d0] partition_sched_domains+0x2d0/0 x410 [262984.443416] [c00fcec0bb20] [c0202b20] rebuild_sched_domains_locked+0x 60/0x80 [262984.443420] [c00fcec0bb50] [c0205e28] rebuild_sched_domains+0x38/0x60 [262984.443424] [c00fcec0bb80] [c0205f88] cpuset_hotplug_workfn+0x138/0xb 60 [262984.443429] [c00fcec0bc90] [c0138798] process_one_work+0x298/0x5a0 [262984.443433] [c00fcec0bd20] [c0138b38] worker_thread+0x98/0x630 [262984.443436] [c00fcec0bdc0] [c0141728] kthread+0x1a8/0x1b0 [262984.451901] [c00fcec0be30] [c000b65c] ret_from_kernel_thread+0x5c/0x8 0 [262984.451904] Instruction dump: [262984.451906] 7d908026 fbe1fff8 91810008 f8010010 f821ffc1 7c7d1b78 2e24 7c7f1b 78 [262984.451912] 4810 7fbee840 7fdff378 419e0074 4192002c 7c0004ac e95f 0010 [262984.451919] ---[ end trace b6da6a7114e365f9 ]--- [262984.454656] == After the patches are applied 4.15.0 == ubuntu@P8lpar4:~$ uname -a Linux P8lpar4 4.15.0-53-generic #57~lp1833716+build.1-Ubuntu SMP Fri Jun 21 15:18:40 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux ubuntu@P8lpar4:~$ ubuntu@P8lpar4:~$ sudo su root@P8lpar4:/home/ubuntu# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. CPU 121 root@P8lpar4:/home/ubuntu# Ubuntu 18.04.2 LTS P8lpar4 hvc0 P8lpar4 login: [ 25.687520] cloud-init[3439]: Cloud-init v. 19.1-1-gbaa47854-0ubunt
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Description changed: + [Impact] + On Bionic GA kernel (4.15.0), hot add of cpu with drmgr causes the kernel to crash. + + [Test] + # drmgr -c cpu -r -q 1 + # drmgr -c cpu -a -q 1 + + [Fix] + 558f86493df0 powerpc/numa: document topology_updates_enabled, disable by default + + 2d4d9b308f8f powerpc/numa: improve control of topology updates + + + [Regression Potential] + The two patches + + == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 - root@ubuntu:~# - root@ubuntu:~# - root@ubuntu:~# - root@ubuntu:~# - root@ubuntu:~# + root@ubuntu:~# + root@ubuntu:~# + root@ubuntu:~# + root@ubuntu:~# + root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 - [ 218.555789] CFAR: c0176920 SOFTE: 1 - [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 - [ 218.555789] GPR04: 0001 0008 0010 - [ 218.555789] GPR08: 0018 c001f7bfd408 - [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 - [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 - [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 - [ 218.555789] GPR24: e830 ec30 12af - [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f + [ 218.555789] CFAR: c0176920 SOFTE: 1 + [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 + [ 218.555789] GPR04: 0001 0008 0010 + [ 218.555789] GPR08: 0018 c001f7bfd408 + [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 + [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 + [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 + [ 218.555789] GPR24: e830 ec30 12af + [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: ubuntu-power-systems Status: New => In Progress ** Changed in: linux (Ubuntu) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Bug description: == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908] [c001f5f1fa90] [c0179a70] partition_sched_domains+0x2d0/0x410 [ 218.555916] [c001f5f1fb20] [c01ffb60] rebuild_sched_domains_locked+0x60/0x80 [ 218.555924] [c001f5f1fb50] [c0202e68] rebuild_sched_domains+0x38/0x60 [ 218.555932] [c001f5f1fb80] [c0202fc8] cpuset_hotplug_workfn+0x138/0xb60 [ 218.555941] [c001f5f1fc90] [c0135858] process_one_work+0x298/0x5a0 [ 218.555949] [c001f5f1fd20] [c0135bf8] worker_thread+0x98/0x630 [ 218.555956] [c001f5f1fdc0] [c013e7e8] kthread+0x1a8/0x1b0 [ 218.555964] [c001f5f1fe30] [c000b658] ret_from_kernel_thread+0x5c/0x84 [ 218.555971] Instruction dump: [ 218.555975] 7d908026
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Changed in: linux (Ubuntu) Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: ubuntu-power-systems Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: linux (Ubuntu) Assignee: Canonical Kernel Team (canonical-kernel-team) => Manoj Iyer (manjo) ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: ubuntu-power-systems Assignee: Canonical Kernel Team (canonical-kernel-team) => Manoj Iyer (manjo) -- 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908] [c001f5f1fa90] [c0179a70] partition_sched_domains+0x2d0/0x410 [ 218.555916] [c001f5f1fb20] [c01ffb60] rebuild_sched_domains_locked+0x60/0x80 [ 218.555924] [c001f5f1fb50] [c0202e68] rebuild_sched_domains+0x38/0x60 [ 218.555932] [c001f5f1fb80] [c0202fc8]
[Kernel-packages] [Bug 1833716] Re: System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
** Package changed: kernel-package (Ubuntu) => linux (Ubuntu) ** Also affects: ubuntu-power-systems Importance: Undecided Status: New ** Tags added: powervm ** Changed in: ubuntu-power-systems 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/1833716 Title: System crashes on hot adding a core with drmgr command (4.15.0-48-generic) Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: == Comment: #0 - Hari Krishna Bathini - 2019-05-07 13:18:35 == ---Problem Description--- On 4.15.0-48-generic kernel, hot adding a cpu with drmgr is crashing the kernel with below traces: --- root@ubuntu:~# drmgr -c cpu -r -q 1 Validating CPU DLPAR capability...yes. CPU 9 root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# root@ubuntu:~# drmgr -c cpu -a -q 1 Validating CPU DLPAR capability...yes. [ 218.555493] BUG: arch topology borken [ 218.03] the DIE domain not a subset of the NODE domain [ 218.12] BUG: arch topology borken [ 218.16] the DIE domain not a subset of the NODE domain [ 218.23] BUG: arch topology borken [ 218.28] the DIE domain not a subset of the NODE domain [ 218.35] BUG: arch topology borken [ 218.39] the DIE domain not a subset of the NODE domain [ 218.45] BUG: arch topology borken [ 218.50] the DIE domain not a subset of the NODE domain [ 218.56] BUG: arch topology borken [ 218.60] the DIE domain not a subset of the NODE domain [ 218.67] BUG: arch topology borken [ 218.71] the DIE domain not a subset of the NODE domain [ 218.77] BUG: arch topology borken [ 218.81] the DIE domain not a subset of the NODE domain [ 218.555672] Unable to handle kernel paging request for data at address 0x9332ae80f961139f [ 218.555679] Faulting instruction address: 0xc01768cc [ 218.555686] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.555691] LE SMP NR_CPUS=2048 NUMA pSeries [ 218.555699] Modules linked in: vmx_crypto crct10dif_vpmsum sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ibmvscsi ibmveth crc32c_vpmsum [ 218.555745] CPU: 8 PID: 276 Comm: kworker/8:1 Not tainted 4.15.0-48-generic #51-Ubuntu [ 218.555757] Workqueue: events cpuset_hotplug_workfn [ 218.555763] NIP: c01768cc LR: c01769a8 CTR: [ 218.555770] REGS: c001f5f1f530 TRAP: 0380 Not tainted (4.15.0-48-generic) [ 218.555776] MSR: 80009033 CR: 22824228 XER: 0004 [ 218.555789] CFAR: c0176920 SOFTE: 1 [ 218.555789] GPR00: c01769a8 c001f5f1f7b0 c16eb400 c001f7bfd200 [ 218.555789] GPR04: 0001 0008 0010 [ 218.555789] GPR08: 0018 c001f7bfd408 [ 218.555789] GPR12: 8000 c7a35800 0007 c001f549d900 [ 218.555789] GPR16: 0040 c1722494 c001f0f29400 0001 [ 218.555789] GPR20: c001ffb68580 0008 c11d8580 c171dd78 [ 218.555789] GPR24: e830 ec30 12af [ 218.555789] GPR28: 102f c001f7bfd200 9332ae80f961139f 9332ae80f961139f [ 218.555859] NIP [c01768cc] free_sched_groups.part.2+0x4c/0xf0 [ 218.555866] LR [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555871] Call Trace: [ 218.555875] [c001f5f1f7b0] [ec30] 0xec30 (unreliable) [ 218.555884] [c001f5f1f7f0] [c01769a8] destroy_sched_domain+0x38/0xc0 [ 218.555892] [c001f5f1f820] [c0176eb0] cpu_attach_domain+0xf0/0x870 [ 218.555900] [c001f5f1f960] [c0178884] build_sched_domains+0x1254/0x12f0 [ 218.555908] [c001f5f1fa90] [c0179a70] partition_sched_domains+0x2d0/0x410 [ 218.555916] [c001f5f1fb20] [c01ffb60] rebuild_sched_domains_locked+0x60/0x80 [ 218.555924] [c001f5f1fb50] [c0202e68] rebuild_sched_domains+0x38/0x60 [ 218.555932] [c001f5f1fb80] [c0202fc8] cpuset_hotplug_workfn+0x138/0xb60 [ 218.555941] [c001f5f1fc90] [c0135858] process_one_work+0x298/0x5a0 [ 218.555949] [c001f5f1fd20] [c0135bf8] worker_thread+0x98/0x630 [ 218.555956] [c001f5f1fdc0] [c013e7e8] kthread+0x1a8/0x1b0 [ 218.555964] [c001f5f1fe30] [c000b658]
