* Re: [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! [not found] <798229fe-906e-441b-b7a3-44c475cf1e9f@linux.vnet.ibm.com> @ 2024-02-07 16:32 ` Jason Gunthorpe 2024-02-13 16:16 ` Shivaprasad G Bhat 0 siblings, 1 reply; 4+ messages in thread From: Jason Gunthorpe @ 2024-02-07 16:32 UTC (permalink / raw) To: Venkat Rao Bagalkote, Shivaprasad G Bhat, Ovidiu Panait Cc: iommu, sbhat, robin.murphy, will On Wed, Feb 07, 2024 at 09:53:30PM +0530, Venkat Rao Bagalkote wrote: > Greetings!!! > > [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] > [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! > > Reverting below commit id issue is not seen. > 83b3836bf83f09beea5f592b126cfdd1bc921e48 > iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA Well, you'll get probing failures if you revert it, so this seems like a false bisection.. Though no doubt it will land on one of the earlier iommu patches. > [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 > [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 > [ 7843.149129] Call Trace: > [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] iommu_reconfig_notifier+0x8 > c/0x200 (unreliable) > [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] notifier_call_chain+0xb8/0x > 19c > [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] blocking_notifier_call_chai > n+0x64/0x98 > [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] of_reconfig_notify+0x44/0xd > c > [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] of_detach_node+0x78/0xb0 > [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] ofdt_write.part.0+0x86c/0xb > b8 > [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] proc_reg_write+0xf4/0x150 > [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] vfs_write+0xf8/0x488 > [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] ksys_write+0x84/0x140 > [ 7843.149189] [c0000013aed5fe10] [c000000000033358] system_call_exception+0x138 > /0x330 > [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] system_call_vectored_common > +0x15c/0x2ec What is all this? Why is it reaching into the iommu space and messing it up from a notifier and then crashing when it is not in the state it expects? If a DT property is being removed shouldn't that be achieved by removing the device first and letting the normal iommu driver release flow run? I have no idea what this is doing, but it looks sketchy :\ Shivaprasad/Ovidiu can you look at this? It looks like some case with hot device removal? Thanks, Jason ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! 2024-02-07 16:32 ` [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! Jason Gunthorpe @ 2024-02-13 16:16 ` Shivaprasad G Bhat 0 siblings, 0 replies; 4+ messages in thread From: Shivaprasad G Bhat @ 2024-02-13 16:16 UTC (permalink / raw) To: Jason Gunthorpe, Venkat Rao Bagalkote, Ovidiu Panait Cc: iommu, robin.murphy, will On 2/7/24 22:02, Jason Gunthorpe wrote: > On Wed, Feb 07, 2024 at 09:53:30PM +0530, Venkat Rao Bagalkote wrote: >> Greetings!!! >> >> [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] >> [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! >> >> Reverting below commit id issue is not seen. >> 83b3836bf83f09beea5f592b126cfdd1bc921e48 >> iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA > Well, you'll get probing failures if you revert it, so this seems like > a false bisection.. Though no doubt it will land on one of the earlier > iommu patches. I did bisect the issue. The issue is with the commit a8ca9fc9134c ("powerpc/iommu: Do not do platform domain attach atctions after probe") >> [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 >> [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 >> [ 7843.149129] Call Trace: >> [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] iommu_reconfig_notifier+0x8 >> c/0x200 (unreliable) >> [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] notifier_call_chain+0xb8/0x >> 19c >> [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] blocking_notifier_call_chai >> n+0x64/0x98 >> [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] of_reconfig_notify+0x44/0xd >> c >> [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] of_detach_node+0x78/0xb0 >> [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] ofdt_write.part.0+0x86c/0xb >> b8 >> [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] proc_reg_write+0xf4/0x150 >> [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] vfs_write+0xf8/0x488 >> [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] ksys_write+0x84/0x140 >> [ 7843.149189] [c0000013aed5fe10] [c000000000033358] system_call_exception+0x138 >> /0x330 >> [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] system_call_vectored_common >> +0x15c/0x2ec > What is all this? > > Why is it reaching into the iommu space and messing it up from a > notifier and then crashing when it is not in the state it expects? > > If a DT property is being removed shouldn't that be achieved by > removing the device first and letting the normal iommu driver release > flow run? I see this is initiated from the drmgr tool from powerpc-utils. Its actually operating on the device tree first. > I have no idea what this is doing, but it looks sketchy :\ > > Shivaprasad/Ovidiu can you look at this? It looks like some case with > hot device removal? Yes. This is happening with hot unplug case. The issue here is a missing iommu_group_put() call in spapr_tce_platform_iommu_attach_dev() leading to the leak. I have posted the fix here - https://lore.kernel.org/all/170784021983.6249.10039296655906636112.stgit@linux.ibm.com/ Thanks, Shivaprasad > Thanks, > Jason ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <8d75ebd3-85c2-4a05-8eca-08f66f9411dc@linux.vnet.ibm.com>]
* [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! [not found] <8d75ebd3-85c2-4a05-8eca-08f66f9411dc@linux.vnet.ibm.com> @ 2024-02-08 2:56 ` Venkat Rao Bagalkote 2024-02-08 5:53 ` Venkat Rao Bagalkote 0 siblings, 1 reply; 4+ messages in thread From: Venkat Rao Bagalkote @ 2024-02-08 2:56 UTC (permalink / raw) To: iommu, jgg; +Cc: sbhat, robin.murphy, will Resending as earlier one bounced. Greetings!!! [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! By Reverting below commit id, issue is not seen. 83b3836bf83f09beea5f592b126cfdd1bc921e48 iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA --- Traces --- KernelBug: Kernel bug in state 'None': kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! [ 7843.148980] Oops: Exception in kernel mode, sig: 5 [#1] [ 7843.148984] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries [ 7843.148988] Modules linked in: nft_compat nf_tables libcrc32c nfnetlink bridge stp llc tls sit tunnel4 ip_tunnel nvram rpadlpar_io rpaphp xsk_diag rfkill binfmt_misc mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks ext4 mbcache jbd2 dm_service_time sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 sg ibmvfc scsi_transport_fc ibmveth mlx5_core mlxfw vmx_crypto psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse [last unloaded: tls] [ 7843.149041] CPU: 17 PID: 218444 Comm: drmgr Kdump: loaded Tainted: G I 6.8.0-rc3-autotest-g99bd3cb0d12e #1 [ 7843.149047] Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries [ 7843.149051] NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000 [ 7843.149055] REGS: c0000013aed5f840 TRAP: 0700 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e) [ 7843.149060] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 44002402 XER: 20040000 [ 7843.149069] CFAR: c000000000a0d170 IRQMASK: 0 [ 7843.149069] GPR00: c0000000000ff4cc c0000013aed5fae0 c000000001512700 c0000013aa362138 [ 7843.149069] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000119c8afd0 [ 7843.149069] GPR08: 0000000000000000 c000001284442b00 0000000000000001 0000000000001003 [ 7843.149069] GPR12: 0000000300000000 c0000018ffff2f00 0000000000000000 0000000000000000 [ 7843.149069] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 7843.149069] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 7843.149069] GPR24: c0000013aed5fc40 0000000000000002 0000000000000000 c000000002757d90 [ 7843.149069] GPR28: c0000000000ff440 c000000002757cb8 c00000183799c1a0 c0000013aa362b00 [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 [ 7843.149129] Call Trace: [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 (unreliable) [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] notifier_call_chain+0xb8/0x19c [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] blocking_notifier_call_chain+0x64/0x98 [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] of_reconfig_notify+0x44/0xdc [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] of_detach_node+0x78/0xb0 [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] ofdt_write.part.0+0x86c/0xbb8 [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] proc_reg_write+0xf4/0x150 [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] vfs_write+0xf8/0x488 [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] ksys_write+0x84/0x140 [ 7843.149189] [c0000013aed5fe10] [c000000000033358] system_call_exception+0x138/0x330 [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [ 7843.149203] --- interrupt: 3000 at 0x20000433acb4 [ 7843.149208] NIP: 000020000433acb4 LR: 0000000000000000 CTR: 0000000000000000 [ 7843.149212] REGS: c0000013aed5fe80 TRAP: 3000 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e) [ 7843.149217] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 42002408 XER: 00000000 [ 7843.149227] IRQMASK: 0 [ 7843.149227] GPR00: 0000000000000004 00007fffcde2d2c0 000000013a707f00 0000000000000006 [ 7843.149227] GPR04: 00007fffcde2d368 0000000000000020 0000000000000000 0000000000000001 [ 7843.149227] GPR08: 0000000000000020 0000000000000000 0000000000000000 0000000000000000 [ 7843.149227] GPR12: 0000000000000000 000020000403b1e0 000000013a6df668 0000000000000006 [ 7843.149227] GPR16: 0000000000000000 0000000000000002 0000000000000004 0000000000000005 [ 7843.149227] GPR20: 000000013a700018 000000013a6df360 000000013a6dcb20 000000013a6dd918 [ 7843.149227] GPR24: 000000013a6db178 00000001722028c8 00007fffcde2d7f8 00000001722028c8 [ 7843.149227] GPR28: 000000013a6dc340 00007fffcde2d368 0000000000000006 0000000000000020 [ 7843.149268] NIP [000020000433acb4] 0x20000433acb4 [ 7843.149271] LR [0000000000000000] 0x0 [ 7843.149274] --- interrupt: 3000 [ 7843.149277] Code: 4082016c 2c3f0000 41820060 ebff0028 2c3f0000 41820054 e87f0018 2c230000 41820014 4890dc75 60000000 e93f0018 <0b090000> e87f0020 2c230000 4182000c [ 7843.149292] ---[ end trace 0000000000000000 ]--- Regards, Venkat. > Greetings!!! > > > [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] > [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! > > > Reverting below commit id issue is not seen. > > 83b3836bf83f09beea5f592b126cfdd1bc921e48 > iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA > > > Traces: > > > KernelBug: Kernel bug in state 'None': kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! > [ 7843.148980] Oops: Exception in kernel mode, sig: 5 [#1] > [ 7843.148984] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries > [ 7843.148988] Modules linked in: nft_compat nf_tables libcrc32c nfnetlink bridge stp llc tls sit tunnel4 ip_tunnel nvram rpadlpar_io rpaphp xsk_diag rfkill binfmt_misc mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks ext4 mbcache jbd2 dm_service_time sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 sg ibmvfc scsi_transport_fc ibmveth mlx5_core mlxfw vmx_crypto psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse [last unloaded: tls] > [ 7843.149041] CPU: 17 PID: 218444 Comm: drmgr Kdump: loaded Tainted: G I 6.8.0-rc3-autotest-g99bd3cb0d12e #1 > [ 7843.149047] Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries > [ 7843.149051] NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000 > [ 7843.149055] REGS: c0000013aed5f840 TRAP: 0700 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e) > [ 7843.149060] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 44002402 XER: 20040000 > [ 7843.149069] CFAR: c000000000a0d170 IRQMASK: 0 > [ 7843.149069] GPR00: c0000000000ff4cc c0000013aed5fae0 c000000001512700 c0000013aa362138 > [ 7843.149069] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000119c8afd0 > [ 7843.149069] GPR08: 0000000000000000 c000001284442b00 0000000000000001 0000000000001003 > [ 7843.149069] GPR12: 0000000300000000 c0000018ffff2f00 0000000000000000 0000000000000000 > [ 7843.149069] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > [ 7843.149069] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > [ 7843.149069] GPR24: c0000013aed5fc40 0000000000000002 0000000000000000 c000000002757d90 > [ 7843.149069] GPR28: c0000000000ff440 c000000002757cb8 c00000183799c1a0 c0000013aa362b00 > [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 > [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 > [ 7843.149129] Call Trace: > [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 (unreliable) > [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] notifier_call_chain+0xb8/0x19c > [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] blocking_notifier_call_chain+0x64/0x98 > [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] of_reconfig_notify+0x44/0xdc > [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] of_detach_node+0x78/0xb0 > [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] ofdt_write.part.0+0x86c/0xbb8 > [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] proc_reg_write+0xf4/0x150 > [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] vfs_write+0xf8/0x488 > [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] ksys_write+0x84/0x140 > [ 7843.149189] [c0000013aed5fe10] [c000000000033358] system_call_exception+0x138/0x330 > [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec > [ 7843.149203] --- interrupt: 3000 at 0x20000433acb4 > [ 7843.149208] NIP: 000020000433acb4 LR: 0000000000000000 CTR: 0000000000000000 > [ 7843.149212] REGS: c0000013aed5fe80 TRAP: 3000 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e) > [ 7843.149217] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 42002408 XER: 00000000 > [ 7843.149227] IRQMASK: 0 > [ 7843.149227] GPR00: 0000000000000004 00007fffcde2d2c0 000000013a707f00 0000000000000006 > [ 7843.149227] GPR04: 00007fffcde2d368 0000000000000020 0000000000000000 0000000000000001 > [ 7843.149227] GPR08: 0000000000000020 0000000000000000 0000000000000000 0000000000000000 > [ 7843.149227] GPR12: 0000000000000000 000020000403b1e0 000000013a6df668 0000000000000006 > [ 7843.149227] GPR16: 0000000000000000 0000000000000002 0000000000000004 0000000000000005 > [ 7843.149227] GPR20: 000000013a700018 000000013a6df360 000000013a6dcb20 000000013a6dd918 > [ 7843.149227] GPR24: 000000013a6db178 00000001722028c8 00007fffcde2d7f8 00000001722028c8 > [ 7843.149227] GPR28: 000000013a6dc340 00007fffcde2d368 0000000000000006 0000000000000020 > [ 7843.149268] NIP [000020000433acb4] 0x20000433acb4 > [ 7843.149271] LR [0000000000000000] 0x0 > [ 7843.149274] --- interrupt: 3000 > [ 7843.149277] Code: 4082016c 2c3f0000 41820060 ebff0028 2c3f0000 41820054 e87f0018 2c230000 41820014 4890dc75 60000000 e93f0018 <0b090000> e87f0020 2c230000 4182000c > [ 7843.149292] ---[ end trace 0000000000000000 ]--- > > > Regards, > Venkat. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! 2024-02-08 2:56 ` Venkat Rao Bagalkote @ 2024-02-08 5:53 ` Venkat Rao Bagalkote 0 siblings, 0 replies; 4+ messages in thread From: Venkat Rao Bagalkote @ 2024-02-08 5:53 UTC (permalink / raw) To: iommu, jgg, linuxppc-dev, linux-kernel Cc: sbhat, robin.murphy, will, sachinp, mputtash, abdhalee, tasmiya Adding more people On 08/02/24 8:26 am, Venkat Rao Bagalkote wrote: > > Resending as earlier one bounced. > > Greetings!!! > > > [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] > [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! > > > By Reverting below commit id, issue is not seen. > > > 83b3836bf83f09beea5f592b126cfdd1bc921e48 > iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA > > > --- Traces --- > > KernelBug: Kernel bug in state 'None': kernel BUG at > arch/powerpc/platforms/pseries/iommu.c:100! > [ 7843.148980] Oops: Exception in kernel mode, sig: 5 [#1] > [ 7843.148984] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries > [ 7843.148988] Modules linked in: nft_compat nf_tables libcrc32c > nfnetlink bridge stp llc tls sit tunnel4 ip_tunnel nvram rpadlpar_io > rpaphp xsk_diag rfkill binfmt_misc mlx5_ib ib_uverbs ib_core > pseries_rng drm drm_panel_orientation_quirks ext4 mbcache jbd2 > dm_service_time sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft > crc64 sg ibmvfc scsi_transport_fc ibmveth mlx5_core mlxfw vmx_crypto > psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse [last > unloaded: tls] > [ 7843.149041] CPU: 17 PID: 218444 Comm: drmgr Kdump: loaded Tainted: > G I 6.8.0-rc3-autotest-g99bd3cb0d12e #1 > [ 7843.149047] Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 > 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries > [ 7843.149051] NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: > 0000000000000000 > [ 7843.149055] REGS: c0000013aed5f840 TRAP: 0700 Tainted: G > I (6.8.0-rc3-autotest-g99bd3cb0d12e) > [ 7843.149060] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: > 44002402 XER: 20040000 > [ 7843.149069] CFAR: c000000000a0d170 IRQMASK: 0 > [ 7843.149069] GPR00: c0000000000ff4cc c0000013aed5fae0 > c000000001512700 c0000013aa362138 > [ 7843.149069] GPR04: 0000000000000000 0000000000000000 > 0000000000000000 0000000119c8afd0 > [ 7843.149069] GPR08: 0000000000000000 c000001284442b00 > 0000000000000001 0000000000001003 > [ 7843.149069] GPR12: 0000000300000000 c0000018ffff2f00 > 0000000000000000 0000000000000000 > [ 7843.149069] GPR16: 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 > [ 7843.149069] GPR20: 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 > [ 7843.149069] GPR24: c0000013aed5fc40 0000000000000002 > 0000000000000000 c000000002757d90 > [ 7843.149069] GPR28: c0000000000ff440 c000000002757cb8 > c00000183799c1a0 c0000013aa362b00 > [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 > [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 > [ 7843.149129] Call Trace: > [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] > iommu_reconfig_notifier+0x8c/0x200 (unreliable) > [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] > notifier_call_chain+0xb8/0x19c > [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] > blocking_notifier_call_chain+0x64/0x98 > [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] > of_reconfig_notify+0x44/0xdc > [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] > of_detach_node+0x78/0xb0 > [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] > ofdt_write.part.0+0x86c/0xbb8 > [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] > proc_reg_write+0xf4/0x150 > [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] vfs_write+0xf8/0x488 > [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] > ksys_write+0x84/0x140 > [ 7843.149189] [c0000013aed5fe10] [c000000000033358] > system_call_exception+0x138/0x330 > [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] > system_call_vectored_common+0x15c/0x2ec > [ 7843.149203] --- interrupt: 3000 at 0x20000433acb4 > [ 7843.149208] NIP: 000020000433acb4 LR: 0000000000000000 CTR: > 0000000000000000 > [ 7843.149212] REGS: c0000013aed5fe80 TRAP: 3000 Tainted: G > I (6.8.0-rc3-autotest-g99bd3cb0d12e) > [ 7843.149217] MSR: 800000000280f033 > <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 42002408 XER: 00000000 > [ 7843.149227] IRQMASK: 0 > [ 7843.149227] GPR00: 0000000000000004 00007fffcde2d2c0 > 000000013a707f00 0000000000000006 > [ 7843.149227] GPR04: 00007fffcde2d368 0000000000000020 > 0000000000000000 0000000000000001 > [ 7843.149227] GPR08: 0000000000000020 0000000000000000 > 0000000000000000 0000000000000000 > [ 7843.149227] GPR12: 0000000000000000 000020000403b1e0 > 000000013a6df668 0000000000000006 > [ 7843.149227] GPR16: 0000000000000000 0000000000000002 > 0000000000000004 0000000000000005 > [ 7843.149227] GPR20: 000000013a700018 000000013a6df360 > 000000013a6dcb20 000000013a6dd918 > [ 7843.149227] GPR24: 000000013a6db178 00000001722028c8 > 00007fffcde2d7f8 00000001722028c8 > [ 7843.149227] GPR28: 000000013a6dc340 00007fffcde2d368 > 0000000000000006 0000000000000020 > [ 7843.149268] NIP [000020000433acb4] 0x20000433acb4 > [ 7843.149271] LR [0000000000000000] 0x0 > [ 7843.149274] --- interrupt: 3000 > [ 7843.149277] Code: 4082016c 2c3f0000 41820060 ebff0028 2c3f0000 > 41820054 e87f0018 2c230000 41820014 4890dc75 60000000 e93f0018 > <0b090000> e87f0020 2c230000 4182000c > [ 7843.149292] ---[ end trace 0000000000000000 ]--- > > > Regards, > > Venkat. > > >> Greetings!!! >> >> >> [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] >> [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! >> >> >> Reverting below commit id issue is not seen. >> >> 83b3836bf83f09beea5f592b126cfdd1bc921e48 >> iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA >> >> >> Traces: >> >> >> KernelBug: Kernel bug in state 'None': kernel BUG at >> arch/powerpc/platforms/pseries/iommu.c:100! >> [ 7843.148980] Oops: Exception in kernel mode, sig: 5 [#1] >> [ 7843.148984] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries >> [ 7843.148988] Modules linked in: nft_compat nf_tables libcrc32c >> nfnetlink bridge stp llc tls sit tunnel4 ip_tunnel nvram rpadlpar_io >> rpaphp xsk_diag rfkill binfmt_misc mlx5_ib ib_uverbs ib_core >> pseries_rng drm drm_panel_orientation_quirks ext4 mbcache jbd2 >> dm_service_time sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft >> crc64 sg ibmvfc scsi_transport_fc ibmveth mlx5_core mlxfw vmx_crypto >> psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse >> [last unloaded: tls] >> [ 7843.149041] CPU: 17 PID: 218444 Comm: drmgr Kdump: loaded Tainted: >> G I 6.8.0-rc3-autotest-g99bd3cb0d12e #1 >> [ 7843.149047] Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 >> 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries >> [ 7843.149051] NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: >> 0000000000000000 >> [ 7843.149055] REGS: c0000013aed5f840 TRAP: 0700 Tainted: >> G I (6.8.0-rc3-autotest-g99bd3cb0d12e) >> [ 7843.149060] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: >> 44002402 XER: 20040000 >> [ 7843.149069] CFAR: c000000000a0d170 IRQMASK: 0 >> [ 7843.149069] GPR00: c0000000000ff4cc c0000013aed5fae0 >> c000000001512700 c0000013aa362138 >> [ 7843.149069] GPR04: 0000000000000000 0000000000000000 >> 0000000000000000 0000000119c8afd0 >> [ 7843.149069] GPR08: 0000000000000000 c000001284442b00 >> 0000000000000001 0000000000001003 >> [ 7843.149069] GPR12: 0000000300000000 c0000018ffff2f00 >> 0000000000000000 0000000000000000 >> [ 7843.149069] GPR16: 0000000000000000 0000000000000000 >> 0000000000000000 0000000000000000 >> [ 7843.149069] GPR20: 0000000000000000 0000000000000000 >> 0000000000000000 0000000000000000 >> [ 7843.149069] GPR24: c0000013aed5fc40 0000000000000002 >> 0000000000000000 c000000002757d90 >> [ 7843.149069] GPR28: c0000000000ff440 c000000002757cb8 >> c00000183799c1a0 c0000013aa362b00 >> [ 7843.149112] NIP [c0000000000ff4d4] iommu_reconfig_notifier+0x94/0x200 >> [ 7843.149123] LR [c0000000000ff4cc] iommu_reconfig_notifier+0x8c/0x200 >> [ 7843.149129] Call Trace: >> [ 7843.149131] [c0000013aed5fae0] [c0000000000ff4cc] >> iommu_reconfig_notifier+0x8c/0x200 (unreliable) >> [ 7843.149138] [c0000013aed5fb10] [c0000000001a27b0] >> notifier_call_chain+0xb8/0x19c >> [ 7843.149146] [c0000013aed5fb70] [c0000000001a2a78] >> blocking_notifier_call_chain+0x64/0x98 >> [ 7843.149152] [c0000013aed5fbb0] [c000000000c4a898] >> of_reconfig_notify+0x44/0xdc >> [ 7843.149160] [c0000013aed5fc20] [c000000000c4add4] >> of_detach_node+0x78/0xb0 >> [ 7843.149165] [c0000013aed5fc70] [c0000000000f96a8] >> ofdt_write.part.0+0x86c/0xbb8 >> [ 7843.149171] [c0000013aed5fce0] [c00000000069b4bc] >> proc_reg_write+0xf4/0x150 >> [ 7843.149178] [c0000013aed5fd10] [c0000000005bfeb4] >> vfs_write+0xf8/0x488 >> [ 7843.149184] [c0000013aed5fdc0] [c0000000005c0570] >> ksys_write+0x84/0x140 >> [ 7843.149189] [c0000013aed5fe10] [c000000000033358] >> system_call_exception+0x138/0x330 >> [ 7843.149196] [c0000013aed5fe50] [c00000000000d05c] >> system_call_vectored_common+0x15c/0x2ec >> [ 7843.149203] --- interrupt: 3000 at 0x20000433acb4 >> [ 7843.149208] NIP: 000020000433acb4 LR: 0000000000000000 CTR: >> 0000000000000000 >> [ 7843.149212] REGS: c0000013aed5fe80 TRAP: 3000 Tainted: >> G I (6.8.0-rc3-autotest-g99bd3cb0d12e) >> [ 7843.149217] MSR: 800000000280f033 >> <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 42002408 XER: 00000000 >> [ 7843.149227] IRQMASK: 0 >> [ 7843.149227] GPR00: 0000000000000004 00007fffcde2d2c0 >> 000000013a707f00 0000000000000006 >> [ 7843.149227] GPR04: 00007fffcde2d368 0000000000000020 >> 0000000000000000 0000000000000001 >> [ 7843.149227] GPR08: 0000000000000020 0000000000000000 >> 0000000000000000 0000000000000000 >> [ 7843.149227] GPR12: 0000000000000000 000020000403b1e0 >> 000000013a6df668 0000000000000006 >> [ 7843.149227] GPR16: 0000000000000000 0000000000000002 >> 0000000000000004 0000000000000005 >> [ 7843.149227] GPR20: 000000013a700018 000000013a6df360 >> 000000013a6dcb20 000000013a6dd918 >> [ 7843.149227] GPR24: 000000013a6db178 00000001722028c8 >> 00007fffcde2d7f8 00000001722028c8 >> [ 7843.149227] GPR28: 000000013a6dc340 00007fffcde2d368 >> 0000000000000006 0000000000000020 >> [ 7843.149268] NIP [000020000433acb4] 0x20000433acb4 >> [ 7843.149271] LR [0000000000000000] 0x0 >> [ 7843.149274] --- interrupt: 3000 >> [ 7843.149277] Code: 4082016c 2c3f0000 41820060 ebff0028 2c3f0000 >> 41820054 e87f0018 2c230000 41820014 4890dc75 60000000 e93f0018 >> <0b090000> e87f0020 2c230000 4182000c >> [ 7843.149292] ---[ end trace 0000000000000000 ]--- >> >> >> Regards, >> Venkat. ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <798229fe-906e-441b-b7a3-44c475cf1e9f@linux.vnet.ibm.com>
2024-02-07 16:32 ` [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100! Jason Gunthorpe
2024-02-13 16:16 ` Shivaprasad G Bhat
[not found] <8d75ebd3-85c2-4a05-8eca-08f66f9411dc@linux.vnet.ibm.com>
2024-02-08 2:56 ` Venkat Rao Bagalkote
2024-02-08 5:53 ` Venkat Rao Bagalkote
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