linux-kernel - Re: [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48] [mainline] [6.8.0-rc3]kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!

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Message-ID: <82a4d9a0-06c9-4152-9845-a261238b2833@linux.vnet.ibm.com>
Date: Thu, 8 Feb 2024 11:23:07 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.vnet.ibm.com>
To: iommu@...ts.linux.dev, jgg@...dia.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Cc: sbhat@...ux.ibm.com, robin.murphy@....com, will@...nel.org,
        sachinp@...ux.vnet.com, mputtash@...ux.vnet.com,
        abdhalee@...ux.vnet.ibm.com, tasmiya@...ux.vnet.ibm.com
Subject: Re: [revert commit 83b3836bf83f09beea5f592b126cfdd1bc921e48]
 [mainline] [6.8.0-rc3]kernel BUG at
 arch/powerpc/platforms/pseries/iommu.c:100!

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.