Fw: Re: slab raid6-md125 start c000000d9371bf30 pointer offset 16 size 2544 ist_add corruption. prev->next should be next

Hello,

I have been facing a troubling issue with weird silent data loss on latest linux stable on Fedora ;

I initially thought it could be arch specific but at the end it does not seem like it. Hence why I initially sent my report to linux-ppc mailing list.

I also opened an issue at RHEL's Bugzilla : https://bugzilla.redhat.com/show_bug.cgi?id=2438830

I am continuously monitoring the issue and trying to gather more diagnostic data, I have been unable to find the cause as of now.

If you have any idea what's causing this, also don't hesitate to ask me for more info if you need it. I am surprised that it seems not many people are affected by it, at least I could not find more reports online about this same issue, weirdly.

Thanks alot
------- Forwarded Message -------
From: jfiusdq <[email protected]>
Date: On Tuesday, February 10th, 2026 at 4:57 PM
Subject: Re: slab raid6-md125 start c000000d9371bf30 pointer offset 16 size 2544 ist_add corruption. prev->next should be next
To: [email protected] <[email protected]>


> I have removed my out of tree module out of precaution and it still happened again, this time un-tainted kernel:
> 

> [24962.760298] sd 1:0:0:0: Power-on or device reset occurred[122456.581878]  slab raid6-md125 start c0000006487c31b0 pointer offset 16 size 2544
> [122456.581972] list_add corruption. prev->next should be next (c00020005a376ce0), but was c0000006487c31c0. (prev=c0000006487c31c0).
> [122456.582068] ------------[ cut here ]------------
> [122456.582097] kernel BUG at lib/list_debug.c:32!
> [122456.582130] Oops: Exception in kernel mode, sig: 5 [#1]
> [122456.582185] LE PAGE_SIZE=64K MMU=Radix  SMP NR_CPUS=2048 NUMA PowerNV
> [122456.582231] Modules linked in: vhost_net vhost vhost_iotlb tap tun nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp nf_conntrack_tftp bridge stp llc kvm_hv kvm rfkill xt_conntrack nft_compat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables dm_cache_smq dm_cache raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx sunrpc raid10 snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core joydev snd_hwdep snd_seq snd_seq_device at24 onboard_usb_dev snd_pcm snd_timer atlantic tg3 snd ofpart ipmi_powernv macsec soundcore powernv_flash ipmi_devintf mtd ipmi_msghandler vmx_crypto opal_prd rtc_opal i2c_opal fuse dm_multipath loop nfnetlink zram lz4hc_compress lz4_compress xfs dm_thin_pool dm_persistent_data dm_bio_prison dm_crypt raid1 nvme nvme_core uas usb_storage nvme_keyring mpt3sas nvme_auth hkdf ast raid_class scsi_transport_sas i2c_algo_bit scsi_dh_rdac
> [122456.582467]  scsi_dh_emc scsi_dh_alua i2c_dev aes_gcm_p10_crypto crypto_simd cryptd
> [122456.583119] CPU: 5 UID: 0 PID: 2697 Comm: dmcrypt_write/2 Not tainted 6.18.8-200.fc43.ppc64le #1 PREEMPT(voluntary)
> [122456.583216] Hardware name: T2P9D01 REV 1.00 POWER9 (raw) 0x4e1202 opal:skiboot-ecb1dc7 PowerNV
> [122456.583292] NIP:  c000000000e098fc LR: c000000000e098f8 CTR: 0000000000000000
> [122456.583370] REGS: c00000003c9877a0 TRAP: 0700   Not tainted  (6.18.8-200.fc43.ppc64le)
> [122456.583432] MSR:  900000000282b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 24004240  XER: 00000156
> [122456.583498] CFAR: c00000000034542c IRQMASK: 0
>                 GPR00: c000000000e098f8 c00000003c987a40 c0000000026ba900 0000000000000075
>                 GPR04: 00000000ffffbfff 0000000000000001 0000201ff71a0000 0000000000000001
>                 GPR08: 0000000000000027 0000000000000000 0000000000000000 c00000003c987890
>                 GPR12: c000201fff18ffa8 c000201fff7e8180 c000000000299c28 c000000005aba780
>                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001
>                 GPR24: 0000000000000000 c00000003c987c70 c000200060539800 c000200618eddb30
>                 GPR28: 0000000000000000 c000201485cbe738 c00000003bd42800 c000201485cbe6f0
> [122456.583968] NIP [c000000000e098fc] __list_add_valid_or_report+0xdc/0x140
> [122456.584045] LR [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140
> [122456.584093] Call Trace:
> [122456.584115] [c00000003c987a40] [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140 (unreliable)
> [122456.584189] [c00000003c987ab0] [c008000026e90ad4] release_stripe_plug+0x9c/0x150 [raid456]
> [122456.584258] [c00000003c987b00] [c008000026e959f4] make_stripe_request+0x32c/0x560 [raid456]
> [122456.584333] [c00000003c987bd0] [c008000026e95df8] raid5_make_request+0x1d0/0x610 [raid456]
> [122456.584418] [c00000003c987d10] [c000000001369a04] md_handle_request+0x1c4/0x400
> [122456.584484] [c00000003c987da0] [c000000000d04010] __submit_bio+0x230/0x3d0
> [122456.584560] [c00000003c987e40] [c000000000d04244] __submit_bio_noacct+0x94/0x250
> [122456.584635] [c00000003c987eb0] [c00000000138743c] dm_submit_bio_remap+0x4c/0x120
> [122456.584698] [c00000003c987ef0] [c00800001dc226a8] dmcrypt_write+0x1a0/0x200 [dm_crypt]
> [122456.584765] [c00000003c987f90] [c000000000299da8] kthread+0x188/0x1a0
> [122456.584818] [c00000003c987fe0] [c00000000000ded8] start_kernel_thread+0x14/0x18
> [122456.584879] Code: f8c10060 f8010080 4b883b35 60000000 3c62ff82 38639388 e8c10060 e9210068 e8a60000 7d244b78 4b53baf5 60000000 <0fe00000> 7c0802a6 7c852378 7c641b78
> [122456.585015] ---[ end trace 0000000000000000 ]---
> [122457.162074] pstore: backend (nvram) writing error (-1)
> 

> [122457.162141] note: dmcrypt_write/2[2697] exited with irqs disabled
> [122457.162214] ------------[ cut here ]------------
> [122457.162257] WARNING: CPU: 5 PID: 2697 at kernel/exit.c:903 do_exit+0x5c/0x5b0
> [122457.162314] Modules linked in: vhost_net vhost vhost_iotlb tap tun nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp nf_conntrack_tftp bridge stp llc kvm_hv kvm rfkill xt_conntrack nft_compat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables dm_cache_smq dm_cache raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx sunrpc raid10 snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core joydev snd_hwdep snd_seq snd_seq_device at24 onboard_usb_dev snd_pcm snd_timer atlantic tg3 snd ofpart ipmi_powernv macsec soundcore powernv_flash ipmi_devintf mtd ipmi_msghandler vmx_crypto opal_prd rtc_opal i2c_opal fuse dm_multipath loop nfnetlink zram lz4hc_compress lz4_compress xfs dm_thin_pool dm_persistent_data dm_bio_prison dm_crypt raid1 nvme nvme_core uas usb_storage nvme_keyring mpt3sas nvme_auth hkdf ast raid_class scsi_transport_sas i2c_algo_bit scsi_dh_rdac
> [122457.162459]  scsi_dh_emc scsi_dh_alua i2c_dev aes_gcm_p10_crypto crypto_simd cryptd
> [122457.163011] CPU: 5 UID: 0 PID: 2697 Comm: dmcrypt_write/2 Tainted: G      D             6.18.8-200.fc43.ppc64le #1 PREEMPT(voluntary)
> [122457.163123] Tainted: [D]=DIE
> [122457.163171] Hardware name: T2P9D01 REV 1.00 POWER9 (raw) 0x4e1202 opal:skiboot-ecb1dc7 PowerNV
> [122457.163240] NIP:  c00000000026035c LR: c000000000260950 CTR: 0000000000000000
> [122457.163322] REGS: c00000003c987330 TRAP: 0700   Tainted: G      D              (6.18.8-200.fc43.ppc64le)
> [122457.163406] MSR:  9000000002029033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE>  CR: 24004240  XER: 20040156
> [122457.163501] CFAR: c00000000026094c IRQMASK: 0
>                 GPR00: c000000000260950 c00000003c9875d0 c0000000026ba900 0000000000000005
>                 GPR04: 0000000000002710 0000000000000001 0000201ff71a0000 0000000000000001
>                 GPR08: 0000000000000005 0000000000000001 c00000003c987f18 0000000000004000
>                 GPR12: c000201fff18ffa8 c000201fff7e8180 0000000000000000 0000000000000000
>                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>                 GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>                 GPR28: 0000000000000005 0000000000000003 c000000003e3a900 c00000001be2a000
> [122457.163984] NIP [c00000000026035c] do_exit+0x5c/0x5b0
> [122457.164037] LR [c000000000260950] make_task_dead+0xa0/0x1d0
> [122457.164079] Call Trace:
> [122457.164126] [c00000003c9875d0] [c00000003c987600] 0xc00000003c987600 (unreliable)
> [122457.164216] [c00000003c987670] [c000000000260950] make_task_dead+0xa0/0x1d0
> [122457.164276] [c00000003c9876f0] [c00000000002a314] oops_end+0x164/0x1a0
> [122457.164336] [c00000003c987770] [c000000000009b2c] program_check_common_virt+0x3bc/0x3c0
> [122457.164399] ---- interrupt: 700 at __list_add_valid_or_report+0xdc/0x140
> [122457.164454] NIP:  c000000000e098fc LR: c000000000e098f8 CTR: 0000000000000000
> [122457.164509] REGS: c00000003c9877a0 TRAP: 0700   Tainted: G      D              (6.18.8-200.fc43.ppc64le)
> [122457.164575] MSR:  900000000282b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 24004240  XER: 00000156
> [122457.164654] CFAR: c00000000034542c IRQMASK: 0
>                 GPR00: c000000000e098f8 c00000003c987a40 c0000000026ba900 0000000000000075
>                 GPR04: 00000000ffffbfff 0000000000000001 0000201ff71a0000 0000000000000001
>                 GPR08: 0000000000000027 0000000000000000 0000000000000000 c00000003c987890
>                 GPR12: c000201fff18ffa8 c000201fff7e8180 c000000000299c28 c000000005aba780
>                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001
>                 GPR24: 0000000000000000 c00000003c987c70 c000200060539800 c000200618eddb30
>                 GPR28: 0000000000000000 c000201485cbe738 c00000003bd42800 c000201485cbe6f0
> [122457.165148] NIP [c000000000e098fc] __list_add_valid_or_report+0xdc/0x140
> [122457.165191] LR [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140
> [122457.165233] ---- interrupt: 700
> [122457.165273] [c00000003c987ab0] [c008000026e90ad4] release_stripe_plug+0x9c/0x150 [raid456]
> [122457.165358] [c00000003c987b00] [c008000026e959f4] make_stripe_request+0x32c/0x560 [raid456]
> [122457.165405] [c00000003c987bd0] [c008000026e95df8] raid5_make_request+0x1d0/0x610 [raid456]
> [122457.165481] [c00000003c987d10] [c000000001369a04] md_handle_request+0x1c4/0x400
> [122457.165545] [c00000003c987da0] [c000000000d04010] __submit_bio+0x230/0x3d0
> [122457.165593] [c00000003c987e40] [c000000000d04244] __submit_bio_noacct+0x94/0x250
> [122457.165648] [c00000003c987eb0] [c00000000138743c] dm_submit_bio_remap+0x4c/0x120
> [122457.165744] [c00000003c987ef0] [c00800001dc226a8] dmcrypt_write+0x1a0/0x200 [dm_crypt]
> [122457.165832] [c00000003c987f90] [c000000000299da8] kthread+0x188/0x1a0
> [122457.165889] [c00000003c987fe0] [c00000000000ded8] start_kernel_thread+0x14/0x18
> [122457.165960] Code: 91610008 f8010010 f821ff61 e92d0c78 f9210078 39200000 892d0932 552907fe 0b090000 e95f0c68 312affff 7d295110 <0b090000> ebbf0b90 ebdf0b88 7fa3eb78
> [122457.166065] ---[ end trace 0000000000000000 ]---
> On Monday, February 9th, 2026 at 12:38 AM, jfiusdq <[email protected]> wrote:
> 

> > Sorry for duplicate but it happened after a disk started failing during a check that was triggered on all my 3 RAID arrays and then after a good while this bug happened. That's basically it.
> > 

> > [154043.105837] md: check of RAID array md125[154049.432225] md: check of RAID array md126
> > [154055.718196] md: check of RAID array md127
> > [163101.001572] sd 1:0:0:0: [sda] tag#8069 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163101.001655] sd 1:0:0:0: [sda] tag#8069 CDB: Read(10) 28 00 1b 28 d1 80 00 02 80 00
> > [163101.001691] I/O error, dev sda, sector 455659904 op 0x0:(READ) flags 0x80700 phys_seg 5 prio class 2
> > [163101.412714] sd 1:0:0:0: Power-on or device reset occurred
> > [163101.698759] sd 1:0:0:0: [sda] tag#7728 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163101.698813] sd 1:0:0:0: [sda] tag#7728 CDB: Read(10) 28 00 74 70 6d 00 00 00 80 00
> > [163101.698843] I/O error, dev sda, sector 1953524992 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
> > [163102.162693] sd 1:0:0:0: Power-on or device reset occurred
> > [163102.447648] sd 1:0:0:0: [sda] Unaligned partial completion (resid=866300, sector_sz=512)
> > [163102.447723] sd 1:0:0:0: [sda] tag#8049 CDB: Read(10) 28 00 5e 21 d4 00 00 08 00 00
> > [163102.447751] sd 1:0:0:0: [sda] tag#8049 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163102.447789] sd 1:0:0:0: [sda] tag#8049 CDB: Read(10) 28 00 5e 21 d4 00 00 08 00 00
> > [163102.447855] I/O error, dev sda, sector 1579275264 op 0x0:(READ) flags 0x80700 phys_seg 8 prio class 2
> > [163102.912783] sd 1:0:0:0: Power-on or device reset occurred
> > [163103.662867] sd 1:0:0:0: Power-on or device reset occurred
> > [163104.413036] sd 1:0:0:0: Power-on or device reset occurred
> > [163105.163044] sd 1:0:0:0: Power-on or device reset occurred
> > [163105.913609] sd 1:0:0:0: Power-on or device reset occurred
> > [163106.663213] sd 1:0:0:0: Power-on or device reset occurred
> > [163107.289773] sd 1:0:0:0: Power-on or device reset occurred
> > [163107.932812] sd 1:0:0:0: Power-on or device reset occurred
> > [163108.913957] sd 1:0:0:0: Power-on or device reset occurred
> > [163109.664106] sd 1:0:0:0: Power-on or device reset occurred
> > [163110.414281] sd 1:0:0:0: Power-on or device reset occurred
> > [163111.164312] sd 1:0:0:0: Power-on or device reset occurred
> > [163111.913814] sd 1:0:0:0: Power-on or device reset occurred
> > [163112.663904] sd 1:0:0:0: Power-on or device reset occurred
> > [163113.414627] sd 1:0:0:0: Power-on or device reset occurred
> > [163113.699639] sd 1:0:0:0: [sda] Unaligned partial completion (resid=205820, sector_sz=512)
> > [163113.699771] sd 1:0:0:0: [sda] tag#7615 CDB: Read(10) 28 00 01 4d 84 00 00 04 00 00
> > [163113.699976] sd 1:0:0:0: [sda] tag#7615 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163113.700198] sd 1:0:0:0: [sda] tag#7615 CDB: Read(10) 28 00 01 4d 84 00 00 04 00 00
> > [163113.700329] I/O error, dev sda, sector 21857280 op 0x0:(READ) flags 0x80700 phys_seg 4 prio class 2
> > [163114.164085] sd 1:0:0:0: Power-on or device reset occurred
> > [163114.914167] sd 1:0:0:0: Power-on or device reset occurred
> > [163115.664261] sd 1:0:0:0: Power-on or device reset occurred
> > [163115.959965] sd 1:0:0:0: [sda] tag#8044 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163115.959963] sd 1:0:0:0: [sda] Unaligned partial completion (resid=308220, sector_sz=512)
> > [163115.959996] sd 1:0:0:0: [sda] tag#8016 CDB: Read(10) 28 00 00 58 a0 00 00 04 00 00
> > [163115.960041] sd 1:0:0:0: [sda] tag#8044 CDB: Read(10) 28 00 1b 48 fc 00 00 04 00 00
> > [163115.960081] sd 1:0:0:0: [sda] tag#8016 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163115.960109] I/O error, dev sda, sector 457767936 op 0x0:(READ) flags 0x80700 phys_seg 8 prio class 2
> > [163115.960155] sd 1:0:0:0: [sda] tag#8016 CDB: Read(10) 28 00 00 58 a0 00 00 04 00 00
> > [163115.960402] I/O error, dev sda, sector 5808128 op 0x0:(READ) flags 0x80700 phys_seg 4 prio class 2
> > [163116.414438] sd 1:0:0:0: Power-on or device reset occurred
> > [163116.706739] sd 1:0:0:0: [sda] tag#8103 FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK cmd_age=0s
> > [163116.706804] sd 1:0:0:0: [sda] tag#8103 CDB: Read(10) 28 00 0d 86 3c 00 00 08 00 00
> > [163116.706853] I/O error, dev sda, sector 226900992 op 0x0:(READ) flags 0x80700 phys_seg 12 prio class 2
> > [163117.109789] sd 1:0:0:0: Power-on or device reset occurred
> > [163117.914577] sd 1:0:0:0: Power-on or device reset occurred
> > [163497.189569] md: md126: check done.
> > [163829.231426] md: md127: check done.
> > [185096.100388] md: md125: check done.
> > 

> > 

> > and just after that, just the kernel logs you saw in my previous mail, nothing in between.
> > On Monday, February 9th, 2026 at 12:19 AM, jfiusdq <[email protected]> wrote:
> > 

> > > Hello,
> > > 

> > > 

> > > Today I was met with the following kernel log on IBM POWER9, abit worrying because of it concerning RAID6:
> > > 

> > > 

> > > [240888.555387]  slab raid6-md125 start c000000d9371bf30 pointer offset 16 size 2544
> > > [240888.555464] list_add corruption. prev->next should be next (c00000002a3fc3e0), but was c000000d9371bf40. (prev=c000000d9371bf40).
> > > [240888.555582] ------------[ cut here ]------------
> > > [240888.555615] kernel BUG at lib/list_debug.c:32!
> > > [240888.555650] Oops: Exception in kernel mode, sig: 5 [#1]
> > > [240888.555703] LE PAGE_SIZE=64K MMU=Radix  SMP NR_CPUS=2048 NUMA PowerNV
> > > [240888.555755] Modules linked in: vendor_reset(OE) vfio_pci vfio_pci_core vfio_iommu_spapr_tce vfio iommufd vhost_net vhost vhost_iotlb tap tun nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp nf_conntrack_tftp bridge stp llc kvm_hv kvm rfkill xt_conntrack nft_compat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables dm_cache_smq dm_cache raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx sunrpc raid10 snd_hda_intel at24 joydev snd_intel_dspcfg snd_hda_codec snd_hda_core onboard_usb_dev snd_hwdep snd_seq snd_seq_device snd_pcm ofpart tg3 powernv_flash snd_timer atlantic vmx_crypto ipmi_powernv snd ipmi_devintf mtd ipmi_msghandler macsec rtc_opal opal_prd soundcore i2c_opal fuse dm_multipath loop nfnetlink zram lz4hc_compress lz4_compress xfs dm_thin_pool dm_persistent_data dm_bio_prison dm_crypt raid1 nvme mpt3sas nvme_core uas usb_storage ast nvme_keyring
> > > [240888.555962]  nvme_auth hkdf raid_class i2c_algo_bit scsi_transport_sas scsi_dh_rdac scsi_dh_emc scsi_dh_alua i2c_dev aes_gcm_p10_crypto crypto_simd cryptd
> > > [240888.556531] CPU: 33 UID: 0 PID: 2851 Comm: dmcrypt_write/2 Tainted: G           OE       6.18.8-200.fc43.ppc64le #1 PREEMPT(voluntary)
> > > [240888.556608] Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
> > > [240888.556650] Hardware name: T2P9D01 REV 1.00 POWER9 (raw) 0x4e1202 opal:skiboot-ecb1dc7 PowerNV
> > > [240888.556721] NIP:  c000000000e098fc LR: c000000000e098f8 CTR: 0000000000000000
> > > [240888.556766] REGS: c0000000295e77a0 TRAP: 0700   Tainted: G           OE        (6.18.8-200.fc43.ppc64le)
> > > [240888.556822] MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 24004280  XER: 00000000
> > > [240888.556904] CFAR: c00000000034542c IRQMASK: 0
> > >                 GPR00: c000000000e098f8 c0000000295e7a40 c0000000026ba900 0000000000000075
> > >                 GPR04: 00000000ffffbfff 0000000000000001 0000001ffc2d0000 0000000000000001
> > >                 GPR08: 0000000000000027 0000000000000000 0000000000000000 c0000000295e7890
> > >                 GPR12: c000201fff18ffa8 c000001ffffde600 c000000000299c28 c0002000113fdb40
> > >                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001
> > >                 GPR24: 0000000000000000 c0000000295e7c70 c00000002bbce800 c000001126d57830
> > >                 GPR28: 0000000000000000 c000201d2995b588 c00020005f464000 c000201d2995b540
> > > [240888.557339] NIP [c000000000e098fc] __list_add_valid_or_report+0xdc/0x140
> > > [240888.557405] LR [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140
> > > [240888.557463] Call Trace:
> > > [240888.557484] [c0000000295e7a40] [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140 (unreliable)
> > > [240888.557541] [c0000000295e7ab0] [c0080000238f0ad4] release_stripe_plug+0x9c/0x150 [raid456]
> > > [240888.557607] [c0000000295e7b00] [c0080000238f59f4] make_stripe_request+0x32c/0x560 [raid456]
> > > [240888.557678] [c0000000295e7bd0] [c0080000238f5df8] raid5_make_request+0x1d0/0x610 [raid456]
> > > [240888.557765] [c0000000295e7d10] [c000000001369a04] md_handle_request+0x1c4/0x400
> > > [240888.557850] [c0000000295e7da0] [c000000000d04010] __submit_bio+0x230/0x3d0
> > > [240888.557927] [c0000000295e7e40] [c000000000d04244] __submit_bio_noacct+0x94/0x250
> > > [240888.557998] [c0000000295e7eb0] [c00000000138743c] dm_submit_bio_remap+0x4c/0x120
> > > [240888.558070] [c0000000295e7ef0] [c00800001bce26a8] dmcrypt_write+0x1a0/0x200 [dm_crypt]
> > > [240888.558131] [c0000000295e7f90] [c000000000299da8] kthread+0x188/0x1a0
> > > [240888.558196] [c0000000295e7fe0] [c00000000000ded8] start_kernel_thread+0x14/0x18
> > > [240888.558257] Code: f8c10060 f8010080 4b883b35 60000000 3c62ff82 38639388 e8c10060 e9210068 e8a60000 7d244b78 4b53baf5 60000000 <0fe00000> 7c0802a6 7c852378 7c641b78
> > > [240888.558363] ---[ end trace 0000000000000000 ]---
> > > [240889.114586] pstore: backend (nvram) writing error (-1)
> > > 

> > > [240889.114636] note: dmcrypt_write/2[2851] exited with irqs disabled
> > > [240889.114756] ------------[ cut here ]------------
> > > [240889.114785] WARNING: CPU: 33 PID: 2851 at kernel/exit.c:903 do_exit+0x5c/0x5b0
> > > [240889.114837] Modules linked in: vendor_reset(OE) vfio_pci vfio_pci_core vfio_iommu_spapr_tce vfio iommufd vhost_net vhost vhost_iotlb tap tun nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp nf_conntrack_tftp bridge stp llc kvm_hv kvm rfkill xt_conntrack nft_compat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables dm_cache_smq dm_cache raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx sunrpc raid10 snd_hda_intel at24 joydev snd_intel_dspcfg snd_hda_codec snd_hda_core onboard_usb_dev snd_hwdep snd_seq snd_seq_device snd_pcm ofpart tg3 powernv_flash snd_timer atlantic vmx_crypto ipmi_powernv snd ipmi_devintf mtd ipmi_msghandler macsec rtc_opal opal_prd soundcore i2c_opal fuse dm_multipath loop nfnetlink zram lz4hc_compress lz4_compress xfs dm_thin_pool dm_persistent_data dm_bio_prison dm_crypt raid1 nvme mpt3sas nvme_core uas usb_storage ast nvme_keyring
> > > [240889.114993]  nvme_auth hkdf raid_class i2c_algo_bit scsi_transport_sas scsi_dh_rdac scsi_dh_emc scsi_dh_alua i2c_dev aes_gcm_p10_crypto crypto_simd cryptd
> > > [240889.115528] CPU: 33 UID: 0 PID: 2851 Comm: dmcrypt_write/2 Tainted: G      D    OE       6.18.8-200.fc43.ppc64le #1 PREEMPT(voluntary)
> > > [240889.115641] Tainted: [D]=DIE, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
> > > [240889.115678] Hardware name: T2P9D01 REV 1.00 POWER9 (raw) 0x4e1202 opal:skiboot-ecb1dc7 PowerNV
> > > [240889.115771] NIP:  c00000000026035c LR: c000000000260950 CTR: 0000000000000000
> > > [240889.115828] REGS: c0000000295e7330 TRAP: 0700   Tainted: G      D    OE        (6.18.8-200.fc43.ppc64le)
> > > [240889.115875] MSR:  9000000002029033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE>  CR: 24004280  XER: 20040000
> > > [240889.115936] CFAR: c00000000026094c IRQMASK: 0
> > >                 GPR00: c000000000260950 c0000000295e75d0 c0000000026ba900 0000000000000005
> > >                 GPR04: 0000000000002710 0000000000000001 0000001ffc2d0000 0000000000000001
> > >                 GPR08: 0000000000000005 0000000000000001 c0000000295e7f18 0000000000004000
> > >                 GPR12: c000201fff18ffa8 c000001ffffde600 0000000000000000 0000000000000000
> > >                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >                 GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >                 GPR28: 0000000000000005 0000000000000003 c000000003e3a900 c00000004555e800
> > > [240889.116379] NIP [c00000000026035c] do_exit+0x5c/0x5b0
> > > [240889.116407] LR [c000000000260950] make_task_dead+0xa0/0x1d0
> > > [240889.116427] Call Trace:
> > > [240889.116473] [c0000000295e75d0] [c0000000295e7600] 0xc0000000295e7600 (unreliable)
> > > [240889.116549] [c0000000295e7670] [c000000000260950] make_task_dead+0xa0/0x1d0
> > > [240889.116621] [c0000000295e76f0] [c00000000002a314] oops_end+0x164/0x1a0
> > > [240889.116689] [c0000000295e7770] [c000000000009b2c] program_check_common_virt+0x3bc/0x3c0
> > > [240889.116749] ---- interrupt: 700 at __list_add_valid_or_report+0xdc/0x140
> > > [240889.116799] NIP:  c000000000e098fc LR: c000000000e098f8 CTR: 0000000000000000
> > > [240889.116838] REGS: c0000000295e77a0 TRAP: 0700   Tainted: G      D    OE        (6.18.8-200.fc43.ppc64le)
> > > [240889.116905] MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 24004280  XER: 00000000
> > > [240889.116967] CFAR: c00000000034542c IRQMASK: 0
> > >                 GPR00: c000000000e098f8 c0000000295e7a40 c0000000026ba900 0000000000000075
> > >                 GPR04: 00000000ffffbfff 0000000000000001 0000001ffc2d0000 0000000000000001
> > >                 GPR08: 0000000000000027 0000000000000000 0000000000000000 c0000000295e7890
> > >                 GPR12: c000201fff18ffa8 c000001ffffde600 c000000000299c28 c0002000113fdb40
> > >                 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >                 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001
> > >                 GPR24: 0000000000000000 c0000000295e7c70 c00000002bbce800 c000001126d57830
> > >                 GPR28: 0000000000000000 c000201d2995b588 c00020005f464000 c000201d2995b540
> > > [240889.117343] NIP [c000000000e098fc] __list_add_valid_or_report+0xdc/0x140
> > > [240889.117400] LR [c000000000e098f8] __list_add_valid_or_report+0xd8/0x140
> > > [240889.117454] ---- interrupt: 700
> > > [240889.117487] [c0000000295e7ab0] [c0080000238f0ad4] release_stripe_plug+0x9c/0x150 [raid456]
> > > [240889.117544] [c0000000295e7b00] [c0080000238f59f4] make_stripe_request+0x32c/0x560 [raid456]
> > > [240889.117605] [c0000000295e7bd0] [c0080000238f5df8] raid5_make_request+0x1d0/0x610 [raid456]
> > > [240889.117678] [c0000000295e7d10] [c000000001369a04] md_handle_request+0x1c4/0x400
> > > [240889.117738] [c0000000295e7da0] [c000000000d04010] __submit_bio+0x230/0x3d0
> > > [240889.117792] [c0000000295e7e40] [c000000000d04244] __submit_bio_noacct+0x94/0x250
> > > [240889.117859] [c0000000295e7eb0] [c00000000138743c] dm_submit_bio_remap+0x4c/0x120
> > > [240889.117956] [c0000000295e7ef0] [c00800001bce26a8] dmcrypt_write+0x1a0/0x200 [dm_crypt]
> > > [240889.118017] [c0000000295e7f90] [c000000000299da8] kthread+0x188/0x1a0
> > > [240889.118084] [c0000000295e7fe0] [c00000000000ded8] start_kernel_thread+0x14/0x18
> > > [240889.118131] Code: 91610008 f8010010 f821ff61 e92d0c78 f9210078 39200000 892d0932 552907fe 0b090000 e95f0c68 312affff 7d295110 <0b090000> ebbf0b90 ebdf0b88 7fa3eb78
> > > [240889.118320] ---[ end trace 0000000000000000 ]---
> > > 

> > > 

> > > If that's any useful to reveal a bug, about the tainting module, it's a port of https://github.com/gnif/vendor-reset to ppc to reset some older graphics cards, nothing that should affect what the log is talking about, furthermore its been here for quite a long time without any errors.
> > > 

> > > 

> > > Thanks

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