Hi folks,
During bakeathon, while running nfstest_dio test ran into the following panic.
[94215.223603] PGD 8000000115647067 P4D 8000000115647067 PUD 115649067 PMD 0 ^M
[94215.224449] Oops: 0000 [#1] SMP PTI^M
[94215.224888] CPU: 1 PID: 234186 Comm: kworker/u8:1 Not tainted
5.15.0-rc4+ #4^M
[94215.225798] Hardware name: Red Hat KVM/RHEL-AV, BIOS
1.13.0-2.module+el8.3.0+7353+9de0a3cc 04/01/2014^M
[94215.226981] Workqueue: nfsiod rpc_async_release [sunrpc]^M
[94215.227777] RIP: 0010:nfs_mark_request_commit+0x12/0x30 [nfs]^M
[94215.228583] Code: ff ff be 03 00 00 00 e8 ac 34 83 eb e9 29 ff ff
ff e8 22 bc d7 eb 66 90 0f 1f 44 00 00 48 85 f6 74 16 48 8b 42 10 48
8b 40 18 <48> 8b 40 18 48 85 c0 74 05 e9 70 fc 15 ec 48 89 d6 e9 68 ed
ff ff^M
[94215.230879] RSP: 0018:ffffa82f0159fe00 EFLAGS: 00010286^M
[94215.231522] RAX: 0000000000000000 RBX: ffff8f3393141880 RCX:
0000000000000000^M
[94215.232392] RDX: ffffa82f0159fe08 RSI: ffff8f3381252500 RDI:
ffff8f3393141880^M
[94215.233266] RBP: ffff8f33ac317c00 R08: 0000000000000000 R09:
ffff8f3487724cb0^M
[94215.234139] R10: 0000000000000008 R11: 0000000000000001 R12:
0000000000000001^M
[94215.235000] R13: ffff8f3485bccee0 R14: ffff8f33ac317c10 R15:
ffff8f33ac317cd8^M
[94215.235872] FS: 0000000000000000(0000) GS:ffff8f34fbc80000(0000)
knlGS:0000000000000000^M
[94215.236862] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033^M
[94215.237567] CR2: 0000000000000018 CR3: 0000000122120006 CR4:
0000000000770ee0^M
[94215.238441] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000^M
[94215.239331] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400^M
[94215.240204] PKRU: 55555554^M
[94215.240546] Call Trace:^M
[94215.240862] nfs_direct_write_completion+0x13b/0x250 [nfs]^M
[94215.241567] rpc_free_task+0x39/0x60 [sunrpc]^M
[94215.242174] rpc_async_release+0x29/0x40 [sunrpc]^M
[94215.242803] process_one_work+0x1ce/0x370^M
[94215.243336] worker_thread+0x30/0x380^M
[94215.243795] ? process_one_work+0x370/0x370^M
[94215.244310] kthread+0x11a/0x140^M
[94215.244746] ? set_kthread_struct+0x40/0x40^M
[94215.245278] ret_from_fork+0x22/0x30^M
[94215.248281] Modules linked in: nfs_layout_flexfiles nfsv3 nfs_acl
nfs_layout_nfsv41_files rpcsec_gss_krb5 nfsv4 dns_resolver nfs lockd
grace fscache netfs ib_core uinput xt_CHECKSUM xt_MASQUERADE
xt_conntrack ipt_REJECT nf_reject_ipv4 nft_compat nft_counter
nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
nf_tables nfnetlink bridge stp llc tun rfkill intel_rapl_msr
intel_rapl_common isst_if_common nfit libnvdimm kvm_intel kvm
snd_hda_codec_generic ledtrig_audio snd_hda_intel irqbypass
crct10dif_pclmul snd_intel_dspcfg crc32_pclmul snd_intel_sdw_acpi
snd_hda_codec iTCO_wdt ghash_clmulni_intel snd_hda_core
iTCO_vendor_support rapl snd_hwdep snd_seq snd_seq_device snd_pcm
joydev snd_timer pcspkr snd virtio_balloon i2c_i801 lpc_ich i2c_smbus
soundcore auth_rpcgss sunrpc ip_tables xfs libcrc32c sr_mod cdrom sg
qxl drm_ttm_helper ttm drm_kms_helper syscopyarea sysfillrect
sysimgblt fb_sys_fops drm ahci libahci libata crc32c_intel serio_raw
virtio_blk virtio_net virtio_console^M
[94215.248481] net_failover failover dm_mirror dm_region_hash dm_log
dm_mod fuse^M
[94215.260317] CR2: 0000000000000018^M
[94215.260761] ---[ end trace e77f9f8c7d405e9a ]---^M
[94215.261343] RIP: 0010:nfs_mark_request_commit+0x12/0x30 [nfs]^M
[94215.262079] Code: ff ff be 03 00 00 00 e8 ac 34 83 eb e9 29 ff ff
ff e8 22 bc d7 eb 66 90 0f 1f 44 00 00 48 85 f6 74 16 48 8b 42 10 48
8b 40 18 <48> 8b 40 18 48 85 c0 74 05 e9 70 fc 15 ec 48 89 d6 e9 68 ed
ff ff^M
[94215.264346] RSP: 0018:ffffa82f0159fe00 EFLAGS: 00010286^M
[94215.264991] RAX: 0000000000000000 RBX: ffff8f3393141880 RCX:
0000000000000000^M
[94215.265867] RDX: ffffa82f0159fe08 RSI: ffff8f3381252500 RDI:
ffff8f3393141880^M
[94215.266742] RBP: ffff8f33ac317c00 R08: 0000000000000000 R09:
ffff8f3487724cb0^M
[94215.267603] R10: 0000000000000008 R11: 0000000000000001 R12:
0000000000000001^M
[94215.268478] R13: ffff8f3485bccee0 R14: ffff8f33ac317c10 R15:
ffff8f33ac317cd8^M
[94215.269347] FS: 0000000000000000(0000) GS:ffff8f34fbc80000(0000)
knlGS:0000000000000000^M
[94215.270348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033^M
[94215.271058] CR2: 0000000000000018 CR3: 0000000122120006 CR4:
0000000000770ee0^M
[94215.271970] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000^M
[94215.272869] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400^M
[94215.273773] PKRU: 55555554^M
[94215.274132] Kernel panic - not syncing: Fatal exception^M
[94215.275074] Kernel Offset: 0x2b000000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)^M