[bug report] Oops: general protection fault observed during blktests nvme/fc nvme/057 nvme/058

Tue Apr 7 01:35:06 PDT 2026

Hi
I reproduced this Oops issue on the latest linux-block/for-next and
v7.0-rc6, please help check it and let me know if you need any
info/test for it, thanks.

reproducer:
blktests nvme/fc nvme/057 nvme/058

console log:
[24778.056260] run blktests nvme/057 at 2026-04-07 03:53:44
[24784.172575] nvme nvme7: Found shared namespace 1, but multipathing
not supported.
[24785.576049] nvme nvme8: Found shared namespace 1, but multipathing
not supported.
[24785.649339] nvme_log_error: 72 callbacks suppressed
[24785.649351] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.662411] blk_print_req_error: 72 callbacks suppressed
[24785.662417] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.676236] buffer_io_error: 67 callbacks suppressed
[24785.676241] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.689844] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.698047] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.706525] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.716133] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.724182] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.732652] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.741196] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.749242] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.757706] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.766193] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.774462] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.782947] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.791432] nvme8n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24785.799769] I/O error, dev nvme8n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24785.808239] Buffer I/O error on dev nvme8n1, logical block 0, async page read
[24785.907390] nvme8n1: I/O Cmd(0x2) @ LBA 2097024, 8 blocks, I/O
Error (sct 0x3 / sc 0x2) MORE
[24785.915982] I/O error, dev nvme8n1, sector 2097024 op 0x0:(READ)
flags 0x80700 phys_seg 1 prio class 2
[24785.926864] nvme8n1: I/O Cmd(0x2) @ LBA 2097024, 8 blocks, I/O
Error (sct 0x3 / sc 0x2) MORE
[24785.935445] I/O error, dev nvme8n1, sector 2097024 op 0x0:(READ)
flags 0x0 phys_seg 1 prio class 2
[24785.944442] Buffer I/O error on dev nvme8n1, logical block 262128,
async page read
[24787.014714] nvme nvme9: Found shared namespace 1, but multipathing
not supported.
[24787.109346] nvme9n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24787.117401] I/O error, dev nvme9n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24787.125928] Buffer I/O error on dev nvme9n1, logical block 0, async page read
[24787.134760] nvme9n1: I/O Cmd(0x2) @ LBA 0, 8 blocks, I/O Error (sct
0x3 / sc 0x2) MORE
[24787.142808] I/O error, dev nvme9n1, sector 0 op 0x0:(READ) flags
0x0 phys_seg 1 prio class 2
[24787.151340] Buffer I/O error on dev nvme9n1, logical block 0, async page read
[24787.159882] Buffer I/O error on dev nvme9n1, logical block 0, async page read
[24793.253267] nvme nvme6: NVME-FC{0}: transport association event:
transport detected io error
[24793.257123] nvme_log_error: 6 callbacks suppressed
[24793.257128] nvme6n1: I/O Cmd(0x1) @ LBA 543904, 8 blocks, I/O Error
(sct 0x3 / sc 0x70)
[24793.257139] blk_print_req_error: 6 callbacks suppressed
[24793.257143] recoverable transport error, dev nvme6n1, sector 543904
op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.257673] nvme6n1: I/O Cmd(0x1) @ LBA 411480, 8 blocks, I/O Error
(sct 0x3 / sc 0x70)
[24793.257682] recoverable transport error, dev nvme6n1, sector 411480
op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.258044] nvme6n1: I/O Cmd(0x1) @ LBA 710688, 8 blocks, I/O Error
(sct 0x3 / sc 0x70)
[24793.258053] recoverable transport error, dev nvme6n1, sector 710688
op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.261036] nvme6n1: I/O Cmd(0x1) @ LBA 397960, 8 blocks, I/O Error
(sct 0x3 / sc 0x70)
[24793.261047] recoverable transport error, dev nvme6n1, sector 397960
op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.261329] nvme6n1: I/O Cmd(0x1) @ LBA 1591072, 8 blocks, I/O
Error (sct 0x3 / sc 0x70)
[24793.261338] recoverable transport error, dev nvme6n1, sector
1591072 op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.261931] nvme nvme6: NVME-FC{0}: resetting controller
[24793.262852] nvme6n1: I/O Cmd(0x1) @ LBA 222192, 8 blocks, I/O Error
(sct 0x3 / sc 0x70)
[24793.262864] recoverable transport error, dev nvme6n1, sector 222192
op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.274891] nvme6n1: I/O Cmd(0x1) @ LBA 1214144, 8 blocks, I/O
Error (sct 0x3 / sc 0x70)
[24793.399106] recoverable transport error, dev nvme6n1, sector
1214144 op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2
[24793.455979] nvme6n1: I/O Cmd(0x1) @ LBA 560192, 8 blocks, I/O Error
(sct 0x3 / sc 0x2) MORE
[24793.456341] nvme6n1: I/O Cmd(0x1) @ LBA 1352744, 8 blocks, I/O
Error (sct 0x3 / sc 0x2) MORE
[24793.456364] nvme6n1: I/O Cmd(0x1) @ LBA 1353024, 8 blocks, I/O
Error (sct 0x3 / sc 0x2) MORE
[24793.456379] I/O error, dev nvme6n1, sector 1353024 op 0x1:(WRITE)
flags 0x8800 phys_seg 1 prio class 2
[24793.456988] I/O error, dev nvme6n1, sector 1913184 op 0x1:(WRITE)
flags 0x8800 phys_seg 1 prio class 2
[24793.457182] I/O error, dev nvme6n1, sector 864944 op 0x1:(WRITE)
flags 0x8800 phys_seg 1 prio class 2
[24793.544368] buffer_io_error: 4 callbacks suppressed
[24793.544379] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.560206] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.569388] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.578024] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.586584] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.595761] Buffer I/O error on dev nvme6n1, logical block 0, async page read
[24793.659221] Buffer I/O error on dev nvme6n1, logical block 262128,
async page read
[24814.210989] Oops: general protection fault, probably for
non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI
[24814.222213] KASAN: null-ptr-deref in range
[0x0000000000000028-0x000000000000002f]
[24814.229789] CPU: 10 UID: 0 PID: 1547 Comm: kworker/u66:2 Not
tainted 7.0.0-rc6+ #1 PREEMPT(full)
[24814.238670] Hardware name: Dell Inc. PowerEdge R6515/07PXPY, BIOS
2.21.1 09/24/2025
[24814.246331] Workqueue: nvmet-wq fcloop_tgt_fcprqst_done_work [nvme_fcloop]
[24814.253219] RIP: 0010:kasan_byte_accessible+0x15/0x30
[24814.258280] Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 90 0f 1f 40 d6 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03
48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 0e d5 04 02 66 66 2e 0f 1f 84 00
00 00
[24814.277034] RSP: 0018:ffffc9000bc9fb68 EFLAGS: 00010286
[24814.282268] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[24814.289400] RDX: 0000000000000000 RSI: ffffffff89610547 RDI: dffffc0000000005
[24814.296532] RBP: 0000000000000028 R08: 0000000000000001 R09: 0000000000000000
[24814.303666] R10: ffffffff8b7bd367 R11: 0000000000000001 R12: ffffffff89610547
[24814.310799] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
[24814.317939] FS:  0000000000000000(0000) GS:ffff8887d23ca000(0000)
knlGS:0000000000000000
[24814.326033] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[24814.331779] CR2: 0000555867b457e8 CR3: 000000020526f000 CR4: 0000000000350ef0
[24814.338911] Call Trace:
[24814.341365]  <TASK>
[24814.343469]  __kasan_check_byte+0x13/0x50
[24814.347493]  lock_acquire.part.0+0x36/0x260
[24814.351687]  ? fcloop_tgt_fcprqst_done_work+0x104/0x200 [nvme_fcloop]
[24814.358135]  ? srso_return_thunk+0x5/0x5f
[24814.362153]  ? rcu_is_watching+0x15/0xb0
[24814.366082]  ? srso_return_thunk+0x5/0x5f
[24814.370102]  ? lock_acquire+0x159/0x180
[24814.373955]  _raw_spin_lock+0x37/0x80
[24814.377626]  ? fcloop_tgt_fcprqst_done_work+0x104/0x200 [nvme_fcloop]
[24814.384073]  fcloop_tgt_fcprqst_done_work+0x104/0x200 [nvme_fcloop]
[24814.390351]  process_one_work+0xd98/0x1390
[24814.394465]  ? __pfx_process_one_work+0x10/0x10
[24814.399017]  ? srso_return_thunk+0x5/0x5f
[24814.403039]  worker_thread+0x60b/0x1000
[24814.406895]  ? __pfx_worker_thread+0x10/0x10
[24814.411171]  kthread+0x36c/0x470
[24814.414414]  ? _raw_spin_unlock_irq+0x28/0x50
[24814.418780]  ? __pfx_kthread+0x10/0x10
[24814.422546]  ret_from_fork+0x5dc/0x8e0
[24814.426306]  ? __pfx_ret_from_fork+0x10/0x10
[24814.430588]  ? srso_return_thunk+0x5/0x5f
[24814.434605]  ? __switch_to+0x524/0xf50
[24814.438367]  ? __switch_to_asm+0x39/0x70
[24814.442302]  ? __pfx_kthread+0x10/0x10
[24814.446065]  ret_from_fork_asm+0x1a/0x30
[24814.450012]  </TASK>
[24814.452206] Modules linked in: nvme_fcloop nvmet_fc nvme_fc nvmet
nvme_fabrics platform_profile dell_wmi dell_smbios amd_atl
intel_rapl_msr intel_rapl_common amd64_edac sparse_keymap edac_mce_amd
rfkill video vfat dcdbas fat kvm_amd cdc_ether usbnet mii kvm
irqbypass dell_wmi_descriptor wmi_bmof rapl acpi_cpufreq pcspkr
ipmi_ssif i2c_piix4 ptdma k10temp i2c_smbus acpi_power_meter ipmi_si
acpi_ipmi ipmi_devintf ipmi_msghandler sg loop fuse xfs sd_mod nvme
ahci mgag200 libahci i2c_algo_bit mpt3sas ghash_clmulni_intel
nvme_core tg3 raid_class libata nvme_keyring ccp nvme_auth
scsi_transport_sas sp5100_tco wmi sunrpc dm_mirror dm_region_hash
dm_log dm_mod i2c_dev nfnetlink [last unloaded: nvmet_fc]
[24814.514133] ---[ end trace 0000000000000000 ]---
[24814.691561] RIP: 0010:kasan_byte_accessible+0x15/0x30
[24814.696869] Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 90 0f 1f 40 d6 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03
48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 0e d5 04 02 66 66 2e 0f 1f 84 00
00 00
[24814.715839] RSP: 0018:ffffc9000bc9fb68 EFLAGS: 00010286
[24814.721279] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[24814.728651] RDX: 0000000000000000 RSI: ffffffff89610547 RDI: dffffc0000000005
[24814.736122] RBP: 0000000000000028 R08: 0000000000000001 R09: 0000000000000000
[24814.743575] R10: ffffffff8b7bd367 R11: 0000000000000001 R12: ffffffff89610547
[24814.750962] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
[24814.758254] FS:  0000000000000000(0000) GS:ffff8887d23ca000(0000)
knlGS:0000000000000000
[24814.766373] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[24814.772139] CR2: 0000555867b457e8 CR3: 000000020526f000 CR4: 0000000000350ef0
[24814.779291] Kernel panic - not syncing: Fatal exception
[24814.785098] Kernel Offset: 0x5600000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[24814.976844] ---[ end Kernel panic - not syncing: Fatal exception ]---

-- 
Best Regards,
  Yi Zhang