blktest nvme_trtyp3=tcp nvme/003 is failing on nvme-6.7

[Chaitanya Kulkarni]

Hi,

blktests nvme/003 is failing with following error message :-

In case this has been already discussed and fixed please ignore this
message.

[ 3081.633737] run blktests nvme/003 at 2023-10-11 20:21:13
[ 3081.649812] loop0: detected capacity change from 0 to 2097152
[ 3081.661590] nvmet: adding nsid 1 to subsystem blktests-subsystem-1
[ 3081.666424] nvmet_tcp: enabling port 0 (127.0.0.1:4420)
[ 3081.676553] nvmet: creating discovery controller 1 for subsystem 
nqn.2014-08.org.nvmexpress.discovery for NQN 
nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349.
[ 3081.676954] nvme nvme1: new ctrl: NQN 
"nqn.2014-08.org.nvmexpress.discovery", addr 127.0.0.1:4420
[ 3092.796012] nvme nvme1: Removing ctrl: NQN 
"nqn.2014-08.org.nvmexpress.discovery"
[ 3092.796342] ------------[ cut here ]------------
[ 3092.796344] WARNING: CPU: 34 PID: 19842 at kernel/workqueue.c:3400 
__flush_work.isra.0+0x25d/0x270
[ 3092.796354] Modules linked in: nvmet_tcp(O) nvme_tcp(O) 
nvme_fabrics(O) nvmet(O) loop nvme(O) nvme_core(O) nvme_common 
snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore 
ip6table_mangle ip6table_raw ip6table_security iptable_mangle 
iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink 
ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr 
intel_rapl_common xfs kvm_amd ccp ppdev kvm parport_pc parport irqbypass 
joydev i2c_piix4 pcspkr ip_tables bochs drm_vram_helper crct10dif_pclmul 
crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ttm 
ghash_clmulni_intel virtio_net net_failover sha512_ssse3 drm serio_raw 
virtio_blk failover ata_generic pata_acpi qemu_fw_cfg fuse [last 
unloaded: nvmet_tcp(O)]
[ 3092.796419] CPU: 34 PID: 19842 Comm: kworker/34:0 Tainted: G        
W  O     N 6.6.0-rc2nvme+ #18
[ 3092.796423] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), 
BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 3092.796425] Workqueue: nvmet-wq nvmet_tcp_release_queue_work [nvmet_tcp]
[ 3092.796436] RIP: 0010:__flush_work.isra.0+0x25d/0x270
[ 3092.796440] Code: 25 00 dc 02 00 48 89 44 24 40 8b 43 30 4c 8b 43 40 
89 c1 e9 e5 fe ff ff 40 30 f6 4c 8b 36 e9 24 fe ff ff 0f 0b e9 03 ff ff 
ff <0f> 0b 45 31 ed e9 f9 fe ff ff e8 94 a1 d3 00 0f 1f 40 00 90 90 90
[ 3092.796443] RSP: 0018:ffffc90005107d68 EFLAGS: 00010246
[ 3092.796446] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 
0000000000000000
[ 3092.796449] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 
ffff88810d33e230
[ 3092.796450] RBP: ffff88810d33e230 R08: 0000000000000000 R09: 
ffff88810d33e3c0
[ 3092.796452] R10: 0000000000000018 R11: 0000000000000018 R12: 
ffff88810d33e230
[ 3092.796454] R13: 0000000000000001 R14: ffff88810d33e010 R15: 
ffff88810d33e3a0
[ 3092.796459] FS:  0000000000000000(0000) GS:ffff8897dfa80000(0000) 
knlGS:0000000000000000
[ 3092.796461] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3092.796463] CR2: 00000000004c0438 CR3: 0000000235de0000 CR4: 
0000000000350ee0
[ 3092.796468] DR0: ffffffff8378f188 DR1: ffffffff8378f189 DR2: 
ffffffff8378f18a
[ 3092.796470] DR3: ffffffff8378f18b DR6: 00000000ffff0ff0 DR7: 
0000000000000600
[ 3092.796472] Call Trace:
[ 3092.796475]  <TASK>
[ 3092.796478]  ? __warn+0x80/0x130
[ 3092.796483]  ? __flush_work.isra.0+0x25d/0x270
[ 3092.796487]  ? report_bug+0x1c3/0x1d0
[ 3092.796492]  ? handle_bug+0x42/0x70
[ 3092.796496]  ? exc_invalid_op+0x14/0x70
[ 3092.796499]  ? asm_exc_invalid_op+0x16/0x20
[ 3092.796505]  ? __flush_work.isra.0+0x25d/0x270
[ 3092.796508]  ? _raw_spin_lock+0x13/0x40
[ 3092.796513]  ? raw_spin_rq_lock_nested+0x1b/0x30
[ 3092.796518]  ? newidle_balance+0x26e/0x400
[ 3092.796525]  __cancel_work_timer+0x108/0x190
[ 3092.796530]  nvmet_tcp_release_queue_work+0xd8/0x480 [nvmet_tcp]
[ 3092.796538]  process_one_work+0x147/0x300
[ 3092.796541]  worker_thread+0x27e/0x390
[ 3092.796544]  ? __pfx_worker_thread+0x10/0x10
[ 3092.796547]  kthread+0xf0/0x120
[ 3092.796552]  ? __pfx_kthread+0x10/0x10
[ 3092.796556]  ret_from_fork+0x30/0x50
[ 3092.796560]  ? __pfx_kthread+0x10/0x10
[ 3092.796564]  ret_from_fork_asm+0x1b/0x30
[ 3092.796571]  </TASK>
[ 3092.796572] ---[ end trace 0000000000000000 ]---

-ck