------------[ cut here ]------------
ap->ops->qc_defer(qc)
WARNING: drivers/ata/libata-scsi.c:1677 at ata_scsi_deferred_qc_work+0x199/0x1f0 drivers/ata/libata-scsi.c:1677, CPU#2: kworker/2:0H/29347
Modules linked in:
CPU: 2 UID: 0 PID: 29347 Comm: kworker/2:0H Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events_highpri ata_scsi_deferred_qc_work
RIP: 0010:ata_scsi_deferred_qc_work+0x199/0x1f0 drivers/ata/libata-scsi.c:1677
Code: 48 48 8b bb 90 df ff ff 48 89 ee 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d7 6f 15 05 e8 32 de f7 fb e9 0d ff ff ff e8 18 61 8b fb 90 <0f> 0b 90 eb 86 4c 89 ff e8 4a de f7 fb e9 bb fe ff ff 4c 89 ef e8
RSP: 0018:ffffc9000dbdfc10 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff88802aa6a080 RCX: ffffffff867d514f
RDX: ffff8880355224c0 RSI: ffffffff867d51c8 RDI: ffff8880355224c0
RBP: 0000000000000246 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88802aa68010 R14: ffff88802aa69710 R15: ffff88802aa6a0c8
FS: 0000000000000000(0000) GS:ffff8880d6545000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4f59e0d58 CR3: 000000005ec75000 CR4: 0000000000352ef0
Call Trace:
<TASK>
process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275
process_scheduled_works kernel/workqueue.c:3358 [inline]
worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
kthread+0x370/0x450 kernel/kthread.c:467
ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>