program:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
write(0xffffffffffffffff, &(0x7f0000000180)='1', 0x1)
openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
r0 = openat$nvme_fabrics(0xffffffffffffff9c, &(0x7f0000000300), 0x2, 0x0)
write(r0, &(0x7f0000000340)='transport=loop,nqn=test', 0x17)
mkdirat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys\x00', 0x1ff)
mount(&(0x7f0000000400)=@filename='sysfs\x00', &(0x7f00000003c0)='./sys\x00', &(0x7f0000000400)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./sys/class/nvme/nvme0/reset_controller\x00', 0x1, 0x0)
write(r1, &(0x7f0000000480)='1\x00', 0x1)
[ 93.294839][ T5288] Bluetooth: hci0: command tx timeout
[ 93.322949][ T9] cfg80211: failed to load regulatory.db
[ 93.476257][ T1055] ------------[ cut here ]------------
[ 93.476301][ T1055] 1
[ 93.476336][ T1055] WARNING: drivers/nvme/target/loop.c:455 at nvme_loop_reset_ctrl_work+0x423/0x810, CPU#0: kworker/u4:8/1055
[ 93.484579][ T1055] Modules linked in:
[ 93.486963][ T1055] CPU: 0 UID: 0 PID: 1055 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full)
[ 93.491070][ T1055] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 93.495181][ T1055] Workqueue: nvme-reset-wq nvme_loop_reset_ctrl_work
[ 93.497413][ T1055] RIP: 0010:nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.499521][ T1055] Code: 00 00 48 8b 44 24 18 8b 18 83 e3 fe bf 04 00 00 00 89 de e8 af 20 49 fb 83 fb 04 75 07 e8 a5 1b 49 fb eb 09 e8 9e 1b 49 fb 90 <0f> 0b 90 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
[ 93.505878][ T1055] RSP: 0018:ffffc90005357a80 EFLAGS: 00010293
[ 93.508260][ T1055] RAX: ffffffff867eb092 RBX: 0000000000000002 RCX: ffff88803676a580
[ 93.511767][ T1055] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000004
[ 93.515074][ T1055] RBP: 0000000000000000 R08: ffffffff907a377f R09: 1ffffffff20f46ef
[ 93.518432][ T1055] R10: dffffc0000000000 R11: fffffbfff20f46f0 R12: ffff888033ffcb10
[ 93.521957][ T1055] R13: 1ffff110067ff87d R14: dffffc0000000000 R15: ffff888033ffc000
[ 93.525399][ T1055] FS: 0000000000000000(0000) GS:ffff88808c2cf000(0000) knlGS:0000000000000000
[ 93.533238][ T1055] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 93.536104][ T1055] CR2: 00007fb3a757fff8 CR3: 00000000407a9000 CR4: 0000000000352ef0
[ 93.539603][ T1055] Call Trace:
[ 93.541204][ T1055]
[ 93.542503][ T1055] ? process_scheduled_works+0x97a/0x1630
[ 93.544957][ T1055] process_scheduled_works+0xc3d/0x1630
[ 93.547353][ T1055] ? __pfx_process_scheduled_works+0x10/0x10
[ 93.550092][ T1055] ? assign_work+0x3cf/0x5d0
[ 93.551975][ T1055] worker_thread+0xa47/0xfb0
[ 93.553873][ T1055] kthread+0x38b/0x480
[ 93.555598][ T1055] ? __pfx_worker_thread+0x10/0x10
[ 93.557704][ T1055] ? __pfx_kthread+0x10/0x10
[ 93.560042][ T1055] ret_from_fork+0x514/0xb70
[ 93.562556][ T1055] ? __pfx_ret_from_fork+0x10/0x10
[ 93.564995][ T1055] ? __switch_to+0xc89/0x1420
[ 93.567107][ T1055] ? __pfx_kthread+0x10/0x10
[ 93.569288][ T1055] ret_from_fork_asm+0x1a/0x30
[ 93.571476][ T1055]
[ 93.572566][ T1055] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 93.575523][ T1055] CPU: 0 UID: 0 PID: 1055 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full)
[ 93.579023][ T1055] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 93.582644][ T1055] Workqueue: nvme-reset-wq nvme_loop_reset_ctrl_work
[ 93.584980][ T1055] Call Trace:
[ 93.586157][ T1055]
[ 93.587188][ T1055] vpanic+0x56d/0xa60
[ 93.588560][ T1055] ? __pfx__printk+0x10/0x10
[ 93.590112][ T1055] ? __pfx_vpanic+0x10/0x10
[ 93.591649][ T1055] ? is_bpf_text_address+0x292/0x2b0
[ 93.593402][ T1055] ? is_bpf_text_address+0x26/0x2b0
[ 93.595266][ T1055] panic+0xc5/0xd0
[ 93.596580][ T1055] ? __pfx_panic+0x10/0x10
[ 93.598195][ T1055] ? ret_from_fork_asm+0x1a/0x30
[ 93.600137][ T1055] __warn+0x315/0x4c0
[ 93.601555][ T1055] ? nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.603792][ T1055] ? nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.605945][ T1055] __report_bug+0x276/0x570
[ 93.607575][ T1055] ? add_lock_to_list+0xc7/0x100
[ 93.609202][ T1055] ? nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.611164][ T1055] ? __pfx___report_bug+0x10/0x10
[ 93.612837][ T1055] ? nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.614748][ T1055] report_bug+0x16b/0x220
[ 93.616176][ T1055] ? nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.618085][ T1055] ? nvme_loop_reset_ctrl_work+0x425/0x810
[ 93.619984][ T1055] handle_bug+0x9c/0x200
[ 93.621432][ T1055] exc_invalid_op+0x1a/0x50
[ 93.623079][ T1055] asm_exc_invalid_op+0x1a/0x20
[ 93.624950][ T1055] RIP: 0010:nvme_loop_reset_ctrl_work+0x423/0x810
[ 93.627674][ T1055] Code: 00 00 48 8b 44 24 18 8b 18 83 e3 fe bf 04 00 00 00 89 de e8 af 20 49 fb 83 fb 04 75 07 e8 a5 1b 49 fb eb 09 e8 9e 1b 49 fb 90 <0f> 0b 90 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
[ 93.635877][ T1055] RSP: 0018:ffffc90005357a80 EFLAGS: 00010293
[ 93.638255][ T1055] RAX: ffffffff867eb092 RBX: 0000000000000002 RCX: ffff88803676a580
[ 93.641342][ T1055] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000004
[ 93.644428][ T1055] RBP: 0000000000000000 R08: ffffffff907a377f R09: 1ffffffff20f46ef
[ 93.647428][ T1055] R10: dffffc0000000000 R11: fffffbfff20f46f0 R12: ffff888033ffcb10
[ 93.650380][ T1055] R13: 1ffff110067ff87d R14: dffffc0000000000 R15: ffff888033ffc000
[ 93.653192][ T1055] ? nvme_loop_reset_ctrl_work+0x422/0x810
[ 93.655374][ T1055] ? process_scheduled_works+0x97a/0x1630
[ 93.657583][ T1055] process_scheduled_works+0xc3d/0x1630
[ 93.659749][ T1055] ? __pfx_process_scheduled_works+0x10/0x10
[ 93.662124][ T1055] ? assign_work+0x3cf/0x5d0
[ 93.663931][ T1055] worker_thread+0xa47/0xfb0
[ 93.665700][ T1055] kthread+0x38b/0x480
[ 93.667271][ T1055] ? __pfx_worker_thread+0x10/0x10
[ 93.669247][ T1055] ? __pfx_kthread+0x10/0x10
[ 93.671102][ T1055] ret_from_fork+0x514/0xb70
[ 93.672883][ T1055] ? __pfx_ret_from_fork+0x10/0x10
[ 93.674872][ T1055] ? __switch_to+0xc89/0x1420
[ 93.676712][ T1055] ? __pfx_kthread+0x10/0x10
[ 93.678504][ T1055] ret_from_fork_asm+0x1a/0x30
[ 93.680394][ T1055]
[ 93.681964][ T1055] Kernel Offset: disabled
[ 93.683620][ T1055] Rebooting in 86400 seconds..