program:
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/task-filter\x00', 0x1, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/probability\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='N', 0x1)
write(r1, &(0x7f0000000100)='10', 0x2)
bpf$MAP_CREATE(0x0, &(0x7f0000000840)=ANY=[@ANYBLOB="230000000100000002"], 0x48)
[ 212.688558][ T4643] Bluetooth: hci0: command tx timeout
[ 212.748355][ T5323] FAULT_INJECTION: forcing a failure.
[ 212.748355][ T5323] name failslab, interval 1, probability 10, space 0, times 1
[ 212.748430][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: kworker/0:7 Not tainted syzkaller #0 PREEMPT(full)
[ 212.748461][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 212.748469][ T5323] Workqueue: events drm_fb_helper_damage_work
[ 212.748620][ T5323] Call Trace:
[ 212.748626][ T5323]
[ 212.748631][ T5323] dump_stack_lvl+0xe8/0x150
[ 212.748661][ T5323] should_fail_ex+0x410/0x560
[ 212.748698][ T5323] should_failslab+0xa8/0x100
[ 212.748723][ T5323] __kmalloc_cache_noprof+0xa3/0x600
[ 212.748759][ T5323] ? virtio_gpu_crtc_atomic_check+0x9/0x20
[ 212.748780][ T5323] ? drm_atomic_helper_setup_commit+0x1b2/0x1a30
[ 212.748797][ T5323] ? drm_atomic_helper_setup_commit+0x1b2/0x1a30
[ 212.748812][ T5323] drm_atomic_helper_setup_commit+0x1b2/0x1a30
[ 212.748826][ T5323] ? drm_atomic_helper_check+0x12c/0x190
[ 212.748851][ T5323] drm_atomic_helper_commit+0x6a/0xb10
[ 212.748866][ T5323] ? __pfx_drm_atomic_helper_commit+0x10/0x10
[ 212.748878][ T5323] drm_atomic_commit+0x24e/0x2b0
[ 212.748894][ T5323] ? __pfx_drm_atomic_commit+0x10/0x10
[ 212.748906][ T5323] ? __pfx___drm_printfn_info+0x10/0x10
[ 212.748929][ T5323] ? drm_modeset_unlock+0x38/0x100
[ 212.748944][ T5323] drm_atomic_helper_dirtyfb+0xe2f/0xfd0
[ 212.748970][ T5323] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 212.748998][ T5323] ? do_raw_spin_lock+0x12b/0x2f0
[ 212.749037][ T5323] drm_fbdev_shmem_helper_fb_dirty+0x160/0x310
[ 212.749088][ T5323] drm_fb_helper_damage_work+0x84c/0xf20
[ 212.749108][ T5323] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 212.749137][ T5323] ? lock_acquire+0x115/0x350
[ 212.749154][ T5323] ? rcu_is_watching+0x16/0xb0
[ 212.749170][ T5323] ? process_scheduled_works+0x97a/0x1630
[ 212.749186][ T5323] process_scheduled_works+0xc3d/0x1630
[ 212.749221][ T5323] ? __pfx_process_scheduled_works+0x10/0x10
[ 212.749239][ T5323] ? assign_work+0x3cf/0x5d0
[ 212.749258][ T5323] worker_thread+0xa47/0xfb0
[ 212.749284][ T5323] ? __kthread_parkme+0x71/0x1f0
[ 212.749306][ T5323] kthread+0x38b/0x480
[ 212.749319][ T5323] ? __pfx_worker_thread+0x10/0x10
[ 212.749333][ T5323] ? __pfx_kthread+0x10/0x10
[ 212.749347][ T5323] ret_from_fork+0x514/0xb70
[ 212.749362][ T5323] ? __pfx_ret_from_fork+0x10/0x10
[ 212.749373][ T5323] ? __switch_to+0xc89/0x1420
[ 212.749393][ T5323] ? __pfx_kthread+0x10/0x10
[ 212.749406][ T5323] ret_from_fork_asm+0x1a/0x30
[ 212.749434][ T5323]
[ 212.749773][ T4682] FAULT_INJECTION: forcing a failure.
[ 212.749773][ T4682] name failslab, interval 1, probability 10, space 0, times 1
[ 212.749823][ T4682] CPU: 0 UID: 0 PID: 4682 Comm: klogd Not tainted syzkaller #0 PREEMPT(full)
[ 212.749853][ T4682] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 212.749861][ T4682] Call Trace:
[ 212.749866][ T4682]
[ 212.749870][ T4682] dump_stack_lvl+0xe8/0x150
[ 212.749887][ T4682] should_fail_ex+0x410/0x560
[ 212.749905][ T4682] ? __alloc_skb+0x1db/0x7a0
[ 212.749979][ T4682] should_failslab+0xa8/0x100
[ 212.749991][ T4682] ? __alloc_skb+0x1db/0x7a0
[ 212.750004][ T4682] kmem_cache_alloc_node_noprof+0xa1/0x610
[ 212.750017][ T4682] ? __alloc_skb+0x18d/0x7a0
[ 212.750032][ T4682] ? __alloc_skb+0x1db/0x7a0
[ 212.750049][ T4682] __alloc_skb+0x1db/0x7a0
[ 212.750066][ T4682] alloc_skb_with_frags+0xc6/0x760
[ 212.750080][ T4682] ? __lock_acquire+0x747/0x2de0
[ 212.750097][ T4682] sock_alloc_send_pskb+0x878/0x990
[ 212.750120][ T4682] ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 212.750133][ T4682] ? sock_def_readable+0xae/0x550
[ 212.750149][ T4682] ? bpf_lsm_socket_getpeersec_dgram+0x9/0x20
[ 212.750164][ T4682] unix_dgram_sendmsg+0x4fe/0x1870
[ 212.750205][ T4682] ? __pfx_unix_dgram_sendmsg+0x10/0x10
[ 212.750222][ T4682] ? aa_sock_msg_perm+0x129/0x210
[ 212.750270][ T4682] ? apparmor_socket_sendmsg+0x98/0x360
[ 212.750289][ T4682] ? __pfx_unix_dgram_sendmsg+0x10/0x10
[ 212.750303][ T4682] sock_sendmsg_nosec+0x13a/0x180
[ 212.750320][ T4682] __sys_sendto+0x408/0x5a0
[ 212.750337][ T4682] ? bpf_lsm_capable+0x9/0x20
[ 212.750353][ T4682] ? __pfx___sys_sendto+0x10/0x10
[ 212.750373][ T4682] ? ktime_get+0x1f5/0x220
[ 212.750392][ T4682] ? rcu_is_watching+0x16/0xb0
[ 212.750409][ T4682] __x64_sys_sendto+0xde/0x100
[ 212.750427][ T4682] do_syscall_64+0x166/0x520
[ 212.750452][ T4682] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 212.750465][ T4682] ? clear_bhb_loop+0x70/0xc0
[ 212.750480][ T4682] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 212.750490][ T4682] RIP: 0033:0x7f1d07f22407
[ 212.750501][ T4682] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
[ 212.750523][ T4682] RSP: 002b:00007ffe1b539980 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 212.750536][ T4682] RAX: ffffffffffffffda RBX: 00007f1d07dd2c80 RCX: 00007f1d07f22407
[ 212.750545][ T4682] RDX: 000000000000005d RSI: 00007ffe1b539ac0 RDI: 0000000000000003
[ 212.750552][ T4682] RBP: 00007ffe1b539ef0 R08: 0000000000000000 R09: 0000000000000000
[ 212.750559][ T4682] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe1b539f08
[ 212.750566][ T4682] R13: 00007ffe1b539ac0 R14: 0000000000000042 R15: 00007ffe1b539ac0
[ 212.750582][ T4682]
[ 212.758692][ T5323] ------------[ cut here ]------------
[ 212.758724][ T5323] virtio-pci 0000:00:01.0: [drm] Dirty helper failed: ret=-12
[ 212.758754][ T5323] WARNING: drivers/gpu/drm/drm_fbdev_shmem.c:118 at drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310, CPU#0: kworker/0:7/5323
[ 212.986288][ T5323] Modules linked in:
[ 212.987888][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: kworker/0:7 Not tainted syzkaller #0 PREEMPT(full)
[ 212.991727][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 212.996054][ T5323] Workqueue: events drm_fb_helper_damage_work
[ 212.998843][ T5323] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 213.001811][ T5323] Code: 29 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 5a 20 9b fc 4d 8b 27 48 89 df 4c 89 f6 4c 89 e2 8b 5c 24 04 89 d9 <67> 48 0f b9 3a 89 d8 e9 f7 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f
[ 213.009726][ T5323] RSP: 0018:ffffc9000e6af898 EFLAGS: 00010246
[ 213.013130][ T5323] RAX: 1ffff11003f5541a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 213.016431][ T5323] RDX: ffff88801f884920 RSI: ffffffff8c79be40 RDI: ffffffff90862170
[ 213.019674][ T5323] RBP: ffff888000a3a008 R08: ffffc9000e6af5e7 R09: 1ffff92001cd5ebc
[ 213.023127][ T5323] R10: dffffc0000000000 R11: fffff52001cd5ebd R12: ffff88801f884920
[ 213.026578][ T5323] R13: dffffc0000000000 R14: ffffffff8c79be40 R15: ffff88801faaa0d0
[ 213.030081][ T5323] FS: 0000000000000000(0000) GS:ffff88808c2ca000(0000) knlGS:0000000000000000
[ 213.034126][ T5323] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 213.036772][ T5323] CR2: 00007f1d08029560 CR3: 0000000012b94000 CR4: 0000000000352ef0
[ 213.040241][ T5323] Call Trace:
[ 213.041765][ T5323]
[ 213.042984][ T5323] drm_fb_helper_damage_work+0x84c/0xf20
[ 213.045065][ T5323] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 213.048219][ T5323] ? lock_acquire+0x115/0x350
[ 213.050172][ T5323] ? rcu_is_watching+0x16/0xb0
[ 213.052427][ T5323] ? process_scheduled_works+0x97a/0x1630
[ 213.054760][ T5323] process_scheduled_works+0xc3d/0x1630
[ 213.056949][ T5323] ? __pfx_process_scheduled_works+0x10/0x10
[ 213.059130][ T5323] ? assign_work+0x3cf/0x5d0
[ 213.060972][ T5323] worker_thread+0xa47/0xfb0
[ 213.062810][ T5323] ? __kthread_parkme+0x71/0x1f0
[ 213.064812][ T5323] kthread+0x38b/0x480
[ 213.066530][ T5323] ? __pfx_worker_thread+0x10/0x10
[ 213.068784][ T5323] ? __pfx_kthread+0x10/0x10
[ 213.070537][ T5323] ret_from_fork+0x514/0xb70
[ 213.072360][ T5323] ? __pfx_ret_from_fork+0x10/0x10
[ 213.074529][ T5323] ? __switch_to+0xc89/0x1420
[ 213.076468][ T5323] ? __pfx_kthread+0x10/0x10
[ 213.078606][ T5323] ret_from_fork_asm+0x1a/0x30
[ 213.080587][ T5323]
[ 213.082002][ T5323] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 213.084711][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: kworker/0:7 Not tainted syzkaller #0 PREEMPT(full)
[ 213.088183][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 213.092388][ T5323] Workqueue: events drm_fb_helper_damage_work
[ 213.094950][ T5323] Call Trace:
[ 213.096393][ T5323]
[ 213.097732][ T5323] vpanic+0x56d/0xa60
[ 213.099342][ T5323] ? __pfx__printk+0x10/0x10
[ 213.101127][ T5323] ? __pfx_vpanic+0x10/0x10
[ 213.102879][ T5323] ? is_bpf_text_address+0x292/0x2b0
[ 213.104925][ T5323] ? is_bpf_text_address+0x26/0x2b0
[ 213.107150][ T5323] panic+0xc5/0xd0
[ 213.108729][ T5323] ? __pfx_panic+0x10/0x10
[ 213.110565][ T5323] ? ret_from_fork_asm+0x1a/0x30
[ 213.112245][ T5323] __warn+0x315/0x4c0
[ 213.113614][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 213.115701][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 213.118196][ T5323] __report_bug+0x276/0x570
[ 213.120064][ T5323] ? drm_modeset_acquire_fini+0x27/0x180
[ 213.122033][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 213.124638][ T5323] ? __pfx___report_bug+0x10/0x10
[ 213.126796][ T5323] ? drm_atomic_helper_dirtyfb+0xf27/0xfd0
[ 213.129122][ T5323] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 213.131459][ T5323] report_bug_entry+0x19b/0x290
[ 213.133446][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 213.135968][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310
[ 213.138632][ T5323] handle_bug+0xce/0x200
[ 213.140277][ T5323] exc_invalid_op+0x1a/0x50
[ 213.142180][ T5323] asm_exc_invalid_op+0x1a/0x20
[ 213.144295][ T5323] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 213.147149][ T5323] Code: 29 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 5a 20 9b fc 4d 8b 27 48 89 df 4c 89 f6 4c 89 e2 8b 5c 24 04 89 d9 <67> 48 0f b9 3a 89 d8 e9 f7 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f
[ 213.155051][ T5323] RSP: 0018:ffffc9000e6af898 EFLAGS: 00010246
[ 213.157575][ T5323] RAX: 1ffff11003f5541a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 213.160801][ T5323] RDX: ffff88801f884920 RSI: ffffffff8c79be40 RDI: ffffffff90862170
[ 213.164184][ T5323] RBP: ffff888000a3a008 R08: ffffc9000e6af5e7 R09: 1ffff92001cd5ebc
[ 213.167464][ T5323] R10: dffffc0000000000 R11: fffff52001cd5ebd R12: ffff88801f884920
[ 213.170776][ T5323] R13: dffffc0000000000 R14: ffffffff8c79be40 R15: ffff88801faaa0d0
[ 213.174247][ T5323] ? drm_fbdev_shmem_helper_fb_dirty+0x260/0x310
[ 213.176881][ T5323] drm_fb_helper_damage_work+0x84c/0xf20
[ 213.179228][ T5323] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 213.181836][ T5323] ? lock_acquire+0x115/0x350
[ 213.183844][ T5323] ? rcu_is_watching+0x16/0xb0
[ 213.185910][ T5323] ? process_scheduled_works+0x97a/0x1630
[ 213.188276][ T5323] process_scheduled_works+0xc3d/0x1630
[ 213.190510][ T5323] ? __pfx_process_scheduled_works+0x10/0x10
[ 213.192931][ T5323] ? assign_work+0x3cf/0x5d0
[ 213.194840][ T5323] worker_thread+0xa47/0xfb0
[ 213.196799][ T5323] ? __kthread_parkme+0x71/0x1f0
[ 213.198891][ T5323] kthread+0x38b/0x480
[ 213.200515][ T5323] ? __pfx_worker_thread+0x10/0x10
[ 213.202626][ T5323] ? __pfx_kthread+0x10/0x10
[ 213.204612][ T5323] ret_from_fork+0x514/0xb70
[ 213.206531][ T5323] ? __pfx_ret_from_fork+0x10/0x10
[ 213.208765][ T5323] ? __switch_to+0xc89/0x1420
[ 213.211029][ T5323] ? __pfx_kthread+0x10/0x10
[ 213.212957][ T5323] ret_from_fork_asm+0x1a/0x30
[ 213.215094][ T5323]
[ 213.216936][ T5323] Kernel Offset: disabled
[ 213.218897][ T5323] Rebooting in 86400 seconds..