program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./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)='100', 0x3)
lsetxattr$trusted_overlay_origin(0x0, &(0x7f00000001c0), &(0x7f0000000340), 0x2, 0x2)
mount$9p_fd(0x0, 0x0, 0x0, 0x1000, 0x0)
[ 86.039062][ T4667] Bluetooth: hci0: command tx timeout
[ 86.157330][ T5347] FAULT_INJECTION: forcing a failure.
[ 86.157330][ T5347] name failslab, interval 1, probability 100, space 0, times 1
[ 86.157365][ T5347] CPU: 0 UID: 0 PID: 5347 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 86.157378][ T5347] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 86.157385][ T5347] Call Trace:
[ 86.157390][ T5347]
[ 86.157394][ T5347] dump_stack_lvl+0xe8/0x150
[ 86.157516][ T5347] should_fail_ex+0x3eb/0x540
[ 86.157584][ T5347] should_failslab+0xa8/0x100
[ 86.157623][ T5347] __kvmalloc_node_noprof+0x171/0x820
[ 86.157659][ T5347] ? vmemdup_user+0x2b/0xd0
[ 86.157691][ T5347] ? vmemdup_user+0x2b/0xd0
[ 86.157707][ T5347] vmemdup_user+0x2b/0xd0
[ 86.157720][ T5347] path_setxattrat+0x2d0/0x450
[ 86.157771][ T5347] ? __pfx_path_setxattrat+0x10/0x10
[ 86.157784][ T5347] ? do_futex+0x3e7/0x4e0
[ 86.157840][ T5347] ? rcu_is_watching+0x16/0xb0
[ 86.157879][ T5347] __x64_sys_lsetxattr+0xbf/0xe0
[ 86.157897][ T5347] do_syscall_64+0x166/0x520
[ 86.157971][ T5347] ? trace_irq_disable+0x3b/0x140
[ 86.158000][ T5347] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 86.158009][ T5347] ? clear_bhb_loop+0x70/0xc0
[ 86.158018][ T5347] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 86.158030][ T5347] RIP: 0033:0x7f527919fb19
[ 86.158042][ T5347] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 86.158052][ T5347] RSP: 002b:00007f5279fdcfe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
[ 86.158067][ T5347] RAX: ffffffffffffffda RBX: 00007f5279425fa0 RCX: 00007f527919fb19
[ 86.158076][ T5347] RDX: 0000200000000340 RSI: 00002000000001c0 RDI: 0000000000000000
[ 86.158084][ T5347] RBP: 00007f5279237b70 R08: 0000000000000002 R09: 0000000000000000
[ 86.158091][ T5347] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
[ 86.158097][ T5347] R13: 00007f5279426038 R14: 00007f5279425fa0 R15: 00007ffd9d56abc8
[ 86.158116][ T5347]
[ 86.158240][ T1059] FAULT_INJECTION: forcing a failure.
[ 86.158240][ T1059] name failslab, interval 1, probability 100, space 0, times 1
[ 86.158265][ T1059] CPU: 0 UID: 0 PID: 1059 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full)
[ 86.158277][ T1059] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 86.158283][ T1059] Workqueue: ipv6_addrconf addrconf_dad_work
[ 86.158355][ T1059] Call Trace:
[ 86.158360][ T1059]
[ 86.158365][ T1059] dump_stack_lvl+0xe8/0x150
[ 86.158384][ T1059] should_fail_ex+0x3eb/0x540
[ 86.158398][ T1059] ? __alloc_skb+0x1db/0x7a0
[ 86.158423][ T1059] should_failslab+0xa8/0x100
[ 86.158440][ T1059] ? __alloc_skb+0x1db/0x7a0
[ 86.158453][ T1059] kmem_cache_alloc_node_noprof+0x9c/0x600
[ 86.158465][ T1059] ? __alloc_skb+0x18d/0x7a0
[ 86.158480][ T1059] ? __alloc_skb+0x1db/0x7a0
[ 86.158500][ T1059] __alloc_skb+0x1db/0x7a0
[ 86.158519][ T1059] ndisc_alloc_skb+0xa0/0x480
[ 86.158535][ T1059] ndisc_send_rs+0x288/0x6b0
[ 86.158545][ T1059] ? ipv6_get_lladdr+0x2b/0x3f0
[ 86.158556][ T1059] addrconf_dad_completed+0x911/0xe60
[ 86.158575][ T1059] ? __pfx_addrconf_dad_completed+0x10/0x10
[ 86.158589][ T1059] ? addrconf_dad_work+0xe57/0x15c0
[ 86.158607][ T1059] ? __local_bh_enable_ip+0xd6/0x140
[ 86.158637][ T1059] addrconf_dad_work+0xcf8/0x15c0
[ 86.158658][ T1059] ? __pfx_addrconf_dad_work+0x10/0x10
[ 86.158678][ T1059] ? rcu_is_watching+0x16/0xb0
[ 86.158701][ T1059] ? process_scheduled_works+0x97a/0x1630
[ 86.158736][ T1059] process_scheduled_works+0xc3d/0x1630
[ 86.158789][ T1059] ? __pfx_process_scheduled_works+0x10/0x10
[ 86.158811][ T1059] ? assign_work+0x3cf/0x5d0
[ 86.158829][ T1059] worker_thread+0xa47/0xfb0
[ 86.158847][ T1059] kthread+0x38b/0x480
[ 86.158855][ T1059] ? __pfx_worker_thread+0x10/0x10
[ 86.158861][ T1059] ? __pfx_kthread+0x10/0x10
[ 86.158869][ T1059] ret_from_fork+0x514/0xb70
[ 86.158904][ T1059] ? __pfx_ret_from_fork+0x10/0x10
[ 86.158916][ T1059] ? __switch_to+0xc78/0x1410
[ 86.158929][ T1059] ? __pfx_kthread+0x10/0x10
[ 86.158942][ T1059] ret_from_fork_asm+0x1a/0x30
[ 86.158964][ T1059]
[ 86.159071][ T4715] FAULT_INJECTION: forcing a failure.
[ 86.159071][ T4715] name failslab, interval 1, probability 100, space 0, times 1
[ 86.159088][ T4715] CPU: 0 UID: 0 PID: 4715 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 86.159098][ T4715] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 86.159104][ T4715] Workqueue: events drm_fb_helper_damage_work
[ 86.159139][ T4715] Call Trace:
[ 86.159144][ T4715]
[ 86.159148][ T4715] dump_stack_lvl+0xe8/0x150
[ 86.159166][ T4715] should_fail_ex+0x3eb/0x540
[ 86.159182][ T4715] should_failslab+0xa8/0x100
[ 86.159198][ T4715] __kmalloc_cache_noprof+0x9e/0x600
[ 86.159211][ T4715] ? drm_atomic_commit_alloc+0xa9/0x100
[ 86.159247][ T4715] ? drm_atomic_commit_alloc+0xa9/0x100
[ 86.159266][ T4715] drm_atomic_commit_alloc+0xa9/0x100
[ 86.159283][ T4715] drm_atomic_helper_dirtyfb+0x129/0xfd0
[ 86.159322][ T4715] ? __lock_acquire+0x747/0x2de0
[ 86.159364][ T4715] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 86.159391][ T4715] ? do_raw_spin_lock+0x12b/0x2f0
[ 86.159410][ T4715] drm_fbdev_shmem_helper_fb_dirty+0x160/0x310
[ 86.159460][ T4715] drm_fb_helper_damage_work+0x84c/0xf20
[ 86.159481][ T4715] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 86.159503][ T4715] ? lock_acquire+0x115/0x350
[ 86.159523][ T4715] ? rcu_is_watching+0x16/0xb0
[ 86.159540][ T4715] ? process_scheduled_works+0x97a/0x1630
[ 86.159555][ T4715] process_scheduled_works+0xc3d/0x1630
[ 86.159588][ T4715] ? __pfx_process_scheduled_works+0x10/0x10
[ 86.159608][ T4715] ? assign_work+0x3cf/0x5d0
[ 86.159626][ T4715] worker_thread+0xa47/0xfb0
[ 86.159645][ T4715] ? __kthread_parkme+0x71/0x1f0
[ 86.159663][ T4715] kthread+0x38b/0x480
[ 86.159677][ T4715] ? __pfx_worker_thread+0x10/0x10
[ 86.159691][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.159703][ T4715] ret_from_fork+0x514/0xb70
[ 86.159736][ T4715] ? __pfx_ret_from_fork+0x10/0x10
[ 86.159750][ T4715] ? __switch_to+0xc78/0x1410
[ 86.159767][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.159785][ T4715] ret_from_fork_asm+0x1a/0x30
[ 86.159808][ T4715]
[ 86.160812][ T4715] ------------[ cut here ]------------
[ 86.160820][ T4715] virtio-pci 0000:00:01.0: [drm] Dirty helper failed: ret=-12
[ 86.160851][ T4715] WARNING: drivers/gpu/drm/drm_fbdev_shmem.c:118 at drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310, CPU#0: kworker/0:4/4715
[ 86.449044][ T4715] Modules linked in:
[ 86.450782][ T4715] CPU: 0 UID: 0 PID: 4715 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 86.454825][ T4715] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 86.459206][ T4715] Workqueue: events drm_fb_helper_damage_work
[ 86.461773][ T4715] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 86.464693][ T4715] Code: 17 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 fa 65 90 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
[ 86.472691][ T4715] RSP: 0018:ffffc90001b37898 EFLAGS: 00010246
[ 86.475247][ T4715] RAX: 1ffff1100617a41a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 86.478597][ T4715] RDX: ffff8880304a5f20 RSI: ffffffff8c9ace20 RDI: ffffffff91ca2530
[ 86.482065][ T4715] RBP: ffff888030526008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 86.485364][ T4715] R10: dffffc0000000000 R11: fffffbfff2056d1b R12: ffff8880304a5f20
[ 86.488774][ T4715] R13: dffffc0000000000 R14: ffffffff8c9ace20 R15: ffff888030bd20d0
[ 86.492391][ T4715] FS: 0000000000000000(0000) GS:ffff88808a9fa000(0000) knlGS:0000000000000000
[ 86.496342][ T4715] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 86.499122][ T4715] CR2: 00007f5279420100 CR3: 0000000041c7e000 CR4: 0000000000352ef0
[ 86.502477][ T4715] Call Trace:
[ 86.503961][ T4715]
[ 86.505277][ T4715] drm_fb_helper_damage_work+0x84c/0xf20
[ 86.507790][ T4715] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 86.510396][ T4715] ? lock_acquire+0x115/0x350
[ 86.512365][ T4715] ? rcu_is_watching+0x16/0xb0
[ 86.514430][ T4715] ? process_scheduled_works+0x97a/0x1630
[ 86.516861][ T4715] process_scheduled_works+0xc3d/0x1630
[ 86.519355][ T4715] ? __pfx_process_scheduled_works+0x10/0x10
[ 86.521950][ T4715] ? assign_work+0x3cf/0x5d0
[ 86.524045][ T4715] worker_thread+0xa47/0xfb0
[ 86.526101][ T4715] ? __kthread_parkme+0x71/0x1f0
[ 86.528427][ T4715] kthread+0x38b/0x480
[ 86.530184][ T4715] ? __pfx_worker_thread+0x10/0x10
[ 86.532394][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.534432][ T4715] ret_from_fork+0x514/0xb70
[ 86.536512][ T4715] ? __pfx_ret_from_fork+0x10/0x10
[ 86.539601][ T4715] ? __switch_to+0xc78/0x1410
[ 86.541658][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.543588][ T4715] ret_from_fork_asm+0x1a/0x30
[ 86.545551][ T4715]
[ 86.546912][ T4715] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 86.550092][ T4715] CPU: 0 UID: 0 PID: 4715 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 86.554023][ T4715] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 86.557986][ T4715] Workqueue: events drm_fb_helper_damage_work
[ 86.560476][ T4715] Call Trace:
[ 86.561897][ T4715]
[ 86.563120][ T4715] vpanic+0x26f/0x710
[ 86.564753][ T4715] panic+0xc5/0xd0
[ 86.566258][ T4715] ? __pfx_panic+0x10/0x10
[ 86.568115][ T4715] ? ret_from_fork_asm+0x1a/0x30
[ 86.570264][ T4715] __warn+0x315/0x4c0
[ 86.572031][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 86.574872][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 86.577650][ T4715] __report_bug+0x276/0x570
[ 86.579735][ T4715] ? drm_modeset_acquire_fini+0x27/0x180
[ 86.582520][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 86.585246][ T4715] ? __pfx___report_bug+0x10/0x10
[ 86.587288][ T4715] ? drm_atomic_helper_dirtyfb+0xf27/0xfd0
[ 86.589683][ T4715] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 86.591986][ T4715] report_bug_entry+0x19b/0x290
[ 86.593741][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 86.595994][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310
[ 86.598258][ T4715] handle_bug+0xce/0x200
[ 86.600020][ T4715] exc_invalid_op+0x1a/0x50
[ 86.602032][ T4715] asm_exc_invalid_op+0x1a/0x20
[ 86.604189][ T4715] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 86.607237][ T4715] Code: 17 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 fa 65 90 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
[ 86.615788][ T4715] RSP: 0018:ffffc90001b37898 EFLAGS: 00010246
[ 86.618278][ T4715] RAX: 1ffff1100617a41a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 86.621772][ T4715] RDX: ffff8880304a5f20 RSI: ffffffff8c9ace20 RDI: ffffffff91ca2530
[ 86.625171][ T4715] RBP: ffff888030526008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 86.628657][ T4715] R10: dffffc0000000000 R11: fffffbfff2056d1b R12: ffff8880304a5f20
[ 86.631989][ T4715] R13: dffffc0000000000 R14: ffffffff8c9ace20 R15: ffff888030bd20d0
[ 86.635398][ T4715] ? drm_fbdev_shmem_helper_fb_dirty+0x260/0x310
[ 86.638135][ T4715] drm_fb_helper_damage_work+0x84c/0xf20
[ 86.640513][ T4715] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 86.643133][ T4715] ? lock_acquire+0x115/0x350
[ 86.645280][ T4715] ? rcu_is_watching+0x16/0xb0
[ 86.647359][ T4715] ? process_scheduled_works+0x97a/0x1630
[ 86.649857][ T4715] process_scheduled_works+0xc3d/0x1630
[ 86.652186][ T4715] ? __pfx_process_scheduled_works+0x10/0x10
[ 86.655034][ T4715] ? assign_work+0x3cf/0x5d0
[ 86.657038][ T4715] worker_thread+0xa47/0xfb0
[ 86.659060][ T4715] ? __kthread_parkme+0x71/0x1f0
[ 86.661258][ T4715] kthread+0x38b/0x480
[ 86.663100][ T4715] ? __pfx_worker_thread+0x10/0x10
[ 86.665267][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.667239][ T4715] ret_from_fork+0x514/0xb70
[ 86.669385][ T4715] ? __pfx_ret_from_fork+0x10/0x10
[ 86.671686][ T4715] ? __switch_to+0xc78/0x1410
[ 86.673749][ T4715] ? __pfx_kthread+0x10/0x10
[ 86.675808][ T4715] ret_from_fork_asm+0x1a/0x30
[ 86.677869][ T4715]
[ 86.679734][ T4715] Kernel Offset: disabled
[ 86.681619][ T4715] Rebooting in 86400 seconds..