program: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$packet(0x11, 0x2, 0x300) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'netdevsim0\x00', 0x0}) io_setup(0xa, &(0x7f0000000080)=0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0) r4 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/task-filter\x00', 0x1, 0x0) r5 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/probability\x00', 0x1, 0x50) write(r4, &(0x7f0000000100)='N', 0x1) write(r5, &(0x7f0000000100)='100', 0x3) io_submit(r3, 0x1, &(0x7f0000000280)=[&(0x7f00000000c0)={0x400000, 0x0, 0x0, 0x1, 0x0, 0xffffffffffffffff, 0x0}]) sched_setaffinity(0x0, 0x0, 0x0) sendmsg$key(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f00008feff0)={0x0}}, 0x4040000) sendmsg$key(0xffffffffffffffff, &(0x7f0000000100)={0x4, 0x0, &(0x7f00008feff0)={&(0x7f0000005e80)=ANY=[@ANYBLOB="020d0000100000002f3144e90000000003000600eb1f00000200403fe0000001000000f5000000000800120002000100000000000000000030006c100201009f6eae02000000adb20200000000152c000000ffffffff00010a0014bb7acde1b8e96408d700000000030005000020000002"], 0x80}}, 0x1) r6 = socket$key(0xf, 0x3, 0x2) sendmmsg(r6, &(0x7f00000000c0), 0x2c8, 0x0) sendmsg$nl_route(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)=ANY=[@ANYBLOB="3400000010000100"/20, @ANYRES32=r2, @ANYBLOB="00000b000024e23e251fbe8ef967f1e4669fa4001400168010000180"], 0x34}}, 0x0) [ 94.148253][ T4649] Bluetooth: hci0: command tx timeout [ 94.367491][ T5322] FAULT_INJECTION: forcing a failure. [ 94.367491][ T5322] name failslab, interval 1, probability 100, space 0, times 1 [ 94.374543][ T1397] FAULT_INJECTION: forcing a failure. [ 94.374543][ T1397] name failslab, interval 1, probability 100, space 0, times 1 [ 94.374572][ T1397] CPU: 0 UID: 0 PID: 1397 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full) [ 94.374586][ T1397] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.374594][ T1397] Workqueue: events nsim_fib_event_work [ 94.374684][ T1397] Call Trace: [ 94.374690][ T1397] [ 94.374697][ T1397] dump_stack_lvl+0xe8/0x150 [ 94.374717][ T1397] should_fail_ex+0x410/0x560 [ 94.374769][ T1397] should_failslab+0xa8/0x100 [ 94.374783][ T1397] __kmalloc_cache_noprof+0xa3/0x600 [ 94.374801][ T1397] ? __lock_acquire+0x6df/0x2e50 [ 94.374813][ T1397] ? nsim_fib_event+0x4c8/0xa3a0 [ 94.374827][ T1397] ? nsim_fib_event+0x4c8/0xa3a0 [ 94.374846][ T1397] nsim_fib_event+0x4c8/0xa3a0 [ 94.374860][ T1397] ? worker_thread+0xa47/0xfb0 [ 94.374875][ T1397] ? kthread+0x38b/0x480 [ 94.374886][ T1397] ? ret_from_fork+0x514/0xb70 [ 94.374897][ T1397] ? ret_from_fork_asm+0x1a/0x30 [ 94.374952][ T1397] ? __pfx_nsim_fib_event+0x10/0x10 [ 94.374977][ T1397] ? kasan_quarantine_put+0xbb/0x1f0 [ 94.375006][ T1397] nsim_fib_event_work+0x244/0x3b0 [ 94.375022][ T1397] ? __pfx_nsim_fib_event_work+0x10/0x10 [ 94.375038][ T1397] ? rcu_is_watching+0x16/0xb0 [ 94.375061][ T1397] ? process_scheduled_works+0x97a/0x1630 [ 94.375077][ T1397] process_scheduled_works+0xc3d/0x1630 [ 94.375113][ T1397] ? __pfx_process_scheduled_works+0x10/0x10 [ 94.375134][ T1397] ? assign_work+0x3cf/0x5d0 [ 94.375153][ T1397] worker_thread+0xa47/0xfb0 [ 94.375178][ T1397] ? __kthread_parkme+0x71/0x1f0 [ 94.375203][ T1397] kthread+0x38b/0x480 [ 94.375215][ T1397] ? __pfx_worker_thread+0x10/0x10 [ 94.375229][ T1397] ? __pfx_kthread+0x10/0x10 [ 94.375243][ T1397] ret_from_fork+0x514/0xb70 [ 94.375257][ T1397] ? __pfx_ret_from_fork+0x10/0x10 [ 94.375268][ T1397] ? __switch_to+0xc89/0x1420 [ 94.375287][ T1397] ? __pfx_kthread+0x10/0x10 [ 94.375301][ T1397] ret_from_fork_asm+0x1a/0x30 [ 94.375329][ T1397] [ 94.375583][ T5320] FAULT_INJECTION: forcing a failure. [ 94.375583][ T5320] name failslab, interval 1, probability 100, space 0, times 1 [ 94.375600][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) [ 94.375612][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.375619][ T5320] Workqueue: events drm_fb_helper_damage_work [ 94.375638][ T5320] Call Trace: [ 94.375643][ T5320] [ 94.375648][ T5320] dump_stack_lvl+0xe8/0x150 [ 94.375666][ T5320] should_fail_ex+0x410/0x560 [ 94.375686][ T5320] should_failslab+0xa8/0x100 [ 94.375699][ T5320] __kmalloc_cache_noprof+0xa3/0x600 [ 94.375716][ T5320] ? drm_atomic_commit_alloc+0xa9/0x100 [ 94.375728][ T5320] ? drm_atomic_commit_alloc+0xa9/0x100 [ 94.375745][ T5320] drm_atomic_commit_alloc+0xa9/0x100 [ 94.375759][ T5320] drm_atomic_helper_dirtyfb+0x129/0xfd0 [ 94.375779][ T5320] ? __lock_acquire+0x6df/0x2e50 [ 94.375796][ T5320] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10 [ 94.375823][ T5320] ? do_raw_spin_lock+0x12b/0x2f0 [ 94.375849][ T5320] drm_fbdev_shmem_helper_fb_dirty+0x160/0x310 [ 94.375874][ T5320] drm_fb_helper_damage_work+0x84c/0xf20 [ 94.375899][ T5320] ? __pfx_drm_fb_helper_damage_work+0x10/0x10 [ 94.375929][ T5320] ? lock_acquire+0x115/0x350 [ 94.375947][ T5320] ? rcu_is_watching+0x16/0xb0 [ 94.375963][ T5320] ? process_scheduled_works+0x97a/0x1630 [ 94.375979][ T5320] process_scheduled_works+0xc3d/0x1630 [ 94.376016][ T5320] ? __pfx_process_scheduled_works+0x10/0x10 [ 94.376067][ T5320] ? assign_work+0x3cf/0x5d0 [ 94.376106][ T5320] worker_thread+0xa47/0xfb0 [ 94.376132][ T5320] ? __kthread_parkme+0x71/0x1f0 [ 94.376157][ T5320] kthread+0x38b/0x480 [ 94.376169][ T5320] ? __pfx_worker_thread+0x10/0x10 [ 94.376184][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.376197][ T5320] ret_from_fork+0x514/0xb70 [ 94.376211][ T5320] ? __pfx_ret_from_fork+0x10/0x10 [ 94.376223][ T5320] ? __switch_to+0xc89/0x1420 [ 94.376242][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.376255][ T5320] ret_from_fork_asm+0x1a/0x30 [ 94.376284][ T5320] [ 94.376548][ T5320] ------------[ cut here ]------------ [ 94.376554][ T5320] virtio-pci 0000:00:01.0: [drm] Dirty helper failed: ret=-12 [ 94.376562][ T5320] WARNING: drivers/gpu/drm/drm_fbdev_shmem.c:118 at drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310, CPU#0: kworker/0:6/5320 [ 94.570111][ T5320] Modules linked in: [ 94.571787][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) [ 94.575823][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.580185][ T5320] Workqueue: events drm_fb_helper_damage_work [ 94.583154][ T5320] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310 [ 94.586151][ T5320] Code: 29 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 fa 2a 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 [ 94.594727][ T5320] RSP: 0018:ffffc9000e35f898 EFLAGS: 00010246 [ 94.597408][ T5320] RAX: 1ffff11003f5441a RBX: 00000000fffffff4 RCX: 00000000fffffff4 [ 94.601040][ T5320] RDX: ffff88801f7b40c0 RSI: ffffffff8c79ae40 RDI: ffffffff908618a0 [ 94.604501][ T5320] RBP: ffff888000a1a008 R08: 0000000000000dc0 R09: 00000000ffffffff [ 94.607923][ T5320] R10: dffffc0000000000 R11: fffffbfff1dd6087 R12: ffff88801f7b40c0 [ 94.611580][ T5320] R13: dffffc0000000000 R14: ffffffff8c79ae40 R15: ffff88801faa20d0 [ 94.615078][ T5320] FS: 0000000000000000(0000) GS:ffff88808c2cd000(0000) knlGS:0000000000000000 [ 94.618664][ T5320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.621479][ T5320] CR2: 00007fb3c028b000 CR3: 0000000012ad1000 CR4: 0000000000352ef0 [ 94.625030][ T5320] Call Trace: [ 94.626467][ T5320] [ 94.627854][ T5320] drm_fb_helper_damage_work+0x84c/0xf20 [ 94.630628][ T5320] ? __pfx_drm_fb_helper_damage_work+0x10/0x10 [ 94.633348][ T5320] ? lock_acquire+0x115/0x350 [ 94.635443][ T5320] ? rcu_is_watching+0x16/0xb0 [ 94.637675][ T5320] ? process_scheduled_works+0x97a/0x1630 [ 94.640265][ T5320] process_scheduled_works+0xc3d/0x1630 [ 94.642691][ T5320] ? __pfx_process_scheduled_works+0x10/0x10 [ 94.645307][ T5320] ? assign_work+0x3cf/0x5d0 [ 94.647328][ T5320] worker_thread+0xa47/0xfb0 [ 94.649559][ T5320] ? __kthread_parkme+0x71/0x1f0 [ 94.651797][ T5320] kthread+0x38b/0x480 [ 94.653575][ T5320] ? __pfx_worker_thread+0x10/0x10 [ 94.655767][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.657783][ T5320] ret_from_fork+0x514/0xb70 [ 94.659910][ T5320] ? __pfx_ret_from_fork+0x10/0x10 [ 94.662282][ T5320] ? __switch_to+0xc89/0x1420 [ 94.664867][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.667109][ T5320] ret_from_fork_asm+0x1a/0x30 [ 94.669331][ T5320] [ 94.670712][ T5320] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 94.673719][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) [ 94.677653][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.681679][ T5320] Workqueue: events drm_fb_helper_damage_work [ 94.684165][ T5320] Call Trace: [ 94.685557][ T5320] [ 94.687053][ T5320] vpanic+0x56d/0xa60 [ 94.688977][ T5320] ? __pfx__printk+0x10/0x10 [ 94.690944][ T5320] ? __pfx_vpanic+0x10/0x10 [ 94.692878][ T5320] ? is_bpf_text_address+0x292/0x2b0 [ 94.694920][ T5320] ? is_bpf_text_address+0x26/0x2b0 [ 94.697167][ T5320] panic+0xc5/0xd0 [ 94.698838][ T5320] ? __pfx_panic+0x10/0x10 [ 94.700850][ T5320] ? ret_from_fork_asm+0x1a/0x30 [ 94.703053][ T5320] __warn+0x315/0x4c0 [ 94.704891][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310 [ 94.707771][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310 [ 94.710672][ T5320] __report_bug+0x276/0x570 [ 94.712792][ T5320] ? drm_modeset_acquire_fini+0x27/0x180 [ 94.715383][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310 [ 94.718248][ T5320] ? __pfx___report_bug+0x10/0x10 [ 94.720537][ T5320] ? drm_atomic_helper_dirtyfb+0xf27/0xfd0 [ 94.722918][ T5320] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10 [ 94.725497][ T5320] report_bug_entry+0x19b/0x290 [ 94.727553][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310 [ 94.730288][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310 [ 94.732682][ T5320] handle_bug+0xce/0x200 [ 94.734484][ T5320] exc_invalid_op+0x1a/0x50 [ 94.736442][ T5320] asm_exc_invalid_op+0x1a/0x20 [ 94.738501][ T5320] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310 [ 94.741461][ T5320] Code: 29 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 fa 2a 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 [ 94.749669][ T5320] RSP: 0018:ffffc9000e35f898 EFLAGS: 00010246 [ 94.752332][ T5320] RAX: 1ffff11003f5441a RBX: 00000000fffffff4 RCX: 00000000fffffff4 [ 94.755655][ T5320] RDX: ffff88801f7b40c0 RSI: ffffffff8c79ae40 RDI: ffffffff908618a0 [ 94.759086][ T5320] RBP: ffff888000a1a008 R08: 0000000000000dc0 R09: 00000000ffffffff [ 94.762515][ T5320] R10: dffffc0000000000 R11: fffffbfff1dd6087 R12: ffff88801f7b40c0 [ 94.765899][ T5320] R13: dffffc0000000000 R14: ffffffff8c79ae40 R15: ffff88801faa20d0 [ 94.769482][ T5320] ? drm_fbdev_shmem_helper_fb_dirty+0x260/0x310 [ 94.772421][ T5320] drm_fb_helper_damage_work+0x84c/0xf20 [ 94.775018][ T5320] ? __pfx_drm_fb_helper_damage_work+0x10/0x10 [ 94.777833][ T5320] ? lock_acquire+0x115/0x350 [ 94.780129][ T5320] ? rcu_is_watching+0x16/0xb0 [ 94.782360][ T5320] ? process_scheduled_works+0x97a/0x1630 [ 94.784842][ T5320] process_scheduled_works+0xc3d/0x1630 [ 94.787257][ T5320] ? __pfx_process_scheduled_works+0x10/0x10 [ 94.789947][ T5320] ? assign_work+0x3cf/0x5d0 [ 94.792013][ T5320] worker_thread+0xa47/0xfb0 [ 94.794183][ T5320] ? __kthread_parkme+0x71/0x1f0 [ 94.796388][ T5320] kthread+0x38b/0x480 [ 94.798186][ T5320] ? __pfx_worker_thread+0x10/0x10 [ 94.800383][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.802367][ T5320] ret_from_fork+0x514/0xb70 [ 94.804300][ T5320] ? __pfx_ret_from_fork+0x10/0x10 [ 94.806368][ T5320] ? __switch_to+0xc89/0x1420 [ 94.808418][ T5320] ? __pfx_kthread+0x10/0x10 [ 94.810370][ T5320] ret_from_fork_asm+0x1a/0x30 [ 94.812343][ T5320] [ 94.814067][ T5320] Kernel Offset: disabled [ 94.815889][ T5320] Rebooting in 86400 seconds..