program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
bpf$BPF_LINK_CREATE(0x1c, 0x0, 0x0)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/task-filter\x00', 0x1, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/probability\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='N', 0x1)
write(r1, &(0x7f0000000100)='100', 0x3)
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x200000, &(0x7f0000000500)={[{@nodelalloc}, {@norecovery}, {@min_batch_time={'min_batch_time', 0x3d, 0x10000005}}, {@nojournal_checksum}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@nodelalloc}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x200000}}, {@resgid}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x2000}}, {@jqfmt_vfsold}, {@barrier_val={'barrier', 0x3d, 0x7}}, {@barrier_val={'barrier', 0x3d, 0x81}}], [{@flag='ro'}]}, 0xfd, 0x573, &(0x7f0000000640)="$eJzs3V9rW+UfAPDvSZP9636/djCGeiGDXTgZS9fWPxOEzUvR4UDvZ2izMpouo0nHWgduF+7GGxmCiAPxBXjv5fAN+CoGOhgyil6IUDnpSZe1Sf8tNbH5fOBsz5Nzkud58pzvyfOck/QEMLBOpv/kIl6OiK+SiJGWdfnIVp5c3W756e2pdEliZeXj35O4sO61kuz/4SzzUkT8/EXEmdzGcmuLS7OlSqU8n+XH6nM3xmqLS2evzZVmyjPl6xOTk+ffnJx45+23utbW1y//+e1HD98//+Wp5W9+fHzsfhIX42i2Lm1XF4q405o5Wfo7SxXi4roNx7tQWD9Jel0BdmUoi/NCpMeAkRjKoh7Y/z6PiBVgQCXiHwZUcxzQnNt3aR78n/HkvdUJ0Mb251fPjcShxtzoyHLy3Mwone+OdqH8tIyffntwP11i8/MQh7fIA+zInbsRcS6f33j8S7Lj3+6da5w83tz6Mgbt8wd66WE6/knuRGyI/9za+CfajH+G28Tubmwd/7nHXSimo3T8927b8e/aoWt0KMv9rzHmKyRXr1XK5yLi/xFxOgoH0/xm13POLz9a6bSudfyXLmn5zbFgVo/H+YPPP2e6VC+9SJtbPbkb8Urb8W+y1v9Jm/5P34/L2yzjRPnBq53Wbd3+vbXyQ8Rrbfv/2RWtZPPrk2ON/WGsuVds9Me9E790Kr/X7U/7/8jm7R9NWq/X1nZexveH/ip3Wrfb/f9A8kkjfSB77FapXp8fjziQfJgfXv/4xLPnNvPN7dP2nz7VPv432//Tyden22z/veP3Om7aD/0/vaP+33ni0Qeffdep/O31/xuN1Onske0c/7ZbwRd57wAAAAAAAKDf5CLiaCS54lo6lysWV7/fcTyO5CrVWv3M1erC9elo/FZ2NAq55pXukZbvQ4xn34dt5ifW5Scj4lhEfD10uJEvTlUr071uPAAAAAAAAAAAAAAAAAAAAPSJ4Q6//0/9OtTr2gF7rnFjg4O9rgXQC1ve8r8bd3oC+tKW8Q/sWzuPf2cGYL/w+Q+DS/zD4BL/MLi2G/+FkT2uCPCv8/kPg0v8AwAAAAAAAAAAAAAAAAAAAAAAAAAAQFddvnQpXVaWn96eSvPTNxcXZqs3z06Xa7PFuYWp4lR1/kZxplqdqZSLU9W5rV6vUq3eGJ+IhVtj9XKtPlZbXLoyV124Xr9yba40U75SLvhjwwAAAAAAAAAAAAAAAAAAALBBbXFptlSplOclOiYuRF9UYy8buGpXT8/3Syskupro8YEJAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFr8EwAA//8DDjNQ")
[ 87.374236][ T5271] Bluetooth: hci0: command tx timeout
[ 87.451994][ T795] FAULT_INJECTION: forcing a failure.
[ 87.451994][ T795] name failslab, interval 1, probability 100, space 0, times 1
[ 87.458160][ T4985] FAULT_INJECTION: forcing a failure.
[ 87.458160][ T4985] name failslab, interval 1, probability 100, space 0, times 1
[ 87.463859][ T5311] FAULT_INJECTION: forcing a failure.
[ 87.463859][ T5311] name failslab, interval 1, probability 100, space 0, times 1
[ 87.469420][ T5307] FAULT_INJECTION: forcing a failure.
[ 87.469420][ T5307] name failslab, interval 1, probability 100, space 0, times 1
[ 87.475572][ T4688] FAULT_INJECTION: forcing a failure.
[ 87.475572][ T4688] name failslab, interval 1, probability 100, space 0, times 1
[ 87.481977][ T175] FAULT_INJECTION: forcing a failure.
[ 87.481977][ T175] name failslab, interval 1, probability 100, space 0, times 1
[ 87.487930][ T175] CPU: 0 UID: 0 PID: 175 Comm: kworker/u4:6 Not tainted syzkaller #0 PREEMPT(full)
[ 87.487947][ T175] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.487957][ T175] Workqueue: events_unbound nsim_dev_trap_report_work
[ 87.488058][ T175] Call Trace:
[ 87.488064][ T175]
[ 87.488078][ T175] dump_stack_lvl+0xe8/0x150
[ 87.488098][ T175] should_fail_ex+0x40c/0x560
[ 87.488119][ T175] should_failslab+0xa8/0x100
[ 87.488135][ T175] kmem_cache_alloc_node_noprof+0xb3/0x610
[ 87.488147][ T175] ? local_lock_release+0x9c/0x160
[ 87.488197][ T175] ? __alloc_skb+0x1d7/0x7a0
[ 87.488211][ T175] ? __alloc_skb+0x1d7/0x7a0
[ 87.488230][ T175] __alloc_skb+0x1d7/0x7a0
[ 87.488248][ T175] nsim_dev_trap_report_work+0x25f/0xb40
[ 87.488274][ T175] ? process_scheduled_works+0xa20/0x14e0
[ 87.488288][ T175] process_scheduled_works+0xa8e/0x14e0
[ 87.488315][ T175] ? __pfx_process_scheduled_works+0x10/0x10
[ 87.488329][ T175] ? assign_work+0x3cf/0x5d0
[ 87.488343][ T175] worker_thread+0xa47/0xfb0
[ 87.488362][ T175] ? __kthread_parkme+0x71/0x1f0
[ 87.488383][ T175] kthread+0x388/0x470
[ 87.488399][ T175] ? __pfx_worker_thread+0x10/0x10
[ 87.488411][ T175] ? __pfx_kthread+0x10/0x10
[ 87.488426][ T175] ret_from_fork+0x514/0xb70
[ 87.488444][ T175] ? __pfx_ret_from_fork+0x10/0x10
[ 87.488459][ T175] ? __switch_to+0xc89/0x1420
[ 87.488475][ T175] ? __pfx_kthread+0x10/0x10
[ 87.488490][ T175] ret_from_fork_asm+0x1a/0x30
[ 87.488517][ T175]
[ 87.490698][ T4688] CPU: 0 UID: 0 PID: 4688 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 87.490715][ T4688] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.490723][ T4688] Workqueue: events nsim_fib_event_work
[ 87.490739][ T4688] Call Trace:
[ 87.490743][ T4688]
[ 87.490748][ T4688] dump_stack_lvl+0xe8/0x150
[ 87.490766][ T4688] should_fail_ex+0x40c/0x560
[ 87.490787][ T4688] should_failslab+0xa8/0x100
[ 87.490801][ T4688] __kmalloc_cache_noprof+0xa8/0x660
[ 87.490812][ T4688] ? stack_depot_save_flags+0x33/0x800
[ 87.490823][ T4688] ? nsim_fib_event+0x4c8/0xa390
[ 87.490835][ T4688] ? nsim_fib_event+0x4c8/0xa390
[ 87.490851][ T4688] nsim_fib_event+0x4c8/0xa390
[ 87.490861][ T4688] ? worker_thread+0xa47/0xfb0
[ 87.490873][ T4688] ? kthread+0x388/0x470
[ 87.490886][ T4688] ? ret_from_fork+0x514/0xb70
[ 87.490928][ T4688] ? ret_from_fork_asm+0x1a/0x30
[ 87.490958][ T4688] ? __pfx_nsim_fib_event+0x10/0x10
[ 87.490979][ T4688] ? kasan_quarantine_put+0xbb/0x1f0
[ 87.490999][ T4688] nsim_fib_event_work+0x244/0x3b0
[ 87.491032][ T4688] ? __pfx_nsim_fib_event_work+0x10/0x10
[ 87.491047][ T4688] ? rcu_is_watching+0x15/0xb0
[ 87.491088][ T4688] ? process_scheduled_works+0xa20/0x14e0
[ 87.491101][ T4688] process_scheduled_works+0xa8e/0x14e0
[ 87.491128][ T4688] ? __pfx_process_scheduled_works+0x10/0x10
[ 87.491144][ T4688] ? assign_work+0x3cf/0x5d0
[ 87.491159][ T4688] worker_thread+0xa47/0xfb0
[ 87.491179][ T4688] ? __kthread_parkme+0x71/0x1f0
[ 87.491198][ T4688] kthread+0x388/0x470
[ 87.491212][ T4688] ? __pfx_worker_thread+0x10/0x10
[ 87.491223][ T4688] ? __pfx_kthread+0x10/0x10
[ 87.491238][ T4688] ret_from_fork+0x514/0xb70
[ 87.491255][ T4688] ? __pfx_ret_from_fork+0x10/0x10
[ 87.491269][ T4688] ? __switch_to+0xc89/0x1420
[ 87.491283][ T4688] ? __pfx_kthread+0x10/0x10
[ 87.491299][ T4688] ret_from_fork_asm+0x1a/0x30
[ 87.491324][ T4688]
[ 87.637221][ T5311] CPU: 0 UID: 0 PID: 5311 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 87.637241][ T5311] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.637249][ T5311] Call Trace:
[ 87.637256][ T5311]
[ 87.637261][ T5311] dump_stack_lvl+0xe8/0x150
[ 87.637286][ T5311] should_fail_ex+0x40c/0x560
[ 87.637307][ T5311] should_failslab+0xa8/0x100
[ 87.637321][ T5311] __kmalloc_cache_noprof+0xa8/0x660
[ 87.637334][ T5311] ? __se_sys_memfd_create+0x21d/0x410
[ 87.637347][ T5311] ? __se_sys_memfd_create+0x21d/0x410
[ 87.637363][ T5311] __se_sys_memfd_create+0x21d/0x410
[ 87.637375][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.637386][ T5311] do_syscall_64+0x174/0x580
[ 87.637401][ T5311] ? trace_irq_disable+0x3b/0x140
[ 87.637415][ T5311] ? clear_bhb_loop+0x70/0xc0
[ 87.637428][ T5311] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.637440][ T5311] RIP: 0033:0x7fc45839e0d9
[ 87.637452][ T5311] 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
[ 87.637462][ T5311] RSP: 002b:00007fc4592c4dc8 EFLAGS: 00000202 ORIG_RAX: 000000000000013f
[ 87.637474][ T5311] RAX: ffffffffffffffda RBX: 0000000000000573 RCX: 00007fc45839e0d9
[ 87.637481][ T5311] RDX: 00007fc4592c4ea0 RSI: 0000000000000000 RDI: 00007fc458435204
[ 87.637488][ T5311] RBP: 0000200000000640 R08: 00000000ffffffff R09: 0000000000000000
[ 87.637495][ T5311] R10: 0000000000000001 R11: 0000000000000202 R12: 0000200000000000
[ 87.637502][ T5311] R13: 00007fc4592c4ea0 R14: 00007fc4592c4e60 R15: 0000200000000500
[ 87.637518][ T5311]
[ 87.706865][ T795] CPU: 0 UID: 0 PID: 795 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full)
[ 87.706884][ T795] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.706916][ T795] Workqueue: mld mld_ifc_work
[ 87.706940][ T795] Call Trace:
[ 87.706948][ T795]
[ 87.706962][ T795] dump_stack_lvl+0xe8/0x150
[ 87.706980][ T795] should_fail_ex+0x40c/0x560
[ 87.707003][ T795] should_failslab+0xa8/0x100
[ 87.707017][ T795] kmem_cache_alloc_node_noprof+0xb3/0x610
[ 87.707029][ T795] ? local_lock_release+0x9c/0x160
[ 87.707045][ T795] ? __alloc_skb+0x1d7/0x7a0
[ 87.707058][ T795] ? __alloc_skb+0x1d7/0x7a0
[ 87.707076][ T795] __alloc_skb+0x1d7/0x7a0
[ 87.707094][ T795] mld_newpack+0x165/0xcb0
[ 87.707112][ T795] ? rcu_is_watching+0x15/0xb0
[ 87.707128][ T795] ? trace_contention_end+0x3d/0x140
[ 87.707140][ T795] ? __pfx_mld_newpack+0x10/0x10
[ 87.707154][ T795] ? __mutex_lock+0x30d/0x1550
[ 87.707171][ T795] ? __lock_acquire+0x683/0x2cf0
[ 87.707189][ T795] add_grec+0x119f/0x19d0
[ 87.707210][ T795] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 87.707228][ T795] mld_ifc_work+0x6f1/0xd60
[ 87.707248][ T795] ? process_scheduled_works+0xa20/0x14e0
[ 87.707261][ T795] process_scheduled_works+0xa8e/0x14e0
[ 87.707289][ T795] ? __pfx_process_scheduled_works+0x10/0x10
[ 87.707304][ T795] ? assign_work+0x3cf/0x5d0
[ 87.707319][ T795] worker_thread+0xa47/0xfb0
[ 87.707348][ T795] kthread+0x388/0x470
[ 87.707366][ T795] ? __pfx_worker_thread+0x10/0x10
[ 87.707377][ T795] ? __pfx_kthread+0x10/0x10
[ 87.707392][ T795] ret_from_fork+0x514/0xb70
[ 87.707410][ T795] ? __pfx_ret_from_fork+0x10/0x10
[ 87.707424][ T795] ? __switch_to+0xc89/0x1420
[ 87.707439][ T795] ? __pfx_kthread+0x10/0x10
[ 87.707454][ T795] ret_from_fork_asm+0x1a/0x30
[ 87.707480][ T795]
[ 87.707610][ T4985] CPU: 0 UID: 0 PID: 4985 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full)
[ 87.707623][ T4985] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.707629][ T4985] Call Trace:
[ 87.707633][ T4985]
[ 87.707637][ T4985] dump_stack_lvl+0xe8/0x150
[ 87.707653][ T4985] should_fail_ex+0x40c/0x560
[ 87.707673][ T4985] should_failslab+0xa8/0x100
[ 87.707688][ T4985] kmem_cache_alloc_node_noprof+0xb3/0x610
[ 87.707698][ T4985] ? local_lock_release+0x9c/0x160
[ 87.707713][ T4985] ? __alloc_skb+0x1d7/0x7a0
[ 87.707726][ T4985] ? __alloc_skb+0x1d7/0x7a0
[ 87.707744][ T4985] __alloc_skb+0x1d7/0x7a0
[ 87.707760][ T4985] alloc_skb_with_frags+0xc6/0x760
[ 87.707782][ T4985] sock_alloc_send_pskb+0x878/0x990
[ 87.707800][ T4985] ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 87.707810][ T4985] ? do_syscall_64+0x174/0x580
[ 87.707823][ T4985] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.707837][ T4985] ? __lock_acquire+0x683/0x2cf0
[ 87.707852][ T4985] ? bpf_lsm_socket_getpeersec_dgram+0x9/0x20
[ 87.707872][ T4985] unix_dgram_sendmsg+0x4fe/0x1870
[ 87.707892][ T4985] ? __unix_dgram_recvmsg+0x9f2/0xdc0
[ 87.707905][ T4985] ? aa_file_perm+0x18b/0x15f0
[ 87.707924][ T4985] ? __pfx_unix_dgram_sendmsg+0x10/0x10
[ 87.707941][ T4985] ? aa_sock_msg_perm+0xda/0x1b0
[ 87.707964][ T4985] ? unix_seqpacket_sendmsg+0x111/0x1e0
[ 87.707980][ T4985] ? __pfx_unix_seqpacket_sendmsg+0x10/0x10
[ 87.707994][ T4985] sock_sendmsg_nosec+0x13a/0x180
[ 87.708008][ T4985] sock_write_iter+0x2de/0x3e0
[ 87.708022][ T4985] ? __pfx_sock_write_iter+0x10/0x10
[ 87.708045][ T4985] do_iter_readv_writev+0x612/0x8c0
[ 87.708063][ T4985] ? __pfx_do_iter_readv_writev+0x10/0x10
[ 87.708080][ T4985] ? bpf_lsm_file_permission+0x9/0x20
[ 87.708096][ T4985] ? security_file_permission+0x75/0x260
[ 87.708110][ T4985] ? rw_verify_area+0x203/0x4c0
[ 87.708126][ T4985] vfs_writev+0x343/0x990
[ 87.708137][ T4985] ? bpf_lsm_file_permission+0x9/0x20
[ 87.708157][ T4985] ? __pfx_vfs_writev+0x10/0x10
[ 87.708193][ T4985] ? vfs_read+0x804/0xa80
[ 87.708215][ T4985] ? __pfx_set_user_sigmask+0x10/0x10
[ 87.708237][ T4985] do_writev+0x154/0x2e0
[ 87.708249][ T4985] ? __pfx_do_writev+0x10/0x10
[ 87.708264][ T4985] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.708276][ T4985] do_syscall_64+0x174/0x580
[ 87.708289][ T4985] ? trace_irq_disable+0x3b/0x140
[ 87.708303][ T4985] ? clear_bhb_loop+0x70/0xc0
[ 87.708316][ T4985] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.708328][ T4985] RIP: 0033:0x7f0d53129407
[ 87.708340][ T4985] 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
[ 87.708349][ T4985] RSP: 002b:00007ffd5fbcbad0 EFLAGS: 00000202 ORIG_RAX: 0000000000000014
[ 87.708361][ T4985] RAX: ffffffffffffffda RBX: 00007f0d5309f780 RCX: 00007f0d53129407
[ 87.708369][ T4985] RDX: 0000000000000005 RSI: 00007ffd5fbcbb30 RDI: 000000000000000f
[ 87.708375][ T4985] RBP: 000055ffb98bcff0 R08: 0000000000000000 R09: 0000000000000000
[ 87.708382][ T4985] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd5fbebf50
[ 87.708388][ T4985] R13: 0000000000000004 R14: 0000000000000148 R15: 00007ffd5fbdbd20
[ 87.708405][ T4985]
[ 87.710268][ T5307] CPU: 0 UID: 0 PID: 5307 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
[ 87.710283][ T5307] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 87.710291][ T5307] Workqueue: events drm_fb_helper_damage_work
[ 87.710312][ T5307] Call Trace:
[ 87.710317][ T5307]
[ 87.710322][ T5307] dump_stack_lvl+0xe8/0x150
[ 87.710339][ T5307] should_fail_ex+0x40c/0x560
[ 87.710360][ T5307] should_failslab+0xa8/0x100
[ 87.710374][ T5307] __kmalloc_cache_noprof+0xa8/0x660
[ 87.710388][ T5307] ? drm_atomic_commit_alloc+0xa9/0x100
[ 87.710405][ T5307] ? drm_atomic_commit_alloc+0xa9/0x100
[ 87.710425][ T5307] drm_atomic_commit_alloc+0xa9/0x100
[ 87.710443][ T5307] drm_atomic_helper_dirtyfb+0x129/0xfd0
[ 87.710459][ T5307] ? __lock_acquire+0x683/0x2cf0
[ 87.710478][ T5307] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 87.710502][ T5307] ? do_raw_spin_lock+0x12b/0x2f0
[ 87.710521][ T5307] drm_fbdev_shmem_helper_fb_dirty+0x160/0x310
[ 87.710540][ T5307] drm_fb_helper_damage_work+0x84c/0xf20
[ 87.710562][ T5307] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 87.710590][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 87.710605][ T5307] ? rcu_is_watching+0x15/0xb0
[ 87.710623][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 87.710635][ T5307] process_scheduled_works+0xa8e/0x14e0
[ 87.710663][ T5307] ? __pfx_process_scheduled_works+0x10/0x10
[ 87.710678][ T5307] ? assign_work+0x3cf/0x5d0
[ 87.710693][ T5307] worker_thread+0xa47/0xfb0
[ 87.710714][ T5307] ? __kthread_parkme+0x71/0x1f0
[ 87.710734][ T5307] kthread+0x388/0x470
[ 87.710749][ T5307] ? __pfx_worker_thread+0x10/0x10
[ 87.710760][ T5307] ? __pfx_kthread+0x10/0x10
[ 87.710775][ T5307] ret_from_fork+0x514/0xb70
[ 87.710792][ T5307] ? __pfx_ret_from_fork+0x10/0x10
[ 87.710807][ T5307] ? __switch_to+0xc89/0x1420
[ 87.710822][ T5307] ? __pfx_kthread+0x10/0x10
[ 87.710837][ T5307] ret_from_fork_asm+0x1a/0x30
[ 87.710863][ T5307]
[ 88.006639][ T5307] ------------[ cut here ]------------
[ 88.009547][ T5307] virtio-pci 0000:00:01.0: [drm] Dirty helper failed: ret=-12
[ 88.012735][ T5307] WARNING: drivers/gpu/drm/drm_fbdev_shmem.c:118 at drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310, CPU#0: kworker/0:6/5307
[ 88.017999][ T5307] Modules linked in:
[ 88.019962][ T5307] CPU: 0 UID: 0 PID: 5307 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
[ 88.025058][ T5307] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 88.029441][ T5307] Workqueue: events drm_fb_helper_damage_work
[ 88.032392][ T5307] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 88.035343][ T5307] Code: 35 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 1a 5b a4 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
[ 88.043982][ T5307] RSP: 0018:ffffc9000d9c78b8 EFLAGS: 00010246
[ 88.046530][ T5307] RAX: 1ffff11003a5001a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 88.049947][ T5307] RDX: ffff88801fa5ad60 RSI: ffffffff8c57c800 RDI: ffffffff90638ee0
[ 88.053576][ T5307] RBP: ffff88800083c008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 88.057092][ T5307] R10: dffffc0000000000 R11: fffffbfff1d94963 R12: ffff88801fa5ad60
[ 88.060637][ T5307] R13: dffffc0000000000 R14: ffffffff8c57c800 R15: ffff88801d2800d0
[ 88.064169][ T5307] FS: 0000000000000000(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000
[ 88.068033][ T5307] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 88.071189][ T5307] CR2: 00007f0d53166de0 CR3: 0000000043309000 CR4: 0000000000352ef0
[ 88.074709][ T5307] Call Trace:
[ 88.076258][ T5307]
[ 88.077569][ T5307] drm_fb_helper_damage_work+0x84c/0xf20
[ 88.080067][ T5307] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 88.082835][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 88.085322][ T5307] ? rcu_is_watching+0x15/0xb0
[ 88.087406][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 88.089861][ T5307] process_scheduled_works+0xa8e/0x14e0
[ 88.092351][ T5307] ? __pfx_process_scheduled_works+0x10/0x10
[ 88.094917][ T5307] ? assign_work+0x3cf/0x5d0
[ 88.096899][ T5307] worker_thread+0xa47/0xfb0
[ 88.098831][ T5307] ? __kthread_parkme+0x71/0x1f0
[ 88.100960][ T5307] kthread+0x388/0x470
[ 88.103613][ T5307] ? __pfx_worker_thread+0x10/0x10
[ 88.105750][ T5307] ? __pfx_kthread+0x10/0x10
[ 88.107807][ T5307] ret_from_fork+0x514/0xb70
[ 88.109883][ T5307] ? __pfx_ret_from_fork+0x10/0x10
[ 88.112128][ T5307] ? __switch_to+0xc89/0x1420
[ 88.114213][ T5307] ? __pfx_kthread+0x10/0x10
[ 88.116284][ T5307] ret_from_fork_asm+0x1a/0x30
[ 88.118398][ T5307]
[ 88.119763][ T5307] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 88.122768][ T5307] CPU: 0 UID: 0 PID: 5307 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
[ 88.126557][ T5307] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 88.130922][ T5307] Workqueue: events drm_fb_helper_damage_work
[ 88.133447][ T5307] Call Trace:
[ 88.134917][ T5307]
[ 88.136207][ T5307] vpanic+0x56c/0xa60
[ 88.138116][ T5307] ? __pfx__printk+0x10/0x10
[ 88.140108][ T5307] ? __pfx_vpanic+0x10/0x10
[ 88.142285][ T5307] ? is_bpf_text_address+0x292/0x2b0
[ 88.144850][ T5307] ? is_bpf_text_address+0x26/0x2b0
[ 88.147156][ T5307] panic+0xc5/0xd0
[ 88.148745][ T5307] ? __pfx_panic+0x10/0x10
[ 88.150727][ T5307] ? ret_from_fork_asm+0x1a/0x30
[ 88.152913][ T5307] __warn+0x315/0x4c0
[ 88.154676][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 88.157208][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 88.159884][ T5307] __report_bug+0x276/0x570
[ 88.161867][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 88.164501][ T5307] ? __pfx___report_bug+0x10/0x10
[ 88.166630][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310
[ 88.169374][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 88.172956][ T5307] report_bug_entry+0x19a/0x290
[ 88.175104][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 88.177980][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310
[ 88.180764][ T5307] handle_bug+0xce/0x200
[ 88.182629][ T5307] exc_invalid_op+0x1a/0x50
[ 88.184619][ T5307] asm_exc_invalid_op+0x1a/0x20
[ 88.186783][ T5307] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 88.189757][ T5307] Code: 35 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 1a 5b a4 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
[ 88.197872][ T5307] RSP: 0018:ffffc9000d9c78b8 EFLAGS: 00010246
[ 88.200604][ T5307] RAX: 1ffff11003a5001a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 88.204016][ T5307] RDX: ffff88801fa5ad60 RSI: ffffffff8c57c800 RDI: ffffffff90638ee0
[ 88.207310][ T5307] RBP: ffff88800083c008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 88.210738][ T5307] R10: dffffc0000000000 R11: fffffbfff1d94963 R12: ffff88801fa5ad60
[ 88.214150][ T5307] R13: dffffc0000000000 R14: ffffffff8c57c800 R15: ffff88801d2800d0
[ 88.217472][ T5307] ? drm_fbdev_shmem_helper_fb_dirty+0x260/0x310
[ 88.220159][ T5307] drm_fb_helper_damage_work+0x84c/0xf20
[ 88.222537][ T5307] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 88.225104][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 88.227494][ T5307] ? rcu_is_watching+0x15/0xb0
[ 88.229460][ T5307] ? process_scheduled_works+0xa20/0x14e0
[ 88.231709][ T5307] process_scheduled_works+0xa8e/0x14e0
[ 88.233903][ T5307] ? __pfx_process_scheduled_works+0x10/0x10
[ 88.236229][ T5307] ? assign_work+0x3cf/0x5d0
[ 88.238045][ T5307] worker_thread+0xa47/0xfb0
[ 88.240206][ T5307] ? __kthread_parkme+0x71/0x1f0
[ 88.242284][ T5307] kthread+0x388/0x470
[ 88.243996][ T5307] ? __pfx_worker_thread+0x10/0x10
[ 88.246195][ T5307] ? __pfx_kthread+0x10/0x10
[ 88.248171][ T5307] ret_from_fork+0x514/0xb70
[ 88.250257][ T5307] ? __pfx_ret_from_fork+0x10/0x10
[ 88.252429][ T5307] ? __switch_to+0xc89/0x1420
[ 88.254413][ T5307] ? __pfx_kthread+0x10/0x10
[ 88.256350][ T5307] ret_from_fork_asm+0x1a/0x30
[ 88.258381][ T5307]
[ 88.260140][ T5307] Kernel Offset: disabled
[ 88.262116][ T5307] Rebooting in 86400 seconds..