Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.854648][ T8500] FAULT_INJECTION: forcing a failure. [ 72.854648][ T8500] name failslab, interval 1, probability 0, space 0, times 1 [ 72.867958][ T8500] CPU: 1 PID: 8500 Comm: syz-executor191 Not tainted 5.11.0-rc2-syzkaller #0 [ 72.876751][ T8500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.886829][ T8500] Call Trace: [ 72.890312][ T8500] dump_stack+0x107/0x163 [ 72.894929][ T8500] should_fail.cold+0x5/0xa [ 72.899924][ T8500] ? alloc_fixed_file_ref_node+0x41/0x230 [ 72.907977][ T8500] ? alloc_fixed_file_ref_node+0x41/0x230 [ 72.914374][ T8500] should_failslab+0x5/0x10 [ 72.919508][ T8500] kmem_cache_alloc_trace+0x55/0x360 [ 72.924947][ T8500] alloc_fixed_file_ref_node+0x41/0x230 [ 72.932277][ T8500] io_sqe_files_unregister+0x5a/0x770 [ 72.937803][ T8500] ? lock_downgrade+0x6d0/0x6d0 [ 72.942674][ T8500] __do_sys_io_uring_register+0x1185/0x4080 [ 72.948767][ T8500] ? ksys_write+0x12d/0x250 [ 72.953279][ T8500] ? lock_downgrade+0x6d0/0x6d0 [ 72.958258][ T8500] ? proc_fail_nth_write+0x95/0x220 [ 72.965310][ T8500] ? proc_task_getattr+0x1e0/0x1e0 [ 72.971323][ T8500] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.977665][ T8500] ? vfs_write+0x18e/0xa30 [ 72.982083][ T8500] ? io_file_get+0x8d0/0x8d0 [ 72.986704][ T8500] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.992719][ T8500] do_syscall_64+0x2d/0x70 [ 72.997245][ T8500] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.003606][ T8500] RIP: 0033:0x444df9 [ 73.007595][ T8500] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 db d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.027217][ T8500] RSP: 002b:00007ffeb192ade8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab [ 73.035742][ T8500] RAX: ffffffffffffffda RBX: 00007ffeb192ae90 RCX: 0000000000444df9 [ 73.043849][ T8500] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 73.051823][ T8500] RBP: 0000000000000005 R08: 0000000000000001 R09: 0000000000401140 [ 73.059791][ T8500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402860 [ 73.067756][ T8500] R13: 00000000004028f0 R14: 0000000000000000 R15: 0000000000000000 [ 73.113289][ T8500] BUG: unable to handle page fault for address: fffffffffffffffc [ 73.121021][ T8500] #PF: supervisor read access in kernel mode [ 73.127637][ T8500] #PF: error_code(0x0000) - not-present page [ 73.134057][ T8500] PGD b08f067 P4D b08f067 PUD b091067 PMD 0 [ 73.140309][ T8500] Oops: 0000 [#1] PREEMPT SMP KASAN [ 73.145497][ T8500] CPU: 0 PID: 8500 Comm: syz-executor191 Not tainted 5.11.0-rc2-syzkaller #0 [ 73.155548][ T8500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.166085][ T8500] RIP: 0010:percpu_ref_exit+0x2f/0x140 [ 73.171550][ T8500] Code: 54 55 53 48 89 fb e8 f0 fc b6 fd 48 8d 6b 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 d5 00 00 00 <4c> 8b 73 08 48 89 df e8 c5 fe ff ff 4d 85 f6 0f 84 b3 00 00 00 e8 [ 73.191967][ T8500] RSP: 0018:ffffc9000126fcc8 EFLAGS: 00010246 [ 73.201866][ T8500] RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: 0000000000000000 [ 73.209846][ T8500] RDX: 1fffffffffffffff RSI: ffffffff83bb78b0 RDI: fffffffffffffff4 [ 73.218042][ T8500] RBP: fffffffffffffffc R08: 0000000000000001 R09: ffffffff8ebda867 [ 73.226028][ T8500] R10: fffffbfff1d7b50c R11: 0000000000000000 R12: 0000000000000000 [ 73.234011][ T8500] R13: ffff88801adee000 R14: 0000000000000002 R15: fffffffffffffff4 [ 73.241968][ T8500] FS: 000000000179f940(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 73.250984][ T8500] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.257751][ T8500] CR2: fffffffffffffffc CR3: 0000000020270000 CR4: 00000000001506f0 [ 73.265883][ T8500] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.273841][ T8500] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.282161][ T8500] Call Trace: [ 73.285496][ T8500] io_sqe_files_unregister+0x30b/0x770 [ 73.291042][ T8500] __do_sys_io_uring_register+0x1185/0x4080 [ 73.297388][ T8500] ? ksys_write+0x12d/0x250 [ 73.301966][ T8500] ? lock_downgrade+0x6d0/0x6d0 [ 73.307258][ T8500] ? proc_fail_nth_write+0x95/0x220 [ 73.312470][ T8500] ? proc_task_getattr+0x1e0/0x1e0 [ 73.317585][ T8500] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.323846][ T8500] ? vfs_write+0x18e/0xa30 [ 73.328265][ T8500] ? io_file_get+0x8d0/0x8d0 [ 73.332899][ T8500] ? syscall_enter_from_user_mode+0x1d/0x50 [ 73.339087][ T8500] do_syscall_64+0x2d/0x70 [ 73.343611][ T8500] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.349509][ T8500] RIP: 0033:0x444df9 [ 73.353833][ T8500] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 db d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.374055][ T8500] RSP: 002b:00007ffeb192ade8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab [ 73.383213][ T8500] RAX: ffffffffffffffda RBX: 00007ffeb192ae90 RCX: 0000000000444df9 [ 73.396107][ T8500] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 73.404075][ T8500] RBP: 0000000000000005 R08: 0000000000000001 R09: 0000000000401140 [ 73.412055][ T8500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402860 [ 73.420208][ T8500] R13: 00000000004028f0 R14: 0000000000000000 R15: 0000000000000000 [ 73.428259][ T8500] Modules linked in: [ 73.432151][ T8500] CR2: fffffffffffffffc [ 73.436285][ T8500] ---[ end trace ed34d5d65a155c02 ]--- [ 73.441716][ T8500] RIP: 0010:percpu_ref_exit+0x2f/0x140 [ 73.447173][ T8500] Code: 54 55 53 48 89 fb e8 f0 fc b6 fd 48 8d 6b 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 d5 00 00 00 <4c> 8b 73 08 48 89 df e8 c5 fe ff ff 4d 85 f6 0f 84 b3 00 00 00 e8 [ 73.466772][ T8500] RSP: 0018:ffffc9000126fcc8 EFLAGS: 00010246 [ 73.472838][ T8500] RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: 0000000000000000 [ 73.480791][ T8500] RDX: 1fffffffffffffff RSI: ffffffff83bb78b0 RDI: fffffffffffffff4 [ 73.489321][ T8500] RBP: fffffffffffffffc R08: 0000000000000001 R09: ffffffff8ebda867 [ 73.500265][ T8500] R10: fffffbfff1d7b50c R11: 0000000000000000 R12: 0000000000000000 [ 73.511732][ T8500] R13: ffff88801adee000 R14: 0000000000000002 R15: fffffffffffffff4 [ 73.519708][ T8500] FS: 000000000179f940(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 73.528635][ T8500] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.535216][ T8500] CR2: fffffffffffffffc CR3: 0000000020270000 CR4: 00000000001506f0 [ 73.543375][ T8500] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.551487][ T8500] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.559451][ T8500] Kernel panic - not syncing: Fatal exception [ 73.566008][ T8500] Kernel Offset: disabled [ 73.570848][ T8500] Rebooting in 86400 seconds..