Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.114848][ T8400] FAULT_INJECTION: forcing a failure. [ 74.114848][ T8400] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 74.128203][ T8400] CPU: 0 PID: 8400 Comm: syz-executor278 Not tainted 5.12.0-rc4-syzkaller #0 [ 74.137317][ T8400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.147587][ T8400] Call Trace: [ 74.150878][ T8400] dump_stack+0x141/0x1d7 [ 74.155252][ T8400] should_fail.cold+0x5/0xa [ 74.159928][ T8400] __alloc_pages_nodemask+0x189/0x730 [ 74.166165][ T8400] ? __debug_object_init+0x409/0xd10 [ 74.171484][ T8400] ? __alloc_pages_slowpath.constprop.0+0x2270/0x2270 [ 74.178385][ T8400] ? debug_object_destroy+0x210/0x210 [ 74.183818][ T8400] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.190336][ T8400] ? apparmor_capable+0x1d8/0x460 [ 74.195416][ T8400] alloc_pages_current+0x18c/0x2a0 [ 74.201021][ T8400] __get_free_pages+0x8/0x40 [ 74.205710][ T8400] io_uring_setup+0xd34/0x2ae0 [ 74.210525][ T8400] ? __context_tracking_exit+0xb8/0xe0 [ 74.215992][ T8400] ? __do_sys_io_uring_enter+0x1e30/0x1e30 [ 74.222023][ T8400] ? syscall_enter_from_user_mode+0x27/0x70 [ 74.227956][ T8400] do_syscall_64+0x2d/0x70 [ 74.232404][ T8400] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.238328][ T8400] RIP: 0033:0x43ffd9 [ 74.242269][ T8400] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 74.262402][ T8400] RSP: 002b:00007ffe05a7c208 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 [ 74.271043][ T8400] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000043ffd9 [ 74.279346][ T8400] RDX: 0000000000000020 RSI: 0000000020000080 RDI: 00000000000054ca [ 74.287457][ T8400] RBP: 00007ffe05a7c220 R08: 0000000000000001 R09: 0000000000000001 [ 74.295628][ T8400] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 74.303607][ T8400] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 74.321417][ T8400] general protection fault, probably for non-canonical address 0xdffffc0000000018: 0000 [#1] PREEMPT SMP KASAN [ 74.333520][ T8400] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] [ 74.341934][ T8400] CPU: 1 PID: 8400 Comm: syz-executor278 Not tainted 5.12.0-rc4-syzkaller #0 [ 74.351254][ T8400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.362031][ T8400] RIP: 0010:io_commit_cqring+0x37f/0xc10 [ 74.367703][ T8400] Code: 74 08 3c 03 0f 8e fa 05 00 00 48 8d bb c0 00 00 00 41 8b ac 24 00 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 [ 74.387599][ T8400] RSP: 0018:ffffc90001c1fc78 EFLAGS: 00010006 [ 74.394912][ T8400] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.403188][ T8400] RDX: 0000000000000018 RSI: ffffffff81db8861 RDI: 00000000000000c0 [ 74.411218][ T8400] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 74.421443][ T8400] R10: fffff52000383f8f R11: 0000000000000000 R12: ffff888018166000 [ 74.430741][ T8400] R13: 0000000000000000 R14: 1ffff92000383fab R15: ffff8880181660c0 [ 74.439620][ T8400] FS: 00000000006c7300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.448775][ T8400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.455387][ T8400] CR2: 00007fd3db1886c0 CR3: 0000000021099000 CR4: 00000000001506e0 [ 74.468635][ T8400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.476641][ T8400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.484745][ T8400] Call Trace: [ 74.488397][ T8400] io_kill_timeouts+0x2b5/0x320 [ 74.493364][ T8400] io_ring_ctx_wait_and_kill+0x1da/0x400 [ 74.499141][ T8400] ? io_iopoll_try_reap_events.part.0+0x220/0x220 [ 74.505601][ T8400] ? alloc_pages_current+0x194/0x2a0 [ 74.510995][ T8400] io_uring_setup+0x10da/0x2ae0 [ 74.515876][ T8400] ? __context_tracking_exit+0xb8/0xe0 [ 74.521441][ T8400] ? __do_sys_io_uring_enter+0x1e30/0x1e30 [ 74.527621][ T8400] ? syscall_enter_from_user_mode+0x27/0x70 [ 74.534071][ T8400] do_syscall_64+0x2d/0x70 [ 74.538513][ T8400] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.544451][ T8400] RIP: 0033:0x43ffd9 [ 74.548886][ T8400] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 74.569423][ T8400] RSP: 002b:00007ffe05a7c208 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 [ 74.577899][ T8400] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000043ffd9 [ 74.585910][ T8400] RDX: 0000000000000020 RSI: 0000000020000080 RDI: 00000000000054ca [ 74.593984][ T8400] RBP: 00007ffe05a7c220 R08: 0000000000000001 R09: 0000000000000001 [ 74.602074][ T8400] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 74.610150][ T8400] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 74.618313][ T8400] Modules linked in: [ 74.622258][ T8400] ---[ end trace a0b1f0cfec9b9808 ]--- [ 74.627821][ T8400] RIP: 0010:io_commit_cqring+0x37f/0xc10 [ 74.633517][ T8400] Code: 74 08 3c 03 0f 8e fa 05 00 00 48 8d bb c0 00 00 00 41 8b ac 24 00 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 [ 74.653588][ T8400] RSP: 0018:ffffc90001c1fc78 EFLAGS: 00010006 [ 74.659670][ T8400] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.667664][ T8400] RDX: 0000000000000018 RSI: ffffffff81db8861 RDI: 00000000000000c0 [ 74.675651][ T8400] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 74.683921][ T8400] R10: fffff52000383f8f R11: 0000000000000000 R12: ffff888018166000 [ 74.691906][ T8400] R13: 0000000000000000 R14: 1ffff92000383fab R15: ffff8880181660c0 [ 74.699910][ T8400] FS: 00000000006c7300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.708871][ T8400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.715475][ T8400] CR2: 00007fd3db1886c0 CR3: 0000000021099000 CR4: 00000000001506e0 [ 74.723458][ T8400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.731439][ T8400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.739537][ T8400] Kernel panic - not syncing: Fatal exception [ 74.746191][ T8400] Kernel Offset: disabled [ 74.750538][ T8400] Rebooting in 86400 seconds..