[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 47.489796][ T8812] general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN [ 47.501637][ T8812] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 47.510050][ T8812] CPU: 1 PID: 8812 Comm: iou-sqp-8804 Not tainted 5.14.0-syzkaller #0 [ 47.518213][ T8812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.528267][ T8812] RIP: 0010:__io_arm_poll_handler+0x2fa/0xb10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.534347][ T8812] Code: 24 38 42 80 3c 20 00 74 08 48 89 ef e8 df 15 db ff 48 8b 6d 00 48 8d 5d 28 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 b8 15 db ff 4c 8b 23 49 83 c4 48 4c [ 47.554172][ T8812] RSP: 0018:ffffc90001e7f0a8 EFLAGS: 00010206 [ 47.560341][ T8812] RAX: 0000000000000005 RBX: 0000000000000028 RCX: dffffc0000000000 [ 47.568316][ T8812] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90001e7f1f0 [ 47.576299][ T8812] RBP: 0000000000000000 R08: dffffc0000000000 R09: ffff88801252e820 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.584535][ T8812] R10: ffffed10024a5d06 R11: 0000000000000000 R12: dffffc0000000000 [ 47.592512][ T8812] R13: 1ffff920003cfe3f R14: ffffc90001e7f1fc R15: ffffc90001e7f1f8 [ 47.600497][ T8812] FS: 00007f6951c24700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 47.609435][ T8812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.616020][ T8812] CR2: 000000000049a01d CR3: 000000002b182000 CR4: 00000000001506e0 [ 47.623997][ T8812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.631978][ T8812] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.640559][ T8812] Call Trace: [ 47.643845][ T8812] io_poll_add+0xf1/0x590 [ 47.648194][ T8812] ? io_write+0xb90/0xb90 [ 47.652530][ T8812] ? trace_lock_release+0x4f/0x150 [ 47.657650][ T8812] ? io_recvmsg_copy_hdr+0x710/0x710 [ 47.662949][ T8812] ? read_lock_is_recursive+0x10/0x10 [ 47.668329][ T8812] io_issue_sqe+0x192b/0x9280 [ 47.673016][ T8812] ? do_raw_spin_unlock+0x134/0x8a0 [ 47.678218][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.683858][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.689500][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.695494][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.701144][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.707128][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.712778][ T8812] ? __io_queue_sqe+0x1000/0x1000 [ 47.717811][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.723454][ T8812] ? trace_lock_release+0x4f/0x150 [ 47.728580][ T8812] ? lock_release+0x81/0x7b0 [ 47.733179][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.738821][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.744812][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.750464][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.756479][ T8812] ? kvm_sched_clock_read+0x15/0x40 [ 47.761699][ T8812] ? sched_clock_cpu+0x15/0x3c0 [ 47.766562][ T8812] ? cpumask_next_wrap+0x152/0x170 [ 47.771687][ T8812] ? trace_lock_release+0x4f/0x150 [ 47.776807][ T8812] ? lock_release+0x81/0x7b0 [ 47.781406][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.787074][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.793149][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.798789][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.804775][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.810415][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.816401][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.822050][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.828132][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.833774][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.839777][ T8812] ? trace_lock_release+0x4f/0x150 [ 47.844898][ T8812] ? lock_release+0x81/0x7b0 [ 47.849520][ T8812] ? read_lock_is_recursive+0x10/0x10 [ 47.854899][ T8812] ? __lock_acquire+0x6100/0x6100 [ 47.859964][ T8812] ? __lock_acquire+0x6100/0x6100 [ 47.864993][ T8812] ? print_irqtrace_events+0x220/0x220 [ 47.870466][ T8812] ? do_raw_spin_unlock+0x134/0x8a0 [ 47.875676][ T8812] ? finish_task_switch+0x3f5/0x630 [ 47.880882][ T8812] ? finish_lock_switch+0xee/0x1c0 [ 47.886016][ T8812] ? finish_lock_switch+0xee/0x1c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.891137][ T8812] ? finish_task_switch+0x140/0x630 [ 47.896433][ T8812] ? __schedule+0xc05/0x11d0 [ 47.901045][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.906690][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.912681][ T8812] ? trace_lock_release+0x4f/0x150 [ 47.917800][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.923530][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.929520][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.935174][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.941164][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.946809][ T8812] ? rcu_read_lock_sched_held+0x5d/0x110 [ 47.952452][ T8812] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 47.958447][ T8812] ? rcu_lock_acquire+0x5/0x30 [ 47.963233][ T8812] __io_queue_sqe+0xe3/0x1000 [ 47.967915][ T8812] ? read_lock_is_recursive+0x10/0x10 [ 47.973296][ T8812] ? __lock_acquire+0x6100/0x6100 [ 47.978332][ T8812] ? __lock_acquire+0x6100/0x6100 [ 47.983362][ T8812] ? io_req_task_submit+0x190/0x190 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.988570][ T8812] ? _raw_spin_lock_irq+0xba/0xf0 [ 47.993609][ T8812] tctx_task_work+0x2ad/0x560 [ 47.998295][ T8812] ? io_uring_alloc_task_context+0x620/0x620 [ 48.004284][ T8812] ? do_raw_spin_unlock+0x134/0x8a0 [ 48.009492][ T8812] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.014698][ T8812] task_work_run+0x146/0x1c0 [ 48.019296][ T8812] io_run_task_work+0x110/0x140 [ 48.024157][ T8812] io_sq_thread+0xb5e/0x1220 [ 48.028756][ T8812] ? io_fallback_req_func+0x270/0x270 [ 48.034138][ T8812] ? lock_release+0x81/0x7b0 executing program executing program executing program executing program executing program executing program executing program executing program [ 48.038737][ T8812] ? __rwlock_init+0x140/0x140 [ 48.043511][ T8812] ? __lock_acquire+0x6100/0x6100 [ 48.048543][ T8812] ? init_wait_entry+0xd0/0xd0 [ 48.053322][ T8812] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.058535][ T8812] ? io_fallback_req_func+0x270/0x270 [ 48.063918][ T8812] ret_from_fork+0x1f/0x30 [ 48.068354][ T8812] Modules linked in: [ 48.080563][ T8812] ---[ end trace 65dffd9e454d7c44 ]--- executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.087993][ T8812] RIP: 0010:__io_arm_poll_handler+0x2fa/0xb10 [ 48.095712][ T8812] Code: 24 38 42 80 3c 20 00 74 08 48 89 ef e8 df 15 db ff 48 8b 6d 00 48 8d 5d 28 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 b8 15 db ff 4c 8b 23 49 83 c4 48 4c executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.177979][ T8812] RSP: 0018:ffffc90001e7f0a8 EFLAGS: 00010206 [ 48.189784][ T8812] RAX: 0000000000000005 RBX: 0000000000000028 RCX: dffffc0000000000 [ 48.203719][ T8812] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90001e7f1f0 [ 48.218717][ T8812] RBP: 0000000000000000 R08: dffffc0000000000 R09: ffff88801252e820 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.252604][ T8812] R10: ffffed10024a5d06 R11: 0000000000000000 R12: dffffc0000000000 [ 48.269546][ T8812] R13: 1ffff920003cfe3f R14: ffffc90001e7f1fc R15: ffffc90001e7f1f8 [ 48.281391][ T8812] FS: 00007f6951c24700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.307632][ T8812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.321615][ T8812] CR2: 00007ffd472d29c0 CR3: 000000002b182000 CR4: 00000000001506f0 [ 48.342452][ T8812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 executing program executing program executing program executing program executing program executing program [ 48.373149][ T8812] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.389955][ T8812] Kernel panic - not syncing: Fatal exception [ 48.397640][ T8812] Kernel Offset: disabled [ 48.402073][ T8812] Rebooting in 86400 seconds..