[ 30.039870] audit: type=1800 audit(1543885741.727:27): pid=5947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 30.059778] audit: type=1800 audit(1543885741.737:28): pid=5947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 30.812420] audit: type=1800 audit(1543885742.557:29): pid=5947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 30.832599] audit: type=1800 audit(1543885742.567:30): pid=5947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.744321] sshd (6085) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.15.230' (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 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 [ 87.832846] WARNING: CPU: 0 PID: 6607 at kernel/events/core.c:1833 perf_group_attach+0x4c1/0x5a0 [ 87.841910] Kernel panic - not syncing: panic_on_warn set ... [ 87.847787] CPU: 0 PID: 6607 Comm: syz-executor062 Not tainted 4.20.0-rc5+ #141 [ 87.855218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.864557] Call Trace: [ 87.867220] dump_stack+0x244/0x39d [ 87.870844] ? dump_stack_print_info.cold.1+0x20/0x20 [ 87.876035] panic+0x2ad/0x55c [ 87.879281] ? add_taint.cold.5+0x16/0x16 [ 87.883427] ? __warn.cold.8+0x5/0x45 [ 87.887212] ? __warn+0xe8/0x1d0 [ 87.890574] ? perf_group_attach+0x4c1/0x5a0 [ 87.895097] __warn.cold.8+0x20/0x45 [ 87.898799] ? rcu_softirq_qs+0x20/0x20 [ 87.902758] ? perf_group_attach+0x4c1/0x5a0 [ 87.907161] report_bug+0x254/0x2d0 [ 87.910775] do_error_trap+0x11b/0x200 [ 87.914756] do_invalid_op+0x36/0x40 [ 87.918458] ? perf_group_attach+0x4c1/0x5a0 [ 87.922918] invalid_op+0x14/0x20 [ 87.926403] RIP: 0010:perf_group_attach+0x4c1/0x5a0 [ 87.931413] Code: 8d 7c 24 10 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 51 4d 8b 64 24 10 49 83 ec 10 4c 39 e3 75 d2 e9 f8 fe ff ff e8 7f ad e9 ff <0f> 0b e9 e0 fc ff ff e8 73 06 2d 00 e9 ea fb ff ff e8 69 06 2d 00 [ 87.950346] RSP: 0018:ffff8881cbf8f5f8 EFLAGS: 00010093 [ 87.955706] RAX: ffff8881bb87c440 RBX: ffff8881bb6db240 RCX: ffffffff8195eaa6 [ 87.962966] RDX: 0000000000000000 RSI: ffffffff8195ee41 RDI: ffff8881bb10e398 [ 87.970222] RBP: ffff8881cbf8f690 R08: ffff8881bb87c440 R09: 0000000000000006 [ 87.977535] R10: fffffbfff14a7201 R11: 0000000000000001 R12: ffff8881bb10e180 [ 87.984799] R13: 1ffff110397f1ec1 R14: ffffe8ffffc13098 R15: 0000000000000000 [ 87.992175] ? perf_group_attach+0x126/0x5a0 [ 87.996572] ? perf_group_attach+0x4c1/0x5a0 [ 88.000977] ? perf_group_attach+0x4c1/0x5a0 [ 88.005411] ? perf_mux_hrtimer_restart+0x270/0x270 [ 88.010423] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.015945] ? ctx_sched_out+0x169/0xa20 [ 88.019993] __perf_install_in_context+0x5bd/0xb70 [ 88.024918] ? __perf_event_enable+0x910/0x910 [ 88.029492] ? trace_hardirqs_off+0xb8/0x310 [ 88.033885] ? debug_mutex_wake_waiter+0x630/0x630 [ 88.038797] ? mutex_destroy+0x200/0x200 [ 88.042845] ? smp_call_function_single+0x25a/0x660 [ 88.047852] ? trace_hardirqs_on+0x310/0x310 [ 88.052248] ? __perf_event_enable+0x910/0x910 [ 88.056813] ? perf_duration_warn+0x40/0x40 [ 88.061124] remote_function+0x12b/0x1a0 [ 88.065173] generic_exec_single+0x379/0x5f0 [ 88.069630] ? smp_call_on_cpu+0x560/0x560 [ 88.073859] ? mutex_trylock+0x2b0/0x2b0 [ 88.077910] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.083436] ? check_preemption_disabled+0x48/0x280 [ 88.088440] smp_call_function_single+0x25a/0x660 [ 88.093266] ? perf_duration_warn+0x40/0x40 [ 88.097574] ? check_preemption_disabled+0x48/0x280 [ 88.102586] ? generic_exec_single+0x5f0/0x5f0 [ 88.107155] ? errseq_sample+0xe5/0x130 [ 88.111111] ? _copy_to_user+0x110/0x110 [ 88.115159] ? __lock_is_held+0xb5/0x140 [ 88.119212] perf_install_in_context+0x46c/0x510 [ 88.123955] ? list_add_event+0x1250/0x1250 [ 88.128261] ? __perf_event_enable+0x910/0x910 [ 88.132831] ? perf_pin_task_context+0x130/0x130 [ 88.137571] ? get_unused_fd_flags+0x122/0x1a0 [ 88.142143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.147663] ? __perf_event_header_size.isra.38+0x15f/0x1b0 [ 88.153363] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.158908] __do_sys_perf_event_open+0x1fa5/0x3020 [ 88.163929] ? perf_event_set_output+0x650/0x650 [ 88.168674] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 88.173607] ? kasan_check_read+0x11/0x20 [ 88.177757] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 88.183069] ? rcu_softirq_qs+0x20/0x20 [ 88.187078] ? trace_hardirqs_off_caller+0x310/0x310 [ 88.192175] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.197706] ? up_read+0x225/0x2c0 [ 88.201239] ? __x64_sys_futex+0x47f/0x6a0 [ 88.205458] ? do_syscall_64+0x9a/0x820 [ 88.209422] ? do_syscall_64+0x9a/0x820 [ 88.213384] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 88.217954] ? trace_hardirqs_on+0xbd/0x310 [ 88.222265] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.227618] ? trace_hardirqs_off_caller+0x310/0x310 [ 88.232715] __x64_sys_perf_event_open+0xbe/0x150 [ 88.237551] do_syscall_64+0x1b9/0x820 [ 88.241423] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 88.246772] ? syscall_return_slowpath+0x5e0/0x5e0 [ 88.251685] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 88.256517] ? trace_hardirqs_on_caller+0x310/0x310 [ 88.261527] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 88.266530] ? prepare_exit_to_usermode+0x291/0x3b0 [ 88.271535] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 88.276366] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.281542] RIP: 0033:0x446619 [ 88.284728] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 7b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 88.303622] RSP: 002b:00007fef7efd3db8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 88.311324] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446619 [ 88.318592] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 88.325848] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 88.333107] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc2c [ 88.340365] R13: 00007ffca90267df R14: 00007fef7efd49c0 R15: 00000000006dbc20 [ 88.348761] Kernel Offset: disabled [ 88.352454] Rebooting in 86400 seconds..