[ 33.428890][ T26] audit: type=1800 audit(1553034750.010:28): pid=7384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. [ 34.258749][ T26] audit: type=1800 audit(1553034750.920:29): pid=7384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 34.278963][ T26] audit: type=1800 audit(1553034750.920:30): pid=7384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.208' (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 syzkaller login: [ 64.613363][ T8062] WARNING: CPU: 0 PID: 8062 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 [ 64.623374][ T8062] Kernel panic - not syncing: panic_on_warn set ... [ 64.630076][ T8062] CPU: 0 PID: 8062 Comm: syz-executor062 Not tainted 5.1.0-rc1-next-20190319 #6 [ 64.639597][ T8062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.649990][ T8062] Call Trace: [ 64.653283][ T8062] dump_stack+0x172/0x1f0 [ 64.657867][ T8062] ? perf_group_attach+0x3d0/0x4d0 [ 64.663482][ T8062] panic+0x2cb/0x65c [ 64.667391][ T8062] ? __warn_printk+0xf3/0xf3 [ 64.672010][ T8062] ? perf_group_attach+0x3fd/0x4d0 [ 64.677125][ T8062] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.684868][ T8062] ? __warn.cold+0x5/0x45 [ 64.689456][ T8062] ? __warn+0xe8/0x1d0 [ 64.693514][ T8062] ? perf_group_attach+0x3fd/0x4d0 [ 64.698712][ T8062] __warn.cold+0x20/0x45 [ 64.703751][ T8062] ? perf_group_attach+0x3fd/0x4d0 [ 64.709200][ T8062] report_bug+0x263/0x2b0 [ 64.713693][ T8062] do_error_trap+0x11b/0x200 [ 64.718393][ T8062] do_invalid_op+0x37/0x50 [ 64.723415][ T8062] ? perf_group_attach+0x3fd/0x4d0 [ 64.728522][ T8062] invalid_op+0x14/0x20 [ 64.732689][ T8062] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 64.738856][ T8062] Code: ff 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 80 3c 28 00 75 57 48 8b 5b 10 48 83 eb 10 49 39 dc 75 d4 e9 20 ff ff ff e8 d3 b7 eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 78 ad 5e 89 e8 d0 cd 23 00 e9 5b fc [ 64.759333][ T8062] RSP: 0018:ffff88808f507a90 EFLAGS: 00010093 [ 64.765390][ T8062] RAX: ffff88808e3f4000 RBX: ffff88808de0e100 RCX: ffffffff8184df08 [ 64.774866][ T8062] RDX: 0000000000000000 RSI: ffffffff8184e22d RDI: ffff88808de0e318 [ 64.782828][ T8062] RBP: ffff88808f507ac0 R08: ffff88808e3f4000 R09: ffffffff899bf008 [ 64.790790][ T8062] R10: ffffffff899bf010 R11: 0000000000000001 R12: ffff88808de0f200 [ 64.798751][ T8062] R13: ffffe8ffffc13780 R14: 0000000000000000 R15: ffff8880ae832048 [ 64.806726][ T8062] ? perf_group_attach+0xd8/0x4d0 [ 64.811738][ T8062] ? perf_group_attach+0x3fd/0x4d0 [ 64.816847][ T8062] __perf_install_in_context+0x4b5/0x960 [ 64.822466][ T8062] ? __perf_event_enable+0x920/0x920 [ 64.827739][ T8062] ? perf_duration_warn+0x40/0x40 [ 64.832749][ T8062] remote_function+0x12b/0x1a0 [ 64.837981][ T8062] generic_exec_single+0x284/0x4b0 [ 64.843084][ T8062] smp_call_function_single+0x12d/0x420 [ 64.848618][ T8062] ? _raw_spin_unlock+0x2d/0x50 [ 64.853457][ T8062] ? perf_duration_warn+0x40/0x40 [ 64.858475][ T8062] ? generic_exec_single+0x4b0/0x4b0 [ 64.863748][ T8062] ? __do_sys_perf_event_open+0x1a5b/0x24e0 [ 64.869637][ T8062] perf_install_in_context+0x369/0x3d0 [ 64.875092][ T8062] ? list_add_event+0xcd0/0xcd0 [ 64.879928][ T8062] ? __perf_event_enable+0x920/0x920 [ 64.885201][ T8062] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 64.891430][ T8062] __do_sys_perf_event_open+0x1858/0x24e0 [ 64.897143][ T8062] ? perf_event_set_output+0x4e0/0x4e0 [ 64.902598][ T8062] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 64.908040][ T8062] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 64.913484][ T8062] ? do_syscall_64+0x26/0x610 [ 64.918150][ T8062] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.924205][ T8062] ? do_syscall_64+0x26/0x610 [ 64.928874][ T8062] __x64_sys_perf_event_open+0xbe/0x150 [ 64.934411][ T8062] do_syscall_64+0x103/0x610 [ 64.938992][ T8062] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.944868][ T8062] RIP: 0033:0x446a69 [ 64.948746][ T8062] 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.968335][ T8062] RSP: 002b:00007fdb65210db8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 64.976733][ T8062] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446a69 [ 64.984691][ T8062] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 64.992649][ T8062] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 65.000613][ T8062] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc2c [ 65.008573][ T8062] R13: 00007ffd401b98df R14: 00007fdb652119c0 R15: 000000000000002d [ 65.017791][ T8062] Kernel Offset: disabled [ 65.022207][ T8062] Rebooting in 86400 seconds..