[ 34.379774] audit: type=1800 audit(1552282159.937:27): pid=7467 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.399442] audit: type=1800 audit(1552282159.937:28): pid=7467 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. [ 34.942895] audit: type=1800 audit(1552282160.567:29): pid=7467 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 [ 34.962415] audit: type=1800 audit(1552282160.567:30): pid=7467 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.30' (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 syzkaller login: [ 67.149276] WARNING: CPU: 0 PID: 7725 at kernel/events/core.c:1833 perf_group_attach+0x3fd/0x4d0 [ 67.158339] Kernel panic - not syncing: panic_on_warn set ... [ 67.164226] CPU: 0 PID: 7725 Comm: syz-executor869 Not tainted 5.0.0+ #60 [ 67.171246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.180578] Call Trace: [ 67.183151] dump_stack+0x172/0x1f0 [ 67.188155] ? perf_group_attach+0x3c0/0x4d0 [ 67.192614] panic+0x2cb/0x65c [ 67.195802] ? __warn_printk+0xf3/0xf3 [ 67.199816] ? perf_group_attach+0x3fd/0x4d0 [ 67.204329] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.209857] ? __warn.cold+0x5/0x45 [ 67.213534] ? __warn+0xe8/0x1d0 [ 67.216893] ? perf_group_attach+0x3fd/0x4d0 [ 67.221284] __warn.cold+0x20/0x45 [ 67.224808] ? perf_group_attach+0x3fd/0x4d0 [ 67.229207] report_bug+0x263/0x2b0 [ 67.232828] do_error_trap+0x11b/0x200 [ 67.236702] do_invalid_op+0x37/0x50 [ 67.240401] ? perf_group_attach+0x3fd/0x4d0 [ 67.244789] invalid_op+0x14/0x20 [ 67.248222] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 67.253217] 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 33 c0 eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 58 f6 5c 89 e8 20 59 23 00 e9 5b fc [ 67.272099] RSP: 0018:ffff88808e8bfa90 EFLAGS: 00010093 [ 67.277452] RAX: ffff88808dd401c0 RBX: ffff88808d85e980 RCX: ffffffff8183f318 [ 67.284702] RDX: 0000000000000000 RSI: ffffffff8183f63d RDI: ffff88808d85eb98 [ 67.291974] RBP: ffff88808e8bfac0 R08: ffff88808dd401c0 R09: ffffffff8999c008 [ 67.299231] R10: ffffffff8999c010 R11: 0000000000000001 R12: ffff88808d1f8040 [ 67.306483] R13: ffffe8ffffc12f88 R14: 0000000000000000 R15: ffff8880ae832048 [ 67.313744] ? perf_group_attach+0xd8/0x4d0 [ 67.318047] ? perf_group_attach+0x3fd/0x4d0 [ 67.323570] __perf_install_in_context+0x4b5/0x960 [ 67.328515] ? __perf_event_enable+0x920/0x920 [ 67.333081] ? perf_duration_warn+0x40/0x40 [ 67.337388] remote_function+0x12b/0x1a0 [ 67.341546] generic_exec_single+0x284/0x4b0 [ 67.345969] smp_call_function_single+0x12d/0x420 [ 67.350827] ? perf_duration_warn+0x40/0x40 [ 67.355147] ? generic_exec_single+0x4b0/0x4b0 [ 67.359711] perf_install_in_context+0x369/0x3d0 [ 67.364441] ? list_add_event+0xcd0/0xcd0 [ 67.368569] ? __perf_event_enable+0x920/0x920 [ 67.373136] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.378677] __do_sys_perf_event_open+0x1998/0x2730 [ 67.383679] ? perf_event_set_output+0x4e0/0x4e0 [ 67.388468] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 67.393206] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 67.397940] ? do_syscall_64+0x26/0x610 [ 67.401900] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.407239] ? do_syscall_64+0x26/0x610 [ 67.411202] __x64_sys_perf_event_open+0xbe/0x150 [ 67.416045] do_syscall_64+0x103/0x610 [ 67.419914] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.425082] RIP: 0033:0x446e39 [ 67.428251] Code: e8 dc e6 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 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 67.447135] RSP: 002b:00007f2b851eadb8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 67.454825] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000446e39 [ 67.462083] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 67.469389] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 67.476654] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dcc2c [ 67.483905] R13: 00007ffe55d796cf R14: 00007f2b851eb9c0 R15: 20c49ba5e353f7cf [ 67.491979] Kernel Offset: disabled [ 67.495664] Rebooting in 86400 seconds..