[ 38.191549][ T26] audit: type=1800 audit(1555079014.164:27): pid=7432 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.214321][ T26] audit: type=1800 audit(1555079014.164:28): pid=7432 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. [ 39.190546][ T26] audit: type=1800 audit(1555079015.224:29): pid=7432 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 [ 39.215445][ T26] audit: type=1800 audit(1555079015.224:30): pid=7432 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 '10.128.0.16' (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 syzkaller login: [ 66.224512][ T7948] WARNING: CPU: 0 PID: 7948 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 [ 66.234861][ T7948] Kernel panic - not syncing: panic_on_warn set ... [ 66.241457][ T7948] CPU: 0 PID: 7948 Comm: syz-executor793 Not tainted 5.1.0-rc4+ #63 [ 66.249418][ T7948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.260119][ T7948] Call Trace: [ 66.263850][ T7948] dump_stack+0x172/0x1f0 [ 66.268538][ T7948] ? perf_group_attach+0x340/0x4d0 [ 66.274006][ T7948] panic+0x2cb/0x65c [ 66.278136][ T7948] ? __warn_printk+0xf3/0xf3 [ 66.282899][ T7948] ? perf_group_attach+0x3fd/0x4d0 [ 66.288213][ T7948] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 66.294728][ T7948] ? __warn.cold+0x5/0x45 [ 66.299062][ T7948] ? __warn+0xe8/0x1d0 [ 66.303279][ T7948] ? perf_group_attach+0x3fd/0x4d0 [ 66.308750][ T7948] __warn.cold+0x20/0x45 [ 66.313146][ T7948] ? perf_group_attach+0x3fd/0x4d0 [ 66.318260][ T7948] report_bug+0x263/0x2b0 [ 66.323672][ T7948] do_error_trap+0x11b/0x200 [ 66.329604][ T7948] do_invalid_op+0x37/0x50 [ 66.335240][ T7948] ? perf_group_attach+0x3fd/0x4d0 [ 66.342058][ T7948] invalid_op+0x14/0x20 [ 66.349219][ T7948] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 66.357453][ T7948] 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 43 b4 eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 18 61 5e 89 e8 c0 bb 23 00 e9 5b fc [ 66.380534][ T7948] RSP: 0018:ffff88808da6fa90 EFLAGS: 00010093 [ 66.387159][ T7948] RAX: ffff88808d832680 RBX: ffff88808d16b600 RCX: ffffffff8184d798 [ 66.397135][ T7948] RDX: 0000000000000000 RSI: ffffffff8184dabd RDI: ffff88808d16b818 [ 66.408409][ T7948] RBP: ffff88808da6fac0 R08: ffff88808d832680 R09: ffffffff899ba008 [ 66.418515][ T7948] R10: ffffffff899ba010 R11: 0000000000000001 R12: ffff88808d65e440 [ 66.426874][ T7948] R13: ffffe8ffffc13780 R14: 0000000000000000 R15: ffff8880ae832048 [ 66.438040][ T7948] ? perf_group_attach+0xd8/0x4d0 [ 66.443948][ T7948] ? perf_group_attach+0x3fd/0x4d0 [ 66.449883][ T7948] __perf_install_in_context+0x4b5/0x960 [ 66.455994][ T7948] ? __perf_event_enable+0x920/0x920 [ 66.462089][ T7948] ? perf_duration_warn+0x40/0x40 [ 66.467116][ T7948] remote_function+0x12b/0x1a0 [ 66.473568][ T7948] generic_exec_single+0x284/0x4b0 [ 66.479455][ T7948] smp_call_function_single+0x12d/0x420 [ 66.486180][ T7948] ? _raw_spin_unlock+0x2d/0x50 [ 66.494407][ T7948] ? perf_duration_warn+0x40/0x40 [ 66.499581][ T7948] ? generic_exec_single+0x4b0/0x4b0 [ 66.505712][ T7948] ? __do_sys_perf_event_open+0x1a5b/0x24e0 [ 66.511798][ T7948] perf_install_in_context+0x369/0x3d0 [ 66.520598][ T7948] ? list_add_event+0xcd0/0xcd0 [ 66.526522][ T7948] ? __perf_event_enable+0x920/0x920 [ 66.533333][ T7948] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 66.539576][ T7948] __do_sys_perf_event_open+0x1858/0x24e0 [ 66.546004][ T7948] ? perf_event_set_output+0x4e0/0x4e0 [ 66.552815][ T7948] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 66.558746][ T7948] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 66.566321][ T7948] ? do_syscall_64+0x26/0x610 [ 66.571447][ T7948] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 66.578806][ T7948] ? do_syscall_64+0x26/0x610 [ 66.583503][ T7948] __x64_sys_perf_event_open+0xbe/0x150 [ 66.589807][ T7948] do_syscall_64+0x103/0x610 [ 66.594687][ T7948] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 66.601576][ T7948] RIP: 0033:0x446a79 [ 66.606480][ T7948] 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 [ 66.629884][ T7948] RSP: 002b:00007ff748e27db8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 66.639751][ T7948] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446a79 [ 66.648162][ T7948] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 66.656846][ T7948] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 66.665695][ T7948] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc2c [ 66.673923][ T7948] R13: 00007ffe139cbe1f R14: 00007ff748e289c0 R15: 000000000000002d [ 66.684176][ T7948] Kernel Offset: disabled [ 66.688998][ T7948] Rebooting in 86400 seconds..