[ 37.769949][ T27] audit: type=1800 audit(1554957194.147:27): pid=7610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.792299][ T27] audit: type=1800 audit(1554957194.147:28): pid=7610 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. [ 38.480530][ T27] audit: type=1800 audit(1554957194.927:29): pid=7610 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 [ 38.500986][ T27] audit: type=1800 audit(1554957194.927:30): pid=7610 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 '10.128.0.156' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 69.379561][ T8708] WARNING: CPU: 0 PID: 8708 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 [ 69.389377][ T8708] Kernel panic - not syncing: panic_on_warn set ... [ 69.396040][ T8708] CPU: 0 PID: 8708 Comm: syz-executor517 Not tainted 5.1.0-rc4-next-20190410 #22 [ 69.405128][ T8708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.415171][ T8708] Call Trace: [ 69.418457][ T8708] dump_stack+0x172/0x1f0 [ 69.422773][ T8708] ? perf_group_attach+0x330/0x4d0 [ 69.427871][ T8708] panic+0x2cb/0x72b [ 69.431754][ T8708] ? __warn_printk+0xf3/0xf3 [ 69.436336][ T8708] ? perf_group_attach+0x3fd/0x4d0 [ 69.441440][ T8708] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.447688][ T8708] ? __warn.cold+0x5/0x46 [ 69.452025][ T8708] ? __warn+0xe8/0x1d0 [ 69.456204][ T8708] ? perf_group_attach+0x3fd/0x4d0 [ 69.461324][ T8708] __warn.cold+0x20/0x46 [ 69.465571][ T8708] ? perf_group_attach+0x3fd/0x4d0 [ 69.470717][ T8708] report_bug+0x263/0x2b0 [ 69.475057][ T8708] do_error_trap+0x11b/0x200 [ 69.479655][ T8708] do_invalid_op+0x37/0x50 [ 69.484076][ T8708] ? perf_group_attach+0x3fd/0x4d0 [ 69.489189][ T8708] invalid_op+0x14/0x20 [ 69.493344][ T8708] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 69.499057][ T8708] 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 c3 5a eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 98 9d 5f 89 e8 a0 63 24 00 e9 5b fc [ 69.518663][ T8708] RSP: 0018:ffff88808a8cfa90 EFLAGS: 00010093 [ 69.524733][ T8708] RAX: ffff88808b1d6280 RBX: ffff8880a54025c0 RCX: ffffffff81852aa8 [ 69.532706][ T8708] RDX: 0000000000000000 RSI: ffffffff81852dcd RDI: ffff8880a54027d8 [ 69.540684][ T8708] RBP: ffff88808a8cfac0 R08: ffff88808b1d6280 R09: ffffffff899d0008 [ 69.548658][ T8708] R10: ffffffff899d0010 R11: 0000000000000001 R12: ffff8880a595c580 [ 69.556641][ T8708] R13: ffffe8ffffc13bb8 R14: 0000000000000000 R15: ffff8880ae8321c8 [ 69.564659][ T8708] ? perf_group_attach+0xd8/0x4d0 [ 69.569694][ T8708] ? perf_group_attach+0x3fd/0x4d0 [ 69.574815][ T8708] __perf_install_in_context+0x4b5/0x960 [ 69.580453][ T8708] ? __perf_event_enable+0x920/0x920 [ 69.585743][ T8708] ? perf_duration_warn+0x40/0x40 [ 69.590768][ T8708] remote_function+0x12b/0x1a0 [ 69.595541][ T8708] generic_exec_single+0x284/0x4b0 [ 69.600661][ T8708] smp_call_function_single+0x12d/0x420 [ 69.606220][ T8708] ? _raw_spin_unlock+0x2d/0x50 [ 69.611072][ T8708] ? perf_duration_warn+0x40/0x40 [ 69.616103][ T8708] ? generic_exec_single+0x4b0/0x4b0 [ 69.621394][ T8708] ? __do_sys_perf_event_open+0x1a5b/0x24e0 [ 69.627310][ T8708] perf_install_in_context+0x369/0x3d0 [ 69.632785][ T8708] ? list_add_event+0xcd0/0xcd0 [ 69.637659][ T8708] ? __perf_event_enable+0x920/0x920 [ 69.642967][ T8708] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.649319][ T8708] __do_sys_perf_event_open+0x1858/0x24e0 [ 69.655156][ T8708] ? perf_event_set_output+0x4e0/0x4e0 [ 69.660644][ T8708] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.666116][ T8708] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.671582][ T8708] ? do_syscall_64+0x26/0x610 [ 69.676470][ T8708] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.682543][ T8708] ? do_syscall_64+0x26/0x610 [ 69.687230][ T8708] __x64_sys_perf_event_open+0xbe/0x150 [ 69.692803][ T8708] do_syscall_64+0x103/0x610 [ 69.697397][ T8708] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.703287][ T8708] RIP: 0033:0x448ef9 [ 69.707185][ T8708] 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 [ 69.726814][ T8708] RSP: 002b:00007fc8aa3c6ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 69.735325][ T8708] RAX: ffffffffffffffda RBX: 00000000006dec28 RCX: 0000000000448ef9 [ 69.743302][ T8708] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000 [ 69.751296][ T8708] RBP: 00000000006dec20 R08: 0000000000000000 R09: 0000000000000000 [ 69.759271][ T8708] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dec2c [ 69.767253][ T8708] R13: 00007ffd47ddd9bf R14: 00007fc8aa3c79c0 R15: 20c49ba5e353f7cf [ 69.776332][ T8708] Kernel Offset: disabled [ 69.780829][ T8708] Rebooting in 86400 seconds..