[ 35.682130][ T26] audit: type=1800 audit(1555328323.427:28): pid=7516 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. [ 36.593392][ T26] audit: type=1800 audit(1555328324.417:29): pid=7516 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 36.612773][ T26] audit: type=1800 audit(1555328324.417:30): pid=7516 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: rsyslog ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.661662][ T7690] WARNING: CPU: 1 PID: 7690 at include/linux/cpumask.h:121 io_uring_setup+0x13cd/0x1a30 [ 73.671507][ T7690] Kernel panic - not syncing: panic_on_warn set ... [ 73.678094][ T7690] CPU: 1 PID: 7690 Comm: syz-executor094 Not tainted 5.1.0-rc5 #68 [ 73.686192][ T7690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.696344][ T7690] Call Trace: [ 73.699839][ T7690] dump_stack+0x172/0x1f0 [ 73.704160][ T7690] ? io_uring_setup+0x1390/0x1a30 [ 73.709166][ T7690] panic+0x2cb/0x65c [ 73.713124][ T7690] ? __warn_printk+0xf3/0xf3 [ 73.717716][ T7690] ? io_uring_setup+0x13cd/0x1a30 [ 73.722916][ T7690] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.729139][ T7690] ? __warn.cold+0x5/0x45 [ 73.733556][ T7690] ? __warn+0xe8/0x1d0 [ 73.737715][ T7690] ? io_uring_setup+0x13cd/0x1a30 [ 73.743022][ T7690] __warn.cold+0x20/0x45 [ 73.747298][ T7690] ? io_uring_setup+0x13cd/0x1a30 [ 73.752325][ T7690] report_bug+0x263/0x2b0 [ 73.756644][ T7690] do_error_trap+0x11b/0x200 [ 73.761298][ T7690] do_invalid_op+0x37/0x50 [ 73.765707][ T7690] ? io_uring_setup+0x13cd/0x1a30 [ 73.770824][ T7690] invalid_op+0x14/0x20 [ 73.774967][ T7690] RIP: 0010:io_uring_setup+0x13cd/0x1a30 [ 73.780590][ T7690] Code: 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 18 fe ff ff 48 8b bd e8 fe ff ff e8 2d 80 e0 ff e9 07 fe ff ff e8 73 70 a8 ff <0f> 0b e9 bc f8 ff ff e8 67 70 a8 ff 49 8d 84 24 88 00 00 00 48 89 [ 73.800317][ T7690] RSP: 0018:ffff88808afdfdc0 EFLAGS: 00010293 [ 73.806367][ T7690] RAX: ffff88808ccfa440 RBX: 00000000fffffffe RCX: ffffffff81c814f7 [ 73.814419][ T7690] RDX: 0000000000000000 RSI: ffffffff81c81c3d RDI: 0000000000000005 [ 73.822391][ T7690] RBP: ffff88808afdfef0 R08: ffff88808ccfa440 R09: ffffed10115fade4 [ 73.830432][ T7690] R10: ffffed10115fade3 R11: ffff88808afd6f1f R12: ffff8880a5d0f5c0 [ 73.838399][ T7690] R13: ffff88808afdfec8 R14: ffff8880a5d0f650 R15: ffff8880a5d0f614 [ 73.846387][ T7690] ? io_uring_setup+0xc87/0x1a30 [ 73.851591][ T7690] ? io_uring_setup+0x13cd/0x1a30 [ 73.856727][ T7690] ? io_uring_release+0x50/0x50 [ 73.861691][ T7690] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 73.867148][ T7690] ? do_syscall_64+0x26/0x610 [ 73.871918][ T7690] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.877979][ T7690] ? do_syscall_64+0x26/0x610 [ 73.882749][ T7690] ? lockdep_hardirqs_on+0x418/0x5d0 [ 73.888132][ T7690] __x64_sys_io_uring_setup+0x54/0x80 [ 73.893501][ T7690] do_syscall_64+0x103/0x610 [ 73.898092][ T7690] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.904100][ T7690] RIP: 0033:0x440239 [ 73.908110][ T7690] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.927804][ T7690] RSP: 002b:00007ffee154ea78 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 [ 73.936555][ T7690] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 [ 73.944578][ T7690] RDX: 0000000000400b60 RSI: 0000000020000040 RDI: 000000000000014a [ 73.952772][ T7690] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 73.960740][ T7690] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401ac0 [ 73.968750][ T7690] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 73.978062][ T7690] Kernel Offset: disabled [ 73.982509][ T7690] Rebooting in 86400 seconds..