[ 36.894389][ T26] audit: type=1800 audit(1556017753.129:28): pid=7627 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. [ 37.708576][ T26] audit: type=1800 audit(1556017754.039:29): pid=7627 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 [ 37.729302][ T26] audit: type=1800 audit(1556017754.039:30): pid=7627 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 '10.128.0.118' (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 syzkaller login: [ 46.380443][ T7803] ------------[ cut here ]------------ [ 46.387382][ T7803] memory commitment underflow [ 46.387522][ T7803] WARNING: CPU: 1 PID: 7803 at mm/util.c:657 __vm_enough_memory+0x47b/0x5a0 [ 46.400873][ T7803] Kernel panic - not syncing: panic_on_warn set ... [ 46.413299][ T7803] CPU: 1 PID: 7803 Comm: syz-executor784 Not tainted 5.1.0-rc6 #79 [ 46.421182][ T7803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.431237][ T7803] Call Trace: [ 46.434536][ T7803] dump_stack+0x172/0x1f0 [ 46.438886][ T7803] ? __vm_enough_memory+0x3d0/0x5a0 [ 46.444093][ T7803] panic+0x2cb/0x65c [ 46.447997][ T7803] ? __warn_printk+0xf3/0xf3 [ 46.452597][ T7803] ? __vm_enough_memory+0x47b/0x5a0 [ 46.457812][ T7803] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.464106][ T7803] ? __warn.cold+0x5/0x45 [ 46.468443][ T7803] ? __warn+0xe8/0x1d0 [ 46.472518][ T7803] ? __vm_enough_memory+0x47b/0x5a0 [ 46.477725][ T7803] __warn.cold+0x20/0x45 [ 46.481973][ T7803] ? vprintk_emit+0x1ce/0x6d0 [ 46.486655][ T7803] ? __vm_enough_memory+0x47b/0x5a0 [ 46.491880][ T7803] report_bug+0x263/0x2b0 [ 46.496228][ T7803] do_error_trap+0x11b/0x200 [ 46.500827][ T7803] do_invalid_op+0x37/0x50 [ 46.505257][ T7803] ? __vm_enough_memory+0x47b/0x5a0 [ 46.510459][ T7803] invalid_op+0x14/0x20 [ 46.514629][ T7803] RIP: 0010:__vm_enough_memory+0x47b/0x5a0 [ 46.520437][ T7803] Code: e8 aa 79 da ff 0f b6 75 d0 40 84 f6 0f 85 50 fc ff ff e8 58 78 da ff 48 c7 c7 60 7c 72 87 c6 05 2f 73 c4 07 01 e8 03 26 ad ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 46.540048][ T7803] RSP: 0018:ffff888093357b10 EFLAGS: 00010286 [ 46.546117][ T7803] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 46.554098][ T7803] RDX: 0000000000000000 RSI: ffffffff815afcf6 RDI: ffffed101266af54 [ 46.562074][ T7803] RBP: ffff888093357b48 R08: ffff888097d26480 R09: ffff888097d26d70 [ 46.570048][ T7803] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 46.578021][ T7803] R13: ffff8880924116c0 R14: ffffffff88a2a580 R15: 0000000000000c67 [ 46.586015][ T7803] ? vprintk_func+0x86/0x189 [ 46.590628][ T7803] security_vm_enough_memory_mm+0xa0/0xd0 [ 46.596363][ T7803] copy_process.part.0+0x3411/0x7980 [ 46.601682][ T7803] ? __cleanup_sighand+0x60/0x60 [ 46.606638][ T7803] ? task_stopped_code+0x180/0x180 [ 46.611770][ T7803] _do_fork+0x257/0xfd0 [ 46.616028][ T7803] ? fork_idle+0x1d0/0x1d0 [ 46.620459][ T7803] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.625924][ T7803] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.631391][ T7803] ? do_syscall_64+0x26/0x610 [ 46.636071][ T7803] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.642139][ T7803] ? do_syscall_64+0x26/0x610 [ 46.646830][ T7803] __x64_sys_clone+0xbf/0x150 [ 46.651528][ T7803] do_syscall_64+0x103/0x610 [ 46.656127][ T7803] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.662019][ T7803] RIP: 0033:0x43fc4a [ 46.665925][ T7803] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 46.685626][ T7803] RSP: 002b:00007fff9d21f660 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 46.694045][ T7803] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fc4a [ 46.702021][ T7803] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 46.709998][ T7803] RBP: 00007fff9d21f680 R08: 0000000000001e7b R09: 0000000000d05880 [ 46.717980][ T7803] R10: 0000000000d05b50 R11: 0000000000000246 R12: 0000000000001e7b [ 46.725957][ T7803] R13: 0000000000402090 R14: 0000000000000000 R15: 0000000000000000 [ 46.735090][ T7803] Kernel Offset: disabled [ 46.739492][ T7803] Rebooting in 86400 seconds..