[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.582561] IPVS: ftp: loaded support on port[0] = 21 [ 28.621933] memory commitment underflow [ 28.622017] ------------[ cut here ]------------ [ 28.630830] WARNING: CPU: 0 PID: 4634 at mm/util.c:622 __vm_enough_memory.cold+0x18/0x59 [ 28.639037] Kernel panic - not syncing: panic_on_warn set ... [ 28.639037] [ 28.646380] CPU: 0 PID: 4634 Comm: systemd-udevd Not tainted 4.14.246-syzkaller #0 [ 28.654062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.663391] Call Trace: [ 28.665961] dump_stack+0x1b2/0x281 [ 28.669567] panic+0x1f9/0x42d [ 28.672739] ? add_taint.cold+0x16/0x16 [ 28.676696] ? __vm_enough_memory.cold+0x18/0x59 [ 28.681444] ? __vm_enough_memory.cold+0x18/0x59 [ 28.686177] __warn.cold+0x20/0x44 [ 28.689698] ? ist_end_non_atomic+0x10/0x10 [ 28.694010] ? __vm_enough_memory.cold+0x18/0x59 [ 28.698758] report_bug+0x208/0x250 [ 28.702365] do_error_trap+0x195/0x2d0 [ 28.706243] ? math_error+0x2d0/0x2d0 [ 28.710026] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.714849] invalid_op+0x1b/0x40 [ 28.718279] RIP: 0010:__vm_enough_memory.cold+0x18/0x59 [ 28.723617] RSP: 0018:ffff88809a5d7bf8 EFLAGS: 00010286 [ 28.729047] RAX: 000000000000001b RBX: 000000000000000a RCX: 0000000000000000 [ 28.736380] RDX: 0000000000000000 RSI: ffff88809a5cec98 RDI: ffffed10134baf75 [ 28.743631] RBP: 0000000000000001 R08: 000000000000001b R09: 0000000000000000 [ 28.750878] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809a745900 [ 28.758126] R13: ffffffff88feb1e0 R14: fff8000000005b68 R15: 0000000000000d36 [ 28.765390] ? __vm_enough_memory.cold+0x18/0x59 [ 28.770125] copy_process.part.0+0x4ab3/0x71c0 [ 28.774781] ? __cleanup_sighand+0x40/0x40 [ 28.779002] ? __local_bh_enable_ip+0xc1/0x170 [ 28.783564] _do_fork+0x184/0xc80 [ 28.787021] ? syscall_trace_enter+0x486/0xc20 [ 28.791580] ? fork_idle+0x270/0x270 [ 28.795272] ? syscall_slow_exit_work+0x560/0x560 [ 28.800096] ? do_syscall_64+0x4c/0x640 [ 28.804045] ? sys_vfork+0x20/0x20 [ 28.807565] do_syscall_64+0x1d5/0x640 [ 28.811433] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.816598] RIP: 0033:0x7f7bee95038b [ 28.820284] RSP: 002b:00007fffe98e9c10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 28.827977] RAX: ffffffffffffffda RBX: 00007fffe98e9c10 RCX: 00007f7bee95038b [ 28.835240] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 28.842497] RBP: 00007fffe98e9c60 R08: 00007f7befb018c0 R09: 0000000000000210 [ 28.849747] R10: 00007f7befb01b90 R11: 0000000000000246 R12: 0000000000000000 [ 28.857008] R13: 0000000000000020 R14: 0000000000000000 R15: 0000000000000000 [ 28.864691] Kernel Offset: disabled [ 28.868366] Rebooting in 86400 seconds..