[ 39.279285] audit: type=1800 audit(1549080598.608:27): pid=7679 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 39.299245] audit: type=1800 audit(1549080598.608:28): pid=7679 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. [ 40.260352] audit: type=1800 audit(1549080599.608:29): pid=7679 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 [ 40.279711] audit: type=1800 audit(1549080599.608:30): pid=7679 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 '10.128.10.34' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 50.380307] ------------[ cut here ]------------ [ 50.385719] memory commitment underflow [ 50.385862] WARNING: CPU: 1 PID: 7833 at mm/util.c:643 __vm_enough_memory+0x47b/0x5a0 [ 50.397827] Kernel panic - not syncing: panic_on_warn set ... [ 50.403708] CPU: 1 PID: 7833 Comm: syz-executor240 Not tainted 5.0.0-rc4+ #55 [ 50.410977] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.420313] Call Trace: [ 50.422896] dump_stack+0x172/0x1f0 [ 50.426525] ? __vm_enough_memory+0x3d0/0x5a0 [ 50.431010] panic+0x2cb/0x65c [ 50.434200] ? __warn_printk+0xf3/0xf3 [ 50.438086] ? __vm_enough_memory+0x47b/0x5a0 [ 50.442573] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.448096] ? __warn.cold+0x5/0x45 [ 50.451709] ? __warn+0xe8/0x1d0 [ 50.455072] ? __vm_enough_memory+0x47b/0x5a0 [ 50.459593] __warn.cold+0x20/0x45 [ 50.463121] ? __vm_enough_memory+0x47b/0x5a0 [ 50.467604] report_bug+0x263/0x2b0 [ 50.471238] do_error_trap+0x11b/0x200 [ 50.475127] do_invalid_op+0x37/0x50 [ 50.478825] ? __vm_enough_memory+0x47b/0x5a0 [ 50.483305] invalid_op+0x14/0x20 [ 50.486744] RIP: 0010:__vm_enough_memory+0x47b/0x5a0 [ 50.491849] Code: e8 7a 42 db ff 0f b6 75 d0 40 84 f6 0f 85 50 fc ff ff e8 28 41 db ff 48 c7 c7 a0 f9 72 87 c6 05 0f 3d c4 07 01 e8 c3 94 ae ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 50.510735] RSP: 0018:ffff8880a08efa68 EFLAGS: 00010286 [ 50.516089] RAX: 0000000000000000 RBX: fff8000000000000 RCX: 0000000000000000 [ 50.523342] RDX: 0000000000000000 RSI: ffffffff815a8a06 RDI: ffffed101411df3f [ 50.530595] RBP: ffff8880a08efaa0 R08: ffff88809ea96040 R09: ffff88809ea96908 [ 50.537846] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 50.545117] R13: ffff88809e5d33c0 R14: ffffffff88a276c0 R15: 0000000000000c67 [ 50.552385] ? vprintk_func+0x86/0x189 [ 50.556260] ? __vm_enough_memory+0x47b/0x5a0 [ 50.560748] security_vm_enough_memory_mm+0xa0/0xd0 [ 50.565768] __shmem_file_setup.part.0+0x194/0x2b0 [ 50.570697] shmem_file_setup+0x66/0x90 [ 50.574687] ashmem_mmap+0x35f/0x520 [ 50.578403] mmap_region+0xc37/0x1760 [ 50.582195] ? __x64_sys_brk+0x760/0x760 [ 50.586243] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 50.591769] ? get_unmapped_area+0x295/0x3b0 [ 50.596184] do_mmap+0x8e2/0x1080 [ 50.599635] vm_mmap_pgoff+0x1c5/0x230 [ 50.603512] ? vma_is_stack_for_current+0xd0/0xd0 [ 50.608340] ? iterate_fd+0x360/0x360 [ 50.612131] ksys_mmap_pgoff+0x4aa/0x630 [ 50.616182] ? find_mergeable_anon_vma+0x2e0/0x2e0 [ 50.621099] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.625843] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.630585] ? do_syscall_64+0x26/0x610 [ 50.634548] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.639904] __x64_sys_mmap+0xe9/0x1b0 [ 50.643784] do_syscall_64+0x103/0x610 [ 50.647681] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.652856] RIP: 0033:0x440e79 [ 50.656034] Code: e8 ac 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.674934] RSP: 002b:00007ffe063da818 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 50.682632] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440e79 [ 50.689888] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 00000000206ff000 [ 50.697143] RBP: 00000000006cb018 R08: 0000000000000003 R09: 0000000000000000 [ 50.704395] R10: 0000002000000012 R11: 0000000000000246 R12: 0000000000401d10 [ 50.711651] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 50.720022] Kernel Offset: disabled [ 50.723724] Rebooting in 86400 seconds..