[ 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 '10.128.0.111' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 38.643107] audit: type=1400 audit(1591544678.222:8): avc: denied { execmem } for pid=6348 comm="syz-executor567" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 38.656978] memory commitment underflow [ 38.671994] ------------[ cut here ]------------ [ 38.680942] WARNING: CPU: 0 PID: 6356 at mm/util.c:604 __vm_enough_memory.cold+0x18/0x59 [ 38.690803] Kernel panic - not syncing: panic_on_warn set ... [ 38.690803] [ 38.698146] CPU: 0 PID: 6356 Comm: syz-executor567 Not tainted 4.14.183-syzkaller #0 [ 38.706010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.715360] Call Trace: [ 38.717935] dump_stack+0x1b2/0x283 [ 38.721544] panic+0x1f9/0x42d [ 38.724730] ? add_taint.cold+0x16/0x16 [ 38.729573] ? __vm_enough_memory.cold+0x18/0x59 [ 38.734308] ? __vm_enough_memory.cold+0x18/0x59 [ 38.739052] __warn.cold+0x2f/0x30 [ 38.742582] ? ist_end_non_atomic+0x10/0x10 [ 38.746892] ? __vm_enough_memory.cold+0x18/0x59 [ 38.751638] report_bug+0x20a/0x248 [ 38.755279] do_error_trap+0x195/0x2d0 [ 38.759161] ? math_error+0x2d0/0x2d0 [ 38.762949] ? ___preempt_schedule+0x16/0x18 [ 38.767340] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.772423] invalid_op+0x1b/0x40 [ 38.775869] RIP: 0010:__vm_enough_memory.cold+0x18/0x59 [ 38.781205] RSP: 0018:ffff88809783fb68 EFLAGS: 00010286 [ 38.786544] RAX: 000000000000001b RBX: fff8000000000000 RCX: 0000000000000000 [ 38.793802] RDX: 0000000000000000 RSI: ffff8880974b6cb0 RDI: ffffed1012f07f63 [ 38.801832] RBP: 0000000000000001 R08: 000000000000001b R09: 0000000000000000 [ 38.809170] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089db0cc0 [ 38.816511] R13: ffffffff87bf9e00 R14: fff800000000e9fd R15: 0000000000000c69 [ 38.823777] ? __vm_enough_memory.cold+0x18/0x59 [ 38.828510] __shmem_file_setup.part.0+0x23d/0x3c0 [ 38.833420] ? shmem_rename2+0x6e0/0x6e0 [ 38.837463] shmem_file_setup+0x4b/0x60 [ 38.841872] ashmem_mmap+0x306/0x570 [ 38.845561] ? kmem_cache_alloc+0x35f/0x3c0 [ 38.849874] mmap_region+0x8a8/0x1060 [ 38.853655] do_mmap+0x5b3/0xcb0 [ 38.857014] vm_mmap_pgoff+0x14e/0x1a0 [ 38.860894] ? vma_is_stack_for_current+0xb0/0xb0 [ 38.865729] ? __fget+0x226/0x360 [ 38.869180] SyS_mmap_pgoff+0x249/0x510 [ 38.873145] ? find_mergeable_anon_vma+0x2b0/0x2b0 [ 38.878315] ? do_syscall_64+0x4c/0x640 [ 38.882265] ? align_vdso_addr+0x60/0x60 [ 38.886305] do_syscall_64+0x1d5/0x640 [ 38.890188] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 38.895360] RIP: 0033:0x4412e9 [ 38.898527] RSP: 002b:00007ffeabb043c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 38.906209] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412e9 [ 38.913455] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020701000 [ 38.920710] RBP: 00000000006cb018 R08: 0000000000000003 R09: 0000000000000000 [ 38.927957] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000402060 [ 38.935217] R13: 00000000004020f0 R14: 0000000000000000 R15: 0000000000000000 [ 38.943844] Kernel Offset: disabled [ 38.947533] Rebooting in 86400 seconds..