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
memory commitment underflow
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6356 at mm/util.c:604 __vm_enough_memory.cold+0x18/0x59 mm/util.c:604
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6356 Comm: syz-executor567 Not tainted 4.14.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:__vm_enough_memory.cold+0x18/0x59 mm/util.c:604
RSP: 0018:ffff88809783fb68 EFLAGS: 00010286
RAX: 000000000000001b RBX: fff8000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880974b6cb0 RDI: ffffed1012f07f63
RBP: 0000000000000001 R08: 000000000000001b R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089db0cc0
R13: ffffffff87bf9e00 R14: fff800000000e9fd R15: 0000000000000c69
 shmem_acct_size mm/shmem.c:149 [inline]
 __shmem_file_setup.part.0+0x23d/0x3c0 mm/shmem.c:4251
 __shmem_file_setup mm/shmem.c:4248 [inline]
 shmem_file_setup mm/shmem.c:4315 [inline]
 shmem_file_setup+0x4b/0x60 mm/shmem.c:4313
 ashmem_mmap+0x306/0x570 drivers/staging/android/ashmem.c:414
 call_mmap include/linux/fs.h:1783 [inline]
 mmap_region+0x8a8/0x1060 mm/mmap.c:1717
 do_mmap+0x5b3/0xcb0 mm/mmap.c:1495
 do_mmap_pgoff include/linux/mm.h:2184 [inline]
 vm_mmap_pgoff+0x14e/0x1a0 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1545 [inline]
 SyS_mmap_pgoff+0x249/0x510 mm/mmap.c:1503
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4412e9
RSP: 002b:00007ffeabb043c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412e9
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020701000
RBP: 00000000006cb018 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000402060
R13: 00000000004020f0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..