memory commitment underflow
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8324 at mm/util.c:604 __vm_enough_memory.cold+0x18/0x58 mm/util.c:604
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8324 Comm: syz-executor.3 Not tainted 4.14.165-syzkaller #0
audit: type=1804 audit(1579238417.558:63): pid=8325 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir182952642/syzkaller.jUcZ42/22/bus" dev="sda1" ino=16631 res=1
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+0x142/0x197 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x2f kernel/panic.c:547
 report_bug+0x216/0x254 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+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:__vm_enough_memory.cold+0x18/0x58 mm/util.c:604
audit: type=1804 audit(1579238417.608:64): pid=8325 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir182952642/syzkaller.jUcZ42/22/bus" dev="sda1" ino=16631 res=1
RSP: 0018:ffff888051d5fc00 EFLAGS: 00010282
RAX: 000000000000001b RBX: 0000000000000021 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88807f868c40 RDI: ffffed100a3abf76
RBP: ffff888051d5fc38 R08: 000000000000001b R09: ffff88807f868c60
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88807d8df940 R14: ffffffff87ffc6e0 R15: fff800000003d6f6
 security_vm_enough_memory_mm+0x93/0xb0 security/security.c:328
 mmap_region+0x234/0x1030 mm/mmap.c:1667
 do_mmap+0x5b8/0xcd0 mm/mmap.c:1495
 do_mmap_pgoff include/linux/mm.h:2173 [inline]
 vm_mmap_pgoff+0x17a/0x1d0 mm/util.c:333
audit: type=1804 audit(1579238417.628:65): pid=8325 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir182952642/syzkaller.jUcZ42/22/bus" dev="sda1" ino=16631 res=1
 SYSC_mmap_pgoff mm/mmap.c:1545 [inline]
 SyS_mmap_pgoff+0xa3/0x520 mm/mmap.c:1503
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b04a
RSP: 002b:00007ffffd92de68 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045b04a
RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000
RBP: ffffffffffffffff R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000020022 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000021000 R14: 0000000000020022 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..