------------[ cut here ]------------
WARNING: CPU: 0 PID: 3690 at mm/util.c:544 __vm_enough_memory+0x401/0x540 mm/util.c:544
memory commitment underflow[ 1422.040807] Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3690 Comm: syz-executor.2 Not tainted 4.9.170+ #45
 ffff8801a7b97a40 ffffffff81b4fb21 ffff8801a7b97b00 ffffffff82a39ba0
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801a7b97b20
 ffffffff813f966a 0000000041b58ab3 ffffffff82e2eee2 ffffffff813f9491
Call Trace:
 [<0000000079ad963c>] __dump_stack lib/dump_stack.c:15 [inline]
 [<0000000079ad963c>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<000000008cb99b3a>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000005aeecec6>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000a7c962ce>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<00000000ce4a238c>] __vm_enough_memory+0x401/0x540 mm/util.c:544
 [<00000000f98bc091>] security_vm_enough_memory_mm+0x99/0xc0 security/security.c:238
 [<00000000021c2ca4>] mmap_region+0x4a8/0xfa0 mm/mmap.c:1676
 [<00000000143b8e2d>] do_mmap+0x539/0xbc0 mm/mmap.c:1505
 [<00000000c36a9438>] do_mmap_pgoff include/linux/mm.h:2034 [inline]
 [<00000000c36a9438>] vm_mmap_pgoff+0x179/0x1c0 mm/util.c:329
 [<000000003636f96f>] SYSC_mmap_pgoff mm/mmap.c:1555 [inline]
 [<000000003636f96f>] SyS_mmap_pgoff+0x14d/0x1b0 mm/mmap.c:1513
 [<00000000be64228d>] SYSC_mmap arch/x86/kernel/sys_x86_64.c:96 [inline]
 [<00000000be64228d>] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:87
 [<000000002a289260>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<00000000130334ca>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..