------------[ cut here ]------------
WARNING: CPU: 0 PID: 21775 at mm/util.c:544 __vm_enough_memory+0x401/0x540 mm/util.c:544
memory commitment underflow[ 1142.084999] Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 21775 Comm: syz-executor.3 Not tainted 4.9.170+ #48
 ffff8801d99f7a40 ffffffff81b4fb21 ffff8801d99f7b00 ffffffff82a39ba0
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801d99f7b20
 ffffffff813f966a 0000000041b58ab3 ffffffff82e2ef22 ffffffff813f9491
Call Trace:
 [<00000000ce479753>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000ce479753>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000437c1cc9>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<00000000c66f22f7>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000147dca75>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<000000003fae7c1b>] __vm_enough_memory+0x401/0x540 mm/util.c:544
 [<00000000fde1b8b5>] security_vm_enough_memory_mm+0x99/0xc0 security/security.c:238
 [<000000002ea2d6d4>] mmap_region+0x4a8/0xfa0 mm/mmap.c:1676
 [<00000000daf8960f>] do_mmap+0x539/0xbc0 mm/mmap.c:1505
 [<000000007506ea29>] do_mmap_pgoff include/linux/mm.h:2034 [inline]
 [<000000007506ea29>] vm_mmap_pgoff+0x179/0x1c0 mm/util.c:329
 [<00000000bb818db5>] SYSC_mmap_pgoff mm/mmap.c:1555 [inline]
 [<00000000bb818db5>] SyS_mmap_pgoff+0x14d/0x1b0 mm/mmap.c:1513
 [<00000000c4aad917>] SYSC_mmap arch/x86/kernel/sys_x86_64.c:96 [inline]
 [<00000000c4aad917>] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:87
 [<000000000fd6fc60>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<00000000a547332e>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..