------------[ cut here ]------------
WARNING: CPU: 1 PID: 2105 at mm/util.c:546 __vm_enough_memory+0x41d/0x510 mm/util.c:544
memory commitment underflow[  122.964935] Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 2105 Comm: syz-executor3 Not tainted 4.9.125+ #89
 ffff8801aaa079a0 ffffffff81af0ae9 ffffffff82838ba0 00000000ffffffff
 0000000000000000 0000000000000001 0000000000000222 ffff8801aaa07a60
 ffffffff813df095 0000000041b58ab3 ffffffff82c28773 ffffffff813deed6
Call Trace:
 [<ffffffff81af0ae9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af0ae9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813df095>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813df364>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff810d9262>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff8144e62d>] __vm_enough_memory+0x41d/0x510 mm/util.c:544
 [<ffffffff81996ba6>] security_vm_enough_memory_mm+0x96/0xb0 security/security.c:238
 [<ffffffff810d4859>] dup_mmap kernel/fork.c:615 [inline]
 [<ffffffff810d4859>] dup_mm kernel/fork.c:1156 [inline]
 [<ffffffff810d4859>] copy_mm kernel/fork.c:1210 [inline]
 [<ffffffff810d4859>] copy_process.part.8+0x3e19/0x6350 kernel/fork.c:1678
 [<ffffffff810d7212>] copy_process kernel/fork.c:1503 [inline]
 [<ffffffff810d7212>] _do_fork+0x1b2/0xd30 kernel/fork.c:1963
 [<ffffffff810d7e67>] SYSC_clone kernel/fork.c:2075 [inline]
 [<ffffffff810d7e67>] SyS_clone+0x37/0x50 kernel/fork.c:2069
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278c193>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..