syzbot

------------[ cut here ]------------
WARNING: CPU: 1 PID: 2319 at mm/util.c:546 __vm_enough_memory+0x41d/0x510 mm/util.c:544
memory commitment underflow[   41.739211] Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 2319 Comm: getty Not tainted 4.9.141+ #1
 ffff8801d1ac7858 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff
 ffffffff82a9de00 0000000000000001 0000000000000009 ffff8801d1ac7918
 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66
Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813f7125>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813f7362>] __warn.cold.8+0x2f/0x2f kernel/panic.c:542
 [<ffffffff810dbec2>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff8146a69d>] __vm_enough_memory+0x41d/0x510 mm/util.c:544
 [<ffffffff819e31d6>] security_vm_enough_memory_mm+0x96/0xb0 security/security.c:238
 [<ffffffff814b256e>] acct_stack_growth mm/mmap.c:2249 [inline]
 [<ffffffff814b256e>] expand_downwards+0x40e/0x960 mm/mmap.c:2396
 [<ffffffff814b2add>] expand_stack+0x1d/0x30 mm/mmap.c:2470
 [<ffffffff8151b656>] setup_arg_pages+0x546/0x7b0 fs/exec.c:781
 [<ffffffff816218fa>] load_elf_binary+0xaaa/0x4bc0 fs/binfmt_elf.c:860
 [<ffffffff8151fd9f>] search_binary_handler+0x14f/0x6f0 fs/exec.c:1621
 [<ffffffff81521f69>] exec_binprm fs/exec.c:1663 [inline]
 [<ffffffff81521f69>] do_execveat_common.isra.14+0x1139/0x1ed0 fs/exec.c:1785
 [<ffffffff81523662>] do_execve fs/exec.c:1829 [inline]
 [<ffffffff81523662>] SYSC_execve fs/exec.c:1910 [inline]
 [<ffffffff81523662>] SyS_execve+0x42/0x50 fs/exec.c:1905
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..