------------[ cut here ]------------
memory commitment underflow
WARNING: CPU: 0 PID: 6119 at mm/util.c:650 __vm_enough_memory+0x46d/0x590 mm/util.c:650
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6119 Comm: cron Not tainted 4.19.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x46 kernel/panic.c:541
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__vm_enough_memory+0x46d/0x590 mm/util.c:650
Code: 07 31 ff 89 de e8 33 27 dc ff 84 db 0f 85 56 fc ff ff e8 f6 25 dc ff 48 c7 c7 e0 12 72 87 c6 05 69 4a fb 07 01 e8 2e 21 b1 ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14
RSP: 0018:ffff88809ad4fb90 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81534121 RDI: ffffed10135a9f64
RBP: 0000000000000001 R08: ffff88809fe82440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880a009a880 R14: ffffffff88c18b80 R15: 0000000000000c5d
 dup_mmap kernel/fork.c:485 [inline]
 dup_mm kernel/fork.c:1288 [inline]
 copy_mm kernel/fork.c:1344 [inline]
 copy_process.part.0+0x341d/0x7e80 kernel/fork.c:1897
 copy_process kernel/fork.c:1694 [inline]
 _do_fork+0x22f/0xf40 kernel/fork.c:2207
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f20868a038b
Code: db 45 85 f6 0f 85 95 01 00 00 64 4c 8b 04 25 10 00 00 00 31 d2 4d 8d 90 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 de 00 00 00 85 c0 41 89 c5 0f 85 e5 00 00
RSP: 002b:00007ffd6336f140 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd6336f140 RCX: 00007f20868a038b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd6336f190 R08: 00007f20871d5840 R09: 0000000000000000
R10: 00007f20871d5b10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..