------------[ cut here ]------------
memory commitment underflow
WARNING: CPU: 0 PID: 29412 at mm/util.c:645 __vm_enough_memory+0x734/0x960 mm/util.c:643
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 29412 Comm: syz-executor0 Not tainted 4.20.0-rc3+ #343
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+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
kobject: 'loop1' (00000000c855b82f): kobject_uevent_env
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:__vm_enough_memory+0x734/0x960 mm/util.c:643
Code: 6b d3 ff 0f b6 85 28 fe ff ff 84 c0 0f 85 4e fa ff ff e8 2f 6a d3 ff 48 c7 c7 60 94 32 88 c6 05 0b 99 66 08 01 e8 7c ca 9c 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:ffff88817feef668 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 1ffff1102ffdded1 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8165eaf5 RDI: 0000000000000006
RBP: ffff88817feef850 R08: ffff88817f82a240 R09: 0000000000000006
kobject: 'loop1' (00000000c855b82f): fill_kobj_path: path = '/devices/virtual/block/loop1'
R10: 0000000000000000 R11: ffff88817f82a240 R12: ffff88817feef828
R13: 0000000000000c60 R14: ffffffff8961c0a0 R15: 0000000000000000
 security_vm_enough_memory_mm+0x9d/0xc0 security/security.c:349
 mmap_region+0x3ad/0x1cd0 mm/mmap.c:1738
 do_mmap+0xa22/0x1230 mm/mmap.c:1559
 do_mmap_pgoff include/linux/mm.h:2328 [inline]
 vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350
 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1609
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
 __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4575ba
Code: 89 f5 41 54 49 89 fc 55 53 74 35 49 63 e8 48 63 da 4d 89 f9 49 89 e8 4d 63 d6 48 89 da 4c 89 ee 4c 89 e7 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 4e 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 00
RSP: 002b:0000000000a3fad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004575ba
RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000
RBP: ffffffffffffffff R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000020022 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000021000 R14: 0000000000020022 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..