------------[ cut here ]------------
memory commitment underflow
WARNING: CPU: 1 PID: 7443 at mm/util.c:805 __vm_enough_memory+0x300/0x380 mm/util.c:805
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 7443 Comm: systemd-udevd Not tainted 5.7.0-rc1-next-20200415-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+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:__vm_enough_memory+0x300/0x380 mm/util.c:805
Code: 08 31 ff 89 de e8 20 b8 d7 ff 84 db 0f 85 d3 fd ff ff e8 b3 b6 d7 ff 48 c7 c7 20 bb 33 88 c6 05 84 15 eb 08 01 e8 78 eb a8 ff <0f> 0b e9 b4 fd ff ff 48 c7 c7 00 24 a5 89 e8 4d d7 15 00 e9 d2 fd
RSP: 0018:ffffc90006967868 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ce211 RDI: fffff52000d2ceff
RBP: ffffffff89a52400 R08: ffff8880a6948440 R09: fffffbfff1862750
R10: ffffffff8c313a7f R11: fffffbfff186274f R12: 0000000000000001
R13: ffff888091415680 R14: 0000000000000001 R15: ffffffffffffe659
 shmem_acct_block mm/shmem.c:205 [inline]
 shmem_inode_acct_block mm/shmem.c:220 [inline]
 shmem_alloc_and_acct_page+0x529/0x980 mm/shmem.c:1505
 shmem_getpage_gfp+0x502/0x2a10 mm/shmem.c:1828
 shmem_getpage mm/shmem.c:154 [inline]
 shmem_write_begin+0x102/0x1e0 mm/shmem.c:2483
 generic_perform_write+0x20a/0x4e0 mm/filemap.c:3308
 __generic_file_write_iter+0x24c/0x610 mm/filemap.c:3437
 generic_file_write_iter+0x3f3/0x630 mm/filemap.c:3469
 call_write_iter include/linux/fs.h:1907 [inline]
 new_sync_write+0x4a2/0x700 fs/read_write.c:484
 __vfs_write+0xc9/0x100 fs/read_write.c:497
 vfs_write+0x268/0x5d0 fs/read_write.c:559
 ksys_write+0x12d/0x250 fs/read_write.c:612
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x7f4736655970
Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24
RSP: 002b:00007ffcc7584be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000003c RCX: 00007f4736655970
RDX: 000000000000003c RSI: 0000556b69849310 RDI: 000000000000000f
RBP: 0000556b69849310 R08: 0000556b69830220 R09: 00007f47377e28c0
R10: 0000000000000073 R11: 0000000000000246 R12: 000000000000003c
R13: 0000000000000001 R14: 0000556b69830140 R15: 000000000000003c
Kernel Offset: disabled
Rebooting in 86400 seconds..