overlayfs: 'file0' not a directory
overlayfs: 'file0' not a directory
overlayfs: 'file0' not a directory
------------[ cut here ]------------
overlayfs: 'file0' not a directory
WARNING: CPU: 1 PID: 11081 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline]
WARNING: CPU: 1 PID: 11081 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 11081 Comm: syz-executor.5 Not tainted 4.14.301-syzkaller #0
overlayfs: 'file0' not a directory
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
overlayfs: 'file0' not a directory
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:inode_to_wb include/linux/backing-dev.h:335 [inline]
RIP: 0010:account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
RSP: 0000:ffff88809e907850 EFLAGS: 00010002
RAX: 0000000000040000 RBX: ffff8880aee64000 RCX: ffffc9000628d000
RDX: 0000000000003530 RSI: ffffffff816b4bbf RDI: 0000000000000082
RBP: ffff88808ff46568 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: ffff888092244240 R12: ffffea000284d980
R13: ffff88808ff463d8 R14: ffff88808ff463d8 R15: ffffea000284d9a0
 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634
overlayfs: 'file0' not a directory
 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173
overlayfs: 'file0' not a directory
 gfs2_unpin+0xc7/0xeb0 fs/gfs2/lops.c:107
 buf_lo_after_commit+0x12d/0x1f0 fs/gfs2/lops.c:510
overlayfs: 'file0' not a directory
 lops_after_commit fs/gfs2/lops.h:64 [inline]
 gfs2_log_flush+0x7fc/0x1ad0 fs/gfs2/log.c:759
 gfs2_trans_end+0x52b/0x560 fs/gfs2/trans.c:123
 alloc_dinode fs/gfs2/inode.c:397 [inline]
 gfs2_create_inode+0x160f/0x3890 fs/gfs2/inode.c:699
overlayfs: 'file0' not a directory
 gfs2_mkdir+0xac/0xd0 fs/gfs2/inode.c:1210
 vfs_mkdir+0x463/0x6e0 fs/namei.c:3851
 SYSC_mkdirat fs/namei.c:3874 [inline]
 SyS_mkdirat+0x1fd/0x270 fs/namei.c:3858
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fb897ce80f7
RSP: 002b:00007fb89625af88 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb897ce80f7
RDX: 00000000000001ff RSI: 0000000020000000 RDI: 00000000ffffff9c
RBP: 0000000020000000 R08: 0000000000000040 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000020000000 R14: 00007fb89625afe0 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..