BTRFS info (device loop4): has skinny extents
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
audit: type=1800 audit(1671628737.494:2): pid=9883 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="loop5" ino=2374 res=0
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9883 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline]
WARNING: CPU: 1 PID: 9883 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: 9883 Comm: syz-executor.5 Not tainted 4.14.302-syzkaller #0
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
 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: 0018:ffff888094a67238 EFLAGS: 00010002
RAX: 0000000000040000 RBX: ffff8880aedac580 RCX: ffffc90006bc2000
RDX: 0000000000010c80 RSI: ffffffff816b4bbf RDI: 0000000000000082
RBP: ffff8880907395a8 R08: ffffffff8b9b3108 R09: 00000000000c0238
R10: ffff8880b0afab80 R11: ffff8880b0afa280 R12: ffffea000281f5c0
R13: ffff888090739418 R14: ffff888090739418 R15: ffffea000281f5e0
 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634
 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173
 gfs2_unpin+0xc7/0xeb0 fs/gfs2/lops.c:107
 buf_lo_after_commit+0x12d/0x1f0 fs/gfs2/lops.c:510
 lops_after_commit fs/gfs2/lops.h:64 [inline]
 gfs2_log_flush+0x7fc/0x1ad0 fs/gfs2/log.c:759
 gfs2_write_inode+0x2f4/0x460 fs/gfs2/super.c:759
 write_inode fs/fs-writeback.c:1241 [inline]
 __writeback_single_inode+0x6a4/0x1010 fs/fs-writeback.c:1439
 writeback_single_inode+0x1f3/0x370 fs/fs-writeback.c:1493
 sync_inode fs/fs-writeback.c:2494 [inline]
 sync_inode_metadata+0x79/0xa0 fs/fs-writeback.c:2514
 gfs2_fsync+0x1c8/0x2f0 fs/gfs2/file.c:669
 vfs_fsync_range+0x103/0x260 fs/sync.c:196
 generic_write_sync include/linux/fs.h:2684 [inline]
 generic_file_write_iter+0x410/0x650 mm/filemap.c:3212
 gfs2_file_write_iter+0x2db/0x3b0 fs/gfs2/file.c:720
 call_write_iter include/linux/fs.h:1780 [inline]
 do_iter_readv_writev+0x4cf/0x5f0 fs/read_write.c:675
 do_iter_write+0x152/0x550 fs/read_write.c:954
 vfs_iter_write+0x70/0xa0 fs/read_write.c:967
 iter_file_splice_write+0x52b/0xa90 fs/splice.c:749
 gfs2_file_splice_write fs/gfs2/file.c:979 [inline]
 gfs2_file_splice_write+0x1e4/0x290 fs/gfs2/file.c:966
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973
 do_splice_direct+0x164/0x210 fs/splice.c:1061
 do_sendfile+0x47f/0xb30 fs/read_write.c:1441
 SYSC_sendfile64 fs/read_write.c:1502 [inline]
 SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f55e477b0d9
RSP: 002b:00007f55e2ced168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f55e489af80 RCX: 00007f55e477b0d9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007f55e47d6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe96df2baf R14: 00007f55e2ced300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..