WARNING in __mark_inode_dirty

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 6d0c334a Linux 4.14.164
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=137b8371e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=8b0a5fc97f3338bc
dashboard link: https://syzkaller.appspot.com/bug?extid=b146f599f6750c70cb2b
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b146f5...@syzkaller.appspotmail.com

bdi-block not registered
------------[ cut here ]------------
WARNING: CPU: 1 PID: 30127 at fs/fs-writeback.c:2207
__mark_inode_dirty.cold+0x2f/0x40 fs/fs-writeback.c:2207
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 30127 Comm: syz-executor.1 Not tainted 4.14.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
panic+0x1f9/0x42d kernel/panic.c:183
__warn.cold+0x2f/0x2f kernel/panic.c:547
report_bug+0x216/0x254 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:177 [inline]
fixup_bug arch/x86/kernel/traps.c:172 [inline]
do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:__mark_inode_dirty.cold+0x2f/0x40 fs/fs-writeback.c:2207
RSP: 0018:ffff888096957950 EFLAGS: 00010286
RAX: 0000000000000018 RBX: ffff888094023918 RCX: 0000000000000000
RDX: 0000000000006bd6 RSI: ffffffff814b6675 RDI: ffffed1012d2af20
RBP: ffff888096957990 R08: 0000000000000018 R09: ffff888064e16da0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880974782d8
R13: ffff888097478280 R14: ffff8880940239f0 R15: ffff8880940239a0
mark_buffer_dirty+0x356/0x4a0 fs/buffer.c:1177
__block_commit_write.isra.0+0x139/0x200 fs/buffer.c:2100
block_write_end+0x4d/0x100 fs/buffer.c:2178
blkdev_write_end+0x42/0x200 fs/block_dev.c:620
generic_perform_write+0x29f/0x480 mm/filemap.c:3058
__generic_file_write_iter+0x239/0x5b0 mm/filemap.c:3172
blkdev_write_iter fs/block_dev.c:1914 [inline]
blkdev_write_iter+0x1e8/0x3a0 fs/block_dev.c:1891
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
net_ratelimit: 14 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45af49
RSP: 002b:00007f185f4cbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49
RDX: 0000000000000004 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f185f4cc6d4
R13: 00000000004ccead R14: 00000000004e8320 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.