bdi-block not registered
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8862 at fs/fs-writeback.c:2207 __mark_inode_dirty.cold+0x2f/0x42 fs/fs-writeback.c:2207
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8862 Comm: syz-executor.0 Not tainted 4.14.156-syzkaller #0
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xe5/0x154 lib/dump_stack.c:58
 panic+0x1f1/0x3da kernel/panic.c:183
 __warn.cold+0x2f/0x33 kernel/panic.c:547
 report_bug+0x20a/0x248 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+0x1bf/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:__mark_inode_dirty.cold+0x2f/0x42 fs/fs-writeback.c:2207
RSP: 0018:ffff8881d09d7448 EFLAGS: 00010286
RAX: 0000000000000018 RBX: ffff8881d53e4698 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffc90001fa6000 RDI: ffffed103a13ae7b
RBP: ffff8881ca234400 R08: 0000000000000018 R09: ffffed103b764ce9
R10: ffffed103b764ce8 R11: ffff8881dbb26747 R12: ffff8881ca234458
R13: ffff8881d53e4770 R14: ffff8881ca2344b0 R15: ffff8881ca234400
 mark_buffer_dirty+0x258/0x490 fs/buffer.c:1177
 __block_commit_write.isra.0+0x138/0x210 fs/buffer.c:2100
 block_write_end+0x42/0xf0 fs/buffer.c:2178
 blkdev_write_end+0x3c/0x130 fs/block_dev.c:620
 generic_perform_write+0x281/0x460 mm/filemap.c:3144
 __generic_file_write_iter+0x32e/0x550 mm/filemap.c:3258
 blkdev_write_iter fs/block_dev.c:1914 [inline]
 blkdev_write_iter+0x1fb/0x3d0 fs/block_dev.c:1891
 call_write_iter include/linux/fs.h:1798 [inline]
 do_iter_readv_writev+0x379/0x580 fs/read_write.c:679
 do_iter_write fs/read_write.c:958 [inline]
 do_iter_write+0x152/0x550 fs/read_write.c:939
 vfs_iter_write+0x70/0xa0 fs/read_write.c:971
 iter_file_splice_write+0x560/0xa50 fs/splice.c:749
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x118/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x292/0x760 fs/splice.c:973
 do_splice_direct+0x177/0x240 fs/splice.c:1061
 do_sendfile+0x493/0xb20 fs/read_write.c:1445
 SYSC_sendfile64 fs/read_write.c:1506 [inline]
 SyS_sendfile64+0x11f/0x140 fs/read_write.c:1492
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a649
RSP: 002b:00007faaa3defc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a649
RDX: 0000000000000000 RSI: 000000000000000a RDI: 000000000000000c
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0020000102000007 R11: 0000000000000246 R12: 00007faaa3df06d4
R13: 00000000004c85ca R14: 00000000004dec58 R15: 00000000ffffffff
Kernel Offset: 0x28c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..