syzbot

INFO: task kworker/u8:11:2931 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc1-syzkaller-00027-g4a4be1ad3a6e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:11   state:D stack:20184 pid:2931  tgid:2931  ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-bcachefs-22)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 six_lock_slowpath+0x660/0x16a0 fs/bcachefs/six.c:493
 six_lock_ip_waiter+0x117/0x160 fs/bcachefs/six.c:550
 __btree_node_lock_nopath fs/bcachefs/btree_locking.h:208 [inline]
 btree_node_lock_nopath+0xbc/0x170 fs/bcachefs/btree_locking.h:221
 btree_node_lock fs/bcachefs/btree_locking.h:268 [inline]
 bch2_btree_path_traverse_cached+0x7af/0xd50 fs/bcachefs/btree_key_cache.c:566
 bch2_btree_path_traverse_one+0x477/0x2930 fs/bcachefs/btree_iter.c:1158
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:229 [inline]
 bch2_btree_iter_peek_slot+0x86f/0x26d0 fs/bcachefs/btree_iter.c:2603