INFO: task kworker/u9:5:5116 blocked for more than 143 seconds.
      Not tainted 6.9.0-syzkaller-10729-gb6394d6f7159 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:5    state:D stack:26392 pid:5116  tgid:5116  ppid:2      flags:0x00004000
Workqueue: bcachefs bch2_write_point_do_index_updates
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x4a00 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]
 btree_path_lock_root fs/bcachefs/btree_iter.c:760 [inline]
 bch2_btree_path_traverse_one+0xc25/0x2930 fs/bcachefs/btree_iter.c:1180
 bch2_extent_update+0x11b/0xbb0 fs/bcachefs/io_write.c:289
 bch2_write_index_default fs/bcachefs/io_write.c:374 [inline]
 __bch2_write_index+0xee9/0x2190 fs/bcachefs/io_write.c:527
 bch2_write_point_do_index_updates+0x32e/0x690 fs/bcachefs/io_write.c:636
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312