syzbot

INFO: task kworker/0:2H:7174 blocked for more than 143 seconds.
      Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2H    state:D stack:25272 pid:7174  tgid:7174  ppid:2      flags:0x00004000
Workqueue: bcachefs_btree_io btree_node_write_work
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]
 btree_path_lock_root fs/bcachefs/btree_iter.c:762 [inline]
 bch2_btree_path_traverse_one+0xc25/0x2930 fs/bcachefs/btree_iter.c:1182
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:229 [inline]
 bch2_btree_iter_traverse+0x6c0/0xcc0 fs/bcachefs/btree_iter.c:1861
 bch2_btree_node_update_key_get_iter+0x198/0xa90 fs/bcachefs/btree_update_interior.c:2480
 btree_node_write_work+0x86e/0xde0 fs/bcachefs/btree_io.c:1885
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor.0:21566 blocked for more than 144 seconds.
      Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:13240 pid:21566 tgid:21565 ppid:21000  flags:0x00004006
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