INFO: task kworker/1:2:2121 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:0 pid:2121 ppid:2 flags:0x00000008 Workqueue: events_long flush_mdb Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 io_schedule+0x8c/0x12c kernel/sched/core.c:9026 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xcc/0x1e8 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x194/0x21c kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer+0x78/0xac fs/buffer.c:71 lock_buffer include/linux/buffer_head.h:385 [inline] hfs_mdb_commit+0x9fc/0xf2c fs/hfs/mdb.c:325 flush_mdb+0x6c/0x9c fs/hfs/super.c:66 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e513840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 2 locks held by kworker/1:2/2121: #0: ffff0000c0021538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff80009c127c20 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 2 locks held by getty/5848: #0: ffff0000d27290a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094c302f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2206 =============================================