INFO: task syz-executor:6548 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6548  tgid:6548  ppid:1      task_flags:0x400140 flags:0x00000019
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7058
 __closure_sync+0x160/0x278 lib/closure.c:146
 closure_sync include/linux/closure.h:195 [inline]
 bch2_btree_interior_updates_flush+0x190/0x26c fs/bcachefs/btree_update_interior.c:2748
 __bch2_fs_read_only+0xf8/0x4dc fs/bcachefs/super.c:289
 bch2_fs_read_only+0x344/0x960 fs/bcachefs/super.c:366
 __bch2_fs_stop+0x104/0x800 fs/bcachefs/super.c:677
 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:2365
 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643
 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2618
 deactivate_locked_super+0xc4/0x12c fs/super.c:474
 deactivate_super+0xe0/0x100 fs/super.c:507
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1378
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1385
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
2 locks held by kworker/1:0H/25:
 #0: ffff0000f783bd48 ((wq_completion)bcachefs_btree_write_complete){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3210
 #1: ffff800097cf7bc0 ((work_completion)(&wb->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3210
1 lock held by khungtaskd/32:
 #0: ffff80008f9a9060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
1 lock held by pr/ttyAMA-1/43:
1 lock held by klogd/6154:
1 lock held by udevd/6165:
2 locks held by getty/6309:
 #0: ffff0000d85500a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bbae2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/6548:
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506
 #1: ffff0000fc580278 (&c->state_lock){++++}-{4:4}, at: __bch2_fs_stop+0xfc/0x800 fs/bcachefs/super.c:676
2 locks held by kworker/u8:9/7820:
 #0: ffff0000c6533148 ((wq_completion)btree_update){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3210
 #1: ffff8000a45e7bc0 ((work_completion)(&c->btree_interior_update_work)
){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3210
2 locks held by kworker/u8:10/8891:
1 lock held by syz.1.1002/10292:
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x240/0x32c fs/super.c:121
1 lock held by syz.6.1239/11087:
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff0000cf6740e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x240/0x32c fs/super.c:121
1 lock held by udevd/11942:
 #0: ffff0000c15507b8 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline]
 #0: ffff0000c15507b8 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:848
2 locks held by syz.2.1539/12156:
2 locks held by syz.4.1542/12165:
2 locks held by syz.3.1545/12174:
1 lock held by syz.3.1545/12175:
 #0: ffff0000d9894290 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:415 [inline]
 #0: ffff0000d9894290 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x10c/0x16b4 mm/mmap.c:1727
1 lock held by syz.7.1546/12176:

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