INFO: task syz.4.786:8899 blocked for more than 145 seconds.
      Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.786       state:D stack:0     pid:8899  tgid:8898  ppid:6442   task_flags:0x400140 flags:0x00000009
Call trace:
 __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x1360/0x257c kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6857
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6914
 __mutex_lock_common+0xd30/0x24b8 kernel/locking/mutex.c:662
 __mutex_lock kernel/locking/mutex.c:730 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:782
 bio_find_or_create_slab block/bio.c:122 [inline]
 bioset_init+0x1d0/0x6cc block/bio.c:1703
 bch2_fs_alloc fs/bcachefs/super.c:899 [inline]
 bch2_fs_open+0x1f54/0x299c fs/bcachefs/super.c:2064
 bch2_fs_get_tree+0x58c/0x11d4 fs/bcachefs/fs.c:2190
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3560
 path_mount+0x590/0xe04 fs/namespace.c:3887
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount fs/namespace.c:4088 [inline]
 __arm64_sys_mount+0x4f4/0x5d0 fs/namespace.c:4088
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Showing all locks held in the system:
1 lock held by kthreadd/2:
3 locks held by kworker/u8:0/12:
 #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
 #1: ffff800097d47ba0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
 #2: ffff800092b72768 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by khungtaskd/32:
 #0: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336
2 locks held by syslogd/6044:
1 lock held by klogd/6048:
1 lock held by udevd/6059:
1 lock held by dhcpcd/6113:
2 locks held by getty/6206:
 #0: ffff0000d24ad0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bcae2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6430:
3 locks held by syz-executor/6443:
 #0: ffff8000904af628 (bio_slab_lock){+.+.}-{4:4}, at: bio_put_slab block/bio.c:140 [inline]
 #0: ffff8000904af628 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x240/0x434 block/bio.c:1662
 #1: ffff80008fc3f7f0 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x44/0x174 mm/slab_common.c:517
 #2: ffff80008fe7b520 (slab_mutex){+.+.}-{4:4}, at: kmem_cache_destroy+0x54/0x174 mm/slab_common.c:518
2 locks held by syz-executor/6446:
1 lock held by syz-executor/6447:
1 lock held by syz.4.786/8899:
 #0: ffff8000904af628 (bio_slab_lock){+.+.}-{4:4}, at: bio_find_or_create_slab block/bio.c:122 [inline]
 #0: ffff8000904af628 (bio_slab_lock){+.+.}-{4:4}, at: bioset_init+0x1d0/0x6cc block/bio.c:1703
2 locks held by syz.0.795/8937:
3 locks held by udevadm/8940:
3 locks held by kworker/u8:11/8943:
1 lock held by syz-executor/8948:

=============================================