INFO: task syz.3.53:6808 blocked for more than 144 seconds.
      Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.53        state:D stack:0     pid:6808  tgid:6805  ppid:6470   task_flags:0x400140 flags:0x00000009
Call trace:
 __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6860
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917
 __mutex_lock_common+0xda8/0x2604 kernel/locking/mutex.c:678
 __mutex_lock kernel/locking/mutex.c:746 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798
 bio_find_or_create_slab block/bio.c:122 [inline]
 bioset_init+0x1d0/0x6cc block/bio.c:1705
 bch2_fs_alloc fs/bcachefs/super.c:926 [inline]
 bch2_fs_open+0x2000/0x2a48 fs/bcachefs/super.c:2219
 bch2_fs_get_tree+0x598/0x12cc fs/bcachefs/fs.c:2172
 vfs_get_tree+0x90/0x28c fs/super.c:1759
 do_new_mount+0x278/0x900 fs/namespace.c:3879
 path_mount+0x590/0xe04 fs/namespace.c:4206
 do_mount fs/namespace.c:4219 [inline]
 __do_sys_mount fs/namespace.c:4430 [inline]
 __se_sys_mount fs/namespace.c:4407 [inline]
 __arm64_sys_mount+0x4f4/0x5d0 fs/namespace.c:4407
 __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
INFO: task syz.3.53:6808 is blocked on a mutex likely owned by task syz-executor:6483.
task:syz-executor    state:R  running task     stack:0     pid:6483  tgid:6483  ppid:6466   task_flags:0x400140 flags:0x0000000c
Call trace:
 __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767
 preempt_schedule_common+0xe8/0x1dc kernel/sched/core.c:6947
 preempt_schedule+0x60/0x80 kernel/sched/core.c:6971
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:194
 kasan_quarantine_remove_cache+0x248/0x3f0 mm/kasan/quarantine.c:372
 kasan_cache_shutdown+0x24/0x34 mm/kasan/generic.c:212
 kmem_cache_destroy+0x80/0x174 mm/slab_common.c:521
 bio_put_slab block/bio.c:155 [inline]
 bioset_exit+0x328/0x42c block/bio.c:1664
 bch2_fs_fs_io_direct_exit+0x30/0x40 fs/bcachefs/fs-io-direct.c:685
 __bch2_fs_free fs/bcachefs/super.c:565 [inline]
 bch2_fs_release+0x1b8/0x720 fs/bcachefs/super.c:631
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2a8/0x41c lib/kobject.c:737
 bch2_fs_free+0x314/0x384 fs/bcachefs/super.c:694
 bch2_kill_sb+0x48/0x58 fs/bcachefs/fs.c:2304
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1435
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442
 task_work_run+0x230/0x2e0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 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:
2 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/14:
4 locks held by kworker/1:1/26:
 #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
 #1: ffff800098337b80 (reg_work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
 #2: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
 #3: ffff0000f1f58768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline]
 #3: ffff0000f1f58768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xcc/0x1d0 net/wireless/reg.c:3209
1 lock held by khungtaskd/32:
 #0: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330