INFO: task syz-executor:6528 blocked for more than 143 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6528 tgid:6528 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:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 __bch2_fs_stop+0x5f8/0x800 fs/bcachefs/super.c:696 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:1417 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424 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: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA0/43: 2 locks held by kworker/u8:4/232: 3 locks held by kworker/u8:8/2006: #0: ffff0000c18a2148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0337bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928bb010 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x6c0 net/core/net_namespace.c:662 2 locks held by getty/6301: #0: ffff0000d2a4c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba3e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6528: #0: ffff0000d1f6c0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d1f6c0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d1f6c0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 6 locks held by kworker/1:3/6536: #0: ffff0000c276e948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a1487bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000cd6fa198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #2: ffff0000cd6fa198 (&dev->mutex){....}-{4:4}, at: hub_event+0x140/0x3c78 drivers/usb/core/hub.c:5898 #3: ffff0000cd6fd520 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3251 [inline] #3: ffff0000cd6fd520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5463 [inline] #3: ffff0000cd6fd520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #3: ffff0000cd6fd520 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #3: ffff0000cd6fd520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x1b68/0x3c78 drivers/usb/core/hub.c:5952 #4: ffff0000cd5e8a68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5464 [inline] #4: ffff0000cd5e8a68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #4: ffff0000cd5e8a68 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #4: ffff0000cd5e8a68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x1b90/0x3c78 drivers/usb/core/hub.c:5952 #5: ffff80009194a250 (ehci_cf_port_reset_rwsem){.+.+}-{4:4}, at: hub_port_reset+0x10c/0x12f4 drivers/usb/core/hub.c:3066 3 locks held by kworker/u9:8/6545: #0: ffff0000dcb05148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a4437bc0 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000cb940dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_open net/bluetooth/hci_core.c:428 [inline] #2: ffff0000cb940dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_power_on+0x144/0x628 net/bluetooth/hci_core.c:959 2 locks held by syz.4.1125/10421: #0: ffff0000dd5600a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_write+0x3c/0x4c drivers/tty/tty_ldsem.c:366 #1: ffff0000dd5670a0 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: ldsem_down_write_nested+0x44/0x58 drivers/tty/tty_ldsem.c:410 1 lock held by syz.2.1136/10450: #0: ffff0000f14e04d8 (&nft_net->commit_mutex){+.+.}-{4:4}, at: nf_tables_valid_genid+0x44/0x11c net/netfilter/nf_tables_api.c:11446 =============================================