INFO: task syz-executor.1:8522 blocked for more than 143 seconds. Not tainted 6.1.90-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:8522 ppid:6052 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 rwsem_down_write_slowpath+0xc80/0x156c kernel/locking/rwsem.c:1189 __down_write_common kernel/locking/rwsem.c:1314 [inline] __down_write kernel/locking/rwsem.c:1323 [inline] down_write+0x84/0x88 kernel/locking/rwsem.c:1574 inode_lock include/linux/fs.h:758 [inline] open_last_lookups fs/namei.c:3549 [inline] path_openat+0x5ec/0x2548 fs/namei.c:3782 do_filp_open+0x1bc/0x3cc fs/namei.c:3812 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 2 locks held by kworker/u4:1/11: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff800019e47c20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 1 lock held by rcu_tasks_kthre/12: #0: ffff800015a14e70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by rcu_tasks_trace/13: #0: ffff800015a15670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by khungtaskd/28: #0: ffff800015a14ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/3995: #0: ffff0000d5eae098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001bce02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188 2 locks held by kworker/u4:8/5006: 2 locks held by syz-executor.1/8516: 2 locks held by syz-executor.1/8522: #0: ffff0000ef22c460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000e2568188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000e2568188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: open_last_lookups fs/namei.c:3549 [inline] #1: ffff0000e2568188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: path_openat+0x5ec/0x2548 fs/namei.c:3782 2 locks held by syz-executor.3/8769: 2 locks held by syz-executor.3/8776: #0: ffff0000d6308460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff00011d7dc188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff00011d7dc188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: open_last_lookups fs/namei.c:3549 [inline] #1: ffff00011d7dc188 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: path_openat+0x5ec/0x2548 fs/namei.c:3782 2 locks held by syz-executor.0/8951: 2 locks held by syz-executor.0/8957: #0: ffff0000f3b06460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000e25686d0 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000e25686d0 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: open_last_lookups fs/namei.c:3549 [inline] #1: ffff0000e25686d0 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: path_openat+0x5ec/0x2548 fs/namei.c:3782 3 locks held by syz-executor.0/9118: #0: ffff00011770d0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:552 [inline] #0: ffff00011770d0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1e0/0x4ac net/bluetooth/hci_core.c:2738 #1: ffff00011770c078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x39c/0xf6c net/bluetooth/hci_sync.c:5005 #2: ffff800017f6e2c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1805 [inline] #2: ffff800017f6e2c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb0/0x27c net/bluetooth/hci_conn.c:2441 1 lock held by syz-executor.4/9177: 4 locks held by syz-executor.2/9640: 2 locks held by syz-executor.0/9641: #0: ffff800017e20e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff800017e20e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 net/core/rtnetlink.c:6118 #1: ffff800015a1a278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #1: ffff800015a1a278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e0/0x77c kernel/rcu/tree_exp.h:962 3 locks held by syz-executor.1/9652: =============================================