INFO: task syz-executor.0:7650 blocked for more than 143 seconds. Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:7650 ppid:7638 flags:0x00000001 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5209 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6521 schedule+0x64/0xa4 kernel/sched/core.c:6597 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x84/0x88 kernel/locking/rwsem.c:1563 grab_super+0x44/0x140 fs/super.c:386 sget+0xe0/0x268 fs/super.c:635 mount_bdev+0xcc/0x210 fs/super.c:1372 bfs_mount+0x44/0x58 fs/bfs/inode.c:455 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1531 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x890 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d4a4768 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d4a4db8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d4a4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303 2 locks held by getty/2754: #0: ffff0000c82e6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6be2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 3 locks held by kworker/0:1/3126: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800010fcbd80 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000f04bc18 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed lib/debugobjects.c:977 [inline] #2: ffff80000f04bc18 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_check_no_obj_freed+0x120/0x2b0 lib/debugobjects.c:1020 2 locks held by kworker/u4:5/3214: 2 locks held by kworker/u4:16/3987: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff8000140fbd80 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 2 locks held by kworker/u4:18/4384: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff8000143fbd80 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 1 lock held by syz-executor.1/4641: 1 lock held by syz-executor.1/4776: 3 locks held by kworker/1:12/6471: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800014353d80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d924720 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x28/0xcc net/rfkill/core.c:181 1 lock held by syz-executor.0/7504: #0: ffff000146ef60e0 (&type->s_umount_key#81/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228 2 locks held by syz-executor.0/7650: #0: ffff0000c6351aa0 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1366 #1: ffff000146ef60e0 (&type->s_umount_key#82){++++}-{3:3}, at: grab_super+0x44/0x140 fs/super.c:386 1 lock held by syz-executor.0/7735: #0: ffff0000c6351aa0 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1366 2 locks held by kworker/u4:24/8581: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800014263d80 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 4 locks held by syz-executor.5/8639: #0: ffff80000d924720 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18c/0x3f8 net/rfkill/core.c:1278 #1: ffff0000cb70f028 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:552 [inline] #1: ffff0000cb70f028 (&hdev->req_lock){+.+.}-{3:3}, at: hci_rfkill_set_block+0x90/0x198 net/bluetooth/hci_core.c:956 #2: ffff0000cb70e078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x278/0xa98 net/bluetooth/hci_sync.c:4811 #3: ffff80000d8c3cb8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1784 [inline] #3: ffff80000d8c3cb8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0x64/0x148 net/bluetooth/hci_conn.c:2436 1 lock held by syz-executor.2/8662: #0: ffff00011ba4ccd0 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #0: ffff00011ba4ccd0 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline] #0: ffff00011ba4ccd0 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x40/0xf0 net/socket.c:1365 2 locks held by syz-executor.4/8673: #0: ffff00012f4e2a50 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #0: ffff00012f4e2a50 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline] #0: ffff00012f4e2a50 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x40/0xf0 net/socket.c:1365 #1: ffff00013b51b930 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline] #1: ffff00013b51b930 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: pptp_release+0x30/0x1c8 drivers/net/ppp/pptp.c:499 1 lock held by syz-executor.0/8696: #0: ffff000146ef60e0 (&type->s_umount_key#82){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 =============================================