INFO: task syz-executor.4:5472 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:5472 ppid:4253 flags:0x0000000c 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 io_schedule+0x8c/0x188 kernel/sched/core.c:8786 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1296 __folio_lock mm/filemap.c:1659 [inline] folio_lock include/linux/pagemap.h:974 [inline] __filemap_get_folio+0x5ac/0xb6c mm/filemap.c:1931 truncate_inode_pages_range+0x47c/0xf10 mm/truncate.c:377 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x134/0x280 block/bdev.c:664 blkdev_put_whole block/bdev.c:695 [inline] blkdev_put+0x464/0x6e0 block/bdev.c:955 blkdev_close+0x58/0x94 block/fops.c:514 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x554/0x1a88 kernel/exit.c:869 do_group_exit+0x194/0x22c kernel/exit.c:1019 get_signal+0x14a0/0x158c kernel/signal.c:2862 do_signal arch/arm64/kernel/signal.c:1076 [inline] do_notify_resume+0x3ac/0x3474 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 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: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015a24e70 (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: ffff800015a25670 (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: ffff800015a24ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/3979: #0: ffff0000d660b098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001bcf02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188 1 lock held by syz-fuzzer/4231: 4 locks held by kworker/u4:7/4413: 1 lock held by syz-executor.4/5472: #0: ffff0000cec324c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x6e0 block/bdev.c:913 1 lock held by syz-executor.4/9967: #0: ffff0000cec324c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8ec block/bdev.c:815 1 lock held by syz-executor.1/10161: 1 lock held by syz-executor.1/10168: #0: ffff0000c2c96f70 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_ip_getsockopt+0x330/0x2168 net/ipv4/ip_sockglue.c:1572 1 lock held by syz-executor.1/10175: #0: ffff0000c2c96f70 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt+0x344/0x1fd4 net/ipv4/tcp.c:3554 2 locks held by kworker/1:9/10189: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff8000223b7c20 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 3 locks held by kworker/1:10/10190: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff80001e037c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 #2: ffff0000cccd6240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by syz-executor.3/10254: #0: ffff0000c35d00e0 (&type->s_umount_key#65/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 3 locks held by syz-executor.4/10262: #0: ffff0000ce2c10b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:552 [inline] #0: ffff0000ce2c10b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1d8/0x4a4 net/bluetooth/hci_core.c:2736 #1: ffff0000ce2c0078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x39c/0xf6c net/bluetooth/hci_sync.c:5005 #2: ffff800017f7ee88 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1805 [inline] #2: ffff800017f7ee88 (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.0/10265: =============================================