INFO: task syz-executor:6570 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6570 tgid:6570 ppid:1 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 io_schedule+0x84/0xf4 kernel/sched/core.c:7789 folio_wait_bit_common+0x56c/0x9e0 mm/filemap.c:1323 __folio_lock mm/filemap.c:1699 [inline] folio_lock include/linux/pagemap.h:1159 [inline] __filemap_get_folio_mpol+0x1ec/0xc3c mm/filemap.c:1954 __filemap_get_folio include/linux/pagemap.h:763 [inline] truncate_inode_pages_range+0x390/0xdec mm/truncate.c:413 truncate_inode_pages mm/truncate.c:485 [inline] truncate_inode_pages_final+0x8c/0xbc mm/truncate.c:520 evict+0x4ec/0xa74 fs/inode.c:839 dispose_list fs/inode.c:879 [inline] evict_inodes+0x774/0x80c fs/inode.c:933 generic_shutdown_super+0xa0/0x2b8 fs/super.c:628 kill_block_super+0x44/0x90 fs/super.c:1722 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by kthreadd/2: 2 locks held by kworker/0:0/9: 3 locks held by kworker/u8:0/12: 7 locks held by kworker/u8:1/13: 3 locks held by kworker/1:0/24: #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff800097dc7be0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by khungtaskd/32: #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 1 lock held by pr/ttyAMA-1/43: 5 locks held by kworker/u9:0/53: #0: ffff0000dda50948 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff800099467be0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000cd590ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x38c net/bluetooth/hci_sync.c:331 #3: ffff0000cd5900c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d4/0xbb8 net/bluetooth/hci_sync.c:5702 #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline] #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x340 net/bluetooth/hci_conn.c:1336 3 locks held by kworker/u8:4/261: #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff800099e57be0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:5/328: 3 locks held by kworker/u8:6/715: 3 locks held by kworker/u8:7/840: 3 locks held by kworker/u8:8/1463: 3 locks held by kworker/u8:9/1837: 3 locks held by kworker/u8:10/2126: 3 locks held by kworker/u8:11/2885: 3 locks held by kworker/u8:12/3139: 3 locks held by kworker/u8:13/3222: 2 locks held by kworker/u8:14/3437: 3 locks held by kworker/u8:15/3563: #0: ffff0000c0031948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a35d7be0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:16/4163: 3 locks held by kworker/R-ipv6_/4250: #0: ffff0000d5233148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a3607bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:17/4506: 4 locks held by kworker/u8:18/4927: 3 locks held by kworker/u8:19/5128: 3 locks held by kworker/u8:20/5180: 2 locks held by kworker/u8:21/5230: 3 locks held by kworker/u8:22/6139: 1 lock held by udevd/6212: 1 lock held by dhcpcd/6267: 2 locks held by getty/6356: #0: ffff0000d4b870a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6560: 1 lock held by syz-executor/6570: #0: ffff0000ef1880e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000ef1880e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000ef1880e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 5 locks held by kworker/u9:2/6571: #0: ffff0000da395148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a5347be0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000c91d4ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x38c net/bluetooth/hci_sync.c:331 #3: ffff0000c91d40c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d4/0xbb8 net/bluetooth/hci_sync.c:5702 #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline] #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x340 net/bluetooth/hci_conn.c:1336 2 locks held by kworker/1:3/6575: 5 locks held by kworker/u9:3/6576: #0: ffff0000e22f7148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a44e7be0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000dee50ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x38c net/bluetooth/hci_sync.c:331 #3: ffff0000dee500c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d4/0xbb8 net/bluetooth/hci_sync.c:5702 #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline] #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x340 net/bluetooth/hci_conn.c:1336 4 locks held by kworker/u9:4/6578: #0: ffff0000e1bc8148 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a44a7be0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000c6ce8ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x38c net/bluetooth/hci_sync.c:331 #3: ffff0000c6ce80c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d4/0xbb8 net/bluetooth/hci_sync.c:5702 6 locks held by kworker/u9:5/6579: #0: ffff0000de298948 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a4497be0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000fb788ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x38c net/bluetooth/hci_sync.c:331 #3: ffff0000fb7880c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1d4/0xbb8 net/bluetooth/hci_sync.c:5702 #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline] #4: ffff800092c4fbc8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x340 net/bluetooth/hci_conn.c:1336 #5: ffff0000d6630b38 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x78/0x53c net/bluetooth/l2cap_core.c:1763 2 locks held by kworker/1:4/6620: 2 locks held by kworker/0:4/6685: 2 locks held by kworker/0:5/6933: 1 lock held by syz-executor/7857: 2 locks held by kworker/u8:23/8010: 2 locks held by kworker/0:9/8410: 2 locks held by syz-executor/8412: 3 locks held by syz.8.253/8435: 1 lock held by syz.3.256/8437: #0: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by btrfs-transacti/8465: 2 locks held by syz.6.259/8473: #0: ffff80008f872108 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:184 #1: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x71c/0x15e8 net/core/rtnetlink.c:4071 1 lock held by syz.6.259/8482: #0: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:24/8484: 2 locks held by kworker/0:10/8485: 2 locks held by kworker/0:11/8488: 4 locks held by kworker/u8:26/8489: =============================================