INFO: task syz-executor:6516 blocked for more than 146 seconds. Not tainted 6.16.0-rc4-syzkaller-g3cd1604f930f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6516 tgid:6516 ppid:1 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 io_schedule+0x84/0xf0 kernel/sched/core.c:7723 folio_wait_bit_common+0x56c/0x9e0 mm/filemap.c:1317 __folio_lock+0x2c/0x3c mm/filemap.c:1675 folio_lock include/linux/pagemap.h:1114 [inline] truncate_inode_pages_range+0x8d4/0xe18 mm/truncate.c:433 truncate_inode_pages mm/truncate.c:460 [inline] truncate_inode_pages_final+0x8c/0xbc mm/truncate.c:495 evict+0x420/0x928 fs/inode.c:812 dispose_list fs/inode.c:852 [inline] evict_inodes+0x650/0x6e8 fs/inode.c:906 generic_shutdown_super+0xa0/0x2b8 fs/super.c:628 kill_block_super+0x44/0x90 fs/super.c:1755 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:600 Showing all locks held in the system: 1 lock held by kthreadd/2: 3 locks held by kworker/u8:0/12: 2 locks held by kworker/u8:1/13: 2 locks held by kworker/1:0/24: 3 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f839a00 (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: 5 locks held by kworker/u9:0/52: #0: ffff000103f8f148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff800099177bc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000c8cd4dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:331 #3: ffff0000c8cd40b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1a0/0xb8c net/bluetooth/hci_sync.c:5626 #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2053 [inline] #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x318 net/bluetooth/hci_conn.c:1275 3 locks held by kworker/u8:4/164: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009bbe7bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:5/330: 3 locks held by kworker/u8:6/541: 3 locks held by kworker/u8:7/543: 4 locks held by kworker/u8:8/562: 4 locks held by kworker/u8:9/572: 2 locks held by kworker/0:2/2276: 3 locks held by kworker/R-ipv6_/4161: #0: ffff0000d282e148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a34e7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 4 locks held by kworker/R-bat_e/4242: 6 locks held by kworker/u9:1/6080: #0: ffff0000cbde1148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a4cd7bc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000daa38dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:331 #3: ffff0000daa380b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1a0/0xb8c net/bluetooth/hci_sync.c:5626 #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2053 [inline] #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x318 net/bluetooth/hci_conn.c:1275 #5: ffff0000cbde0338 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x74/0x5f0 net/bluetooth/l2cap_core.c:1762 1 lock held by klogd/6116: 1 lock held by udevd/6127: 1 lock held by crond/6256: 2 locks held by getty/6272: #0: ffff0000d306f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b9ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6501: 2 locks held by syz-executor/6511: #0: ffff0000dd6760e0 (&type->s_umount_key#108){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000dd6760e0 (&type->s_umount_key#108){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000dd6760e0 (&type->s_umount_key#108){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff0000f1a80278 (&c->state_lock){++++}-{4:4}, at: __bch2_fs_stop+0xfc/0x800 fs/bcachefs/super.c:676 5 locks held by kworker/u9:2/6512: #0: ffff0000cb377148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3777bc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000c7e98dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:331 #3: ffff0000c7e980b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1a0/0xb8c net/bluetooth/hci_sync.c:5626 #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2053 [inline] #4: ffff8000929faf48 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x13c/0x318 net/bluetooth/hci_conn.c:1275 1 lock held by syz-executor/6516: #0: ffff0000f6cf60e0 (&type->s_umount_key#107){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000f6cf60e0 (&type->s_umount_key#107){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000f6cf60e0 (&type->s_umount_key#107){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 4 locks held by kworker/u9:4/6521: #0: ffff0000cd415148 ((wq_completion)hci1#3){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3627bc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000dcdccdc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:331 #3: ffff0000dcdcc0b8 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x1a0/0xb8c net/bluetooth/hci_sync.c:5626 2 locks held by kworker/1:3/6559: 3 locks held by kworker/0:6/6580: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3357bc0 ((work_completion)(&aux->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/1:4/6587: 2 locks held by kworker/1:5/6595: 2 locks held by kworker/1:6/6617: 3 locks held by kworker/u8:10/6633: 3 locks held by kworker/u8:11/7002: 3 locks held by syz-executor/7897: 2 locks held by syz-executor/8097: 2 locks held by syz-executor/8149: 1 lock held by udevd/8432: 2 locks held by syz-executor/8822: #0: ffff8000916c8420 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 3 locks held by dhcpcd-run-hook/8986: 2 locks held by syz.5.370/8997: 3 locks held by kworker/u8:12/8999: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3347bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928924e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:13/9000: =============================================