INFO: task kworker/u5:2:3638 blocked for more than 143 seconds. Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u5:2 state:D stack:26448 pid: 3638 ppid: 2 flags:0x00004000 Workqueue: hci0 hci_power_on Call Trace: context_switch kernel/sched/core.c:5184 [inline] __schedule+0xa09/0x4f10 kernel/sched/core.c:6496 schedule+0xd2/0x1f0 kernel/sched/core.c:6568 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 __flush_work+0x56c/0xb10 kernel/workqueue.c:3075 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3162 hci_dev_close_sync+0x88/0x1140 net/bluetooth/hci_sync.c:4115 hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:553 hci_power_on+0x1bb/0x630 net/bluetooth/hci_core.c:988 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task syz-executor.4:32462 blocked for more than 143 seconds. Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28008 pid:32462 ppid: 1 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5184 [inline] __schedule+0xa09/0x4f10 kernel/sched/core.c:6496 schedule+0xd2/0x1f0 kernel/sched/core.c:6568 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 __flush_workqueue+0x3ed/0x13a0 kernel/workqueue.c:2861 hci_dev_open+0xdb/0x300 net/bluetooth/hci_core.c:526 hci_sock_ioctl+0x627/0x910 net/bluetooth/hci_sock.c:1034 sock_do_ioctl+0xcc/0x230 net/socket.c:1169 sock_ioctl+0x2f1/0x640 net/socket.c:1286 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f0a1d088fc7 RSP: 002b:00007fff638db8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fff638dbf98 RCX: 00007f0a1d088fc7 RDX: 0000000000000000 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f0a1c7ff700 R09: 00007f0a1c7ff700 R10: 00007f0a1c7ff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fff638dba30 R14: 00007f0a1d19c9b8 R15: 000000000000000c Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8bd864f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8bd861f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffffffff8bd87040 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 2 locks held by getty/3280: #0: ffff8881477f7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002d162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2177 3 locks held by kworker/u5:2/3638: #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88806f02d138 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000303fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88807ac09048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x25/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:0/27176: #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888077e0d138 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003f9fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888047881048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x25/0x70 net/bluetooth/hci_core.c:551 2 locks held by kworker/u4:10/29021: 3 locks held by kworker/u5:3/29963: #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888016bfd138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90002dffda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888047885048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x25/0x70 net/bluetooth/hci_core.c:551 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc18/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 29021 Comm: kworker/u4:10 Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_wait_context kernel/locking/lockdep.c:4750 [inline] RIP: 0010:__lock_acquire+0x68c/0x5660 kernel/locking/lockdep.c:5003 Code: 74 06 0f 8e 76 2c 00 00 0f b6 80 b8 00 00 00 84 c0 74 06 40 38 c5 0f 47 e8 48 8b 04 24 41 83 c4 01 48 c1 e8 03 42 0f b6 04 38 <84> c0 74 08 3c 03 0f 8e 3a 2c 00 00 45 3b a5 48 0a 00 00 0f 8d 99 RSP: 0018:ffffc9000aa57a38 EFLAGS: 00000802 RAX: 0000000000000000 RBX: 000000000000074e RCX: ffffffff815e2cc2 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff906fd898 RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff906a5a2f R10: fffffbfff20d4b45 R11: 0000000000000001 R12: 0000000000000002 R13: ffff888042cc8000 R14: ffff888042cc8a50 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001cb3000 CR3: 0000000026d23000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 rcu_lock_acquire include/linux/rcupdate.h:280 [inline] rcu_read_lock include/linux/rcupdate.h:706 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302