INFO: task kworker/u5:1:3641 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u5:1 state:D stack:26744 pid: 3641 ppid: 2 flags:0x00004000 Workqueue: hci0 hci_power_on Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x8d/0x1150 net/bluetooth/hci_sync.c:4091 hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553 hci_power_on+0x1c0/0x630 net/bluetooth/hci_core.c:981 process_one_work+0x996/0x1610 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 kworker/u5:6:3654 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u5:6 state:D stack:27536 pid: 3654 ppid: 2 flags:0x00004000 Workqueue: hci1 hci_power_on Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x8d/0x1150 net/bluetooth/hci_sync.c:4091 hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553 hci_power_on+0x1c0/0x630 net/bluetooth/hci_core.c:981 process_one_work+0x996/0x1610 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.0:32070 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28528 pid:32070 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7fc250088ec7 RSP: 002b:00007ffd07eafe08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffd07eb04c8 RCX: 00007fc250088ec7 RDX: 0000000000000000 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007fc24f7ff700 R09: 00007fc24f7ff700 R10: 00007fc24f7ff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd07eaff60 R14: 00007fc25019c9b8 R15: 000000000000000c INFO: task syz-executor.3:32075 blocked for more than 144 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29168 pid:32075 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7f834c688ec7 RSP: 002b:00007ffd9b0f7688 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffd9b0f7d48 RCX: 00007f834c688ec7 RDX: 0000000000000001 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f834bdff700 R09: 00007f834bdff700 R10: 00007f834bdff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd9b0f77e0 R14: 00007f834c79c9b8 R15: 000000000000000c INFO: task syz-executor.5:32076 blocked for more than 144 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28688 pid:32076 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7f496ec88ec7 RSP: 002b:00007ffd5e5cd8a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffd5e5cdf68 RCX: 00007f496ec88ec7 RDX: 0000000000000005 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f496e3ff700 R09: 00007f496e3ff700 R10: 00007f496e3ff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffd5e5cda00 R14: 00007f496ed9c9b8 R15: 000000000000000c INFO: task syz-executor.4:32077 blocked for more than 144 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28688 pid:32077 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7f2ff2888ec7 RSP: 002b:00007ffe95bc41e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffe95bc48a8 RCX: 00007f2ff2888ec7 RDX: 0000000000000004 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f2ff1fff700 R09: 00007f2ff1fff700 R10: 00007f2ff1fff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffe95bc4340 R14: 00007f2ff299c9b8 R15: 000000000000000c INFO: task syz-executor.2:32078 blocked for more than 145 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28528 pid:32078 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7f9175488ec7 RSP: 002b:00007fff5f06a988 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fff5f06b048 RCX: 00007f9175488ec7 RDX: 0000000000000002 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f9174bff700 R09: 00007f9174bff700 R10: 00007f9174bff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fff5f06aae0 R14: 00007f917559c9b8 R15: 000000000000000c INFO: task syz-executor.1:32079 blocked for more than 145 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28688 pid:32079 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x62c/0x910 net/bluetooth/hci_sock.c:1027 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: 0033:0x7f5afcc88ec7 RSP: 002b:00007ffea48a6228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffea48a68e8 RCX: 00007f5afcc88ec7 RDX: 0000000000000003 RSI: 00000000400448c9 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f5afc3ff700 R09: 00007f5afc3ff700 R10: 00007f5afc3ff9d0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffea48a6380 R14: 00007f5afcd9c9b8 R15: 000000000000000c INFO: task kworker/u5:0:32080 blocked for more than 145 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u5:0 state:D stack:28712 pid:32080 ppid: 2 flags:0x00004000 Workqueue: hci2 hci_power_on Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x8d/0x1150 net/bluetooth/hci_sync.c:4091 hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553 hci_power_on+0x1c0/0x630 net/bluetooth/hci_core.c:981 process_one_work+0x996/0x1610 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 kworker/u5:2:32114 blocked for more than 145 seconds. Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u5:2 state:D stack:28712 pid:32114 ppid: 2 flags:0x00004000 Workqueue: hci3 hci_power_on Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 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+0x8d/0x1150 net/bluetooth/hci_sync.c:4091 hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553 hci_power_on+0x1c0/0x630 net/bluetooth/hci_core.c:981 process_one_work+0x996/0x1610 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 Showing all locks held in the system: 1 lock held by khungtaskd/28: #0: ffffffff8bd83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 2 locks held by getty/3287: #0: ffff88814a946098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90001c382e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124 3 locks held by kworker/u5:1/3641: #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88807723a138 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900031c7da8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8880326ad048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:6/3654: #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888078ca2938 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900034c7da8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88807c805048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:0/32080: #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88806b24c938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003157da8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888016eb5048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:2/32114: #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88807b889938 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000404fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888016eb9048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:3/32115: #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff8880285ae938 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000407fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff888016ebd048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 3 locks held by kworker/u5:4/32120: #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888026659138 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900040efda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8880778c1048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #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+0xc1d/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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4617 Comm: kworker/u4:8 Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:341 [inline] RIP: 0010:rcu_is_watching+0x65/0xb0 kernel/rcu/tree.c:1138 Code: 48 03 1c ed e0 88 7f 8b 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 19 8b 03 83 e0 01 65 ff 0d 5b 3b 9e 7e 74 03 5b 5d c3 e8 RSP: 0018:ffffc900057078d8 EFLAGS: 00000206 RAX: 0000000000000003 RBX: ffff8880b9b3af90 RCX: ffffffff815d7d71 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffffffff8b7f88e8 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8dbae9d7 R10: fffffbfff1b75d3a R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000001 R14: 00000000000003c5 R15: ffffffff8bec0fc0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00530d010 CR3: 000000000ba8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:108 [inline] rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x560/0x780 kernel/locking/lockdep.c:5676 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:389 [inline] __text_poke+0x5d2/0x8e0 arch/x86/kernel/alternative.c:1113 text_poke arch/x86/kernel/alternative.c:1137 [inline] text_poke_bp_batch+0x44a/0x6c0 arch/x86/kernel/alternative.c:1483 text_poke_flush arch/x86/kernel/alternative.c:1589 [inline] text_poke_flush arch/x86/kernel/alternative.c:1586 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x32f/0x410 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177 static_key_enable+0x16/0x20 kernel/jump_label.c:190 toggle_allocation_gate mm/kfence/core.c:811 [inline] toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:803 process_one_work+0x996/0x1610 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 ---------------- Code disassembly (best guess): 0: 48 03 1c ed e0 88 7f add -0x74807720(,%rbp,8),%rbx 7: 8b 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 48 89 da mov %rbx,%rdx 15: 48 c1 ea 03 shr $0x3,%rdx 19: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 1d: 48 89 d8 mov %rbx,%rax 20: 83 e0 07 and $0x7,%eax 23: 83 c0 03 add $0x3,%eax 26: 38 d0 cmp %dl,%al 28: 7c 04 jl 0x2e * 2a: 84 d2 test %dl,%dl <-- trapping instruction 2c: 75 19 jne 0x47 2e: 8b 03 mov (%rbx),%eax 30: 83 e0 01 and $0x1,%eax 33: 65 ff 0d 5b 3b 9e 7e decl %gs:0x7e9e3b5b(%rip) # 0x7e9e3b95 3a: 74 03 je 0x3f 3c: 5b pop %rbx 3d: 5d pop %rbp 3e: c3 retq 3f: e8 .byte 0xe8