Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout INFO: task syz-executor.3:10813 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D25744 10813 8149 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 device_lock include/linux/device.h:1173 [inline] usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x417c51 Code: Bad RIP value. RSP: 002b:00007f820680b810 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000417c51 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f820680b840 RBP: 000000000119bfc0 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000293 R12: 000000000119bf8c R13: 00007ffe6d45ef1f R14: 00007f820680c9c0 R15: 000000000119bf8c INFO: task syz-executor.3:10846 blocked for more than 140 seconds. Not tainted 4.19.163-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29496 10846 8149 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 device_lock include/linux/device.h:1173 [inline] usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x417c51 Code: Bad RIP value. RSP: 002b:00007f8206787810 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000417c51 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f8206787840 RBP: 000000000119c260 R08: 000000000000000f R09: 0000000000000000 R10: 00007f82067889d0 R11: 0000000000000293 R12: 000000000119c22c R13: 00007ffe6d45ef1f R14: 00007f82067889c0 R15: 000000000119c22c Showing all locks held in the system: 1 lock held by khungtaskd/1566: #0: 000000008205488f (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 5 locks held by kworker/0:2/3686: #0: 000000002017cb12 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 000000006f81d3a4 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 0000000070651257 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 0000000070651257 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 #3: 00000000979aabf8 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 00000000979aabf8 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 00000000979aabf8 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 00000000979aabf8 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 00000000979aabf8 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 #4: 0000000084669cb4 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 1 lock held by in:imklog/7807: 1 lock held by syz-executor.3/10813: #0: 0000000070651257 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #0: 0000000070651257 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.3/10846: #0: 0000000070651257 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #0: 0000000070651257 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1566 Comm: khungtaskd Not tainted 4.19.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7808 Comm: rs:main Q:Reg Not tainted 4.19.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:list_add_tail include/linux/list.h:93 [inline] RIP: 0010:plist_add+0x2b8/0x4a0 lib/plist.c:102 Code: 01 00 00 4c 89 fa 4d 89 7e 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a4 01 00 00 48 8b 44 24 18 49 89 07 13 15 55 f9 48 8b 44 24 08 48 8d 68 08 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88809feef988 EFLAGS: 00000246 RAX: ffffc90000c7be40 RBX: ffffc90000c7be40 RCX: ffffffff8159f5e2 RDX: 1ffff9200018f7c8 RSI: ffffffff880fb8ce RDI: ffff88809feefb40 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1014431412 R10: ffff8880a218a097 R11: 0000000000000000 R12: ffff88809feefb58 R13: ffffc90000c7be00 R14: ffff88809feefb40 R15: dffffc0000000000 FS: 00007f63d4ec8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feba16d54e0 CR3: 00000000a9198000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __queue_me kernel/futex.c:2270 [inline] queue_me kernel/futex.c:2289 [inline] futex_wait_queue_me+0x1be/0x5e0 kernel/futex.c:2625 futex_wait+0x1ef/0x590 kernel/futex.c:2757 do_futex+0x15b/0x1c70 kernel/futex.c:3724 __do_sys_futex kernel/futex.c:3785 [inline] __se_sys_futex+0x28f/0x3b0 kernel/futex.c:3753 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f63d790917f Code: 30 83 f8 20 75 15 be 8b 00 00 00 b8 ca 00 00 00 0f 05 83 f8 00 41 0f 94 c0 eb 0f be 80 00 00 00 45 30 c0 b8 ca 00 00 00 0f 05 <8b> 3c 24 e8 49 2d 00 00 48 8b 7c 24 08 be 01 00 00 00 31 c0 f0 0f RSP: 002b:00007f63d4ec7c70 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f63d790917f RDX: 0000000000000631 RSI: 0000000000000080 RDI: 0000561d717e828c RBP: 0000561d717e8288 R08: 0000561d717e8000 R09: 0000000000000318 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63d4ec7cd0 R13: 0000000000000000 R14: 0000561d70509290 R15: 0000000000000000