Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout INFO: task syz-executor.1:15241 blocked for more than 140 seconds. Not tainted 4.19.154-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28240 15241 12351 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: 0033:0x4179b1 Code: Bad RIP value. RSP: 002b:00007f273e54a820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004179b1 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f273e54a850 RBP: 000000000118bf60 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000118bf2c R13: 00007fffb2401eaf R14: 00007f273e54b9c0 R15: 000000000118bf2c Showing all locks held in the system: 1 lock held by khungtaskd/1565: #0: 00000000c3d2bdd9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 5 locks held by kworker/1:2/3507: #0: 00000000028c1039 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000c658c09c ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 000000009710be45 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 000000009710be45 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 #3: 00000000385c0130 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 00000000385c0130 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 00000000385c0130 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 00000000385c0130 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 00000000385c0130 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 #4: 0000000001479b4c (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 1 lock held by in:imklog/7735: #0: 000000009ef70d81 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/u4:12/14835: #0: 000000005356d61c (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9701 [inline] #0: 000000005356d61c (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6840 #1: 00000000c3d2bdd9 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:927 [inline] #1: 00000000c3d2bdd9 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 #2: 0000000061dc7206 (&(&bat_priv->mcast.mla_lock)->rlock){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #2: 0000000061dc7206 (&(&bat_priv->mcast.mla_lock)->rlock){+.+.}, at: batadv_mcast_mla_update+0xad/0x1bf0 net/batman-adv/multicast.c:653 1 lock held by syz-executor.1/15241: #0: 000000009710be45 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #0: 000000009710be45 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1565 Comm: khungtaskd Not tainted 4.19.154-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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12225 Comm: kworker/u4:7 Not tainted 4.19.154-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy18 ieee80211_iface_work RIP: 0010:__mutex_trylock_or_owner kernel/locking/mutex.c:99 [inline] RIP: 0010:__mutex_trylock kernel/locking/mutex.c:125 [inline] RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:927 [inline] RIP: 0010:__mutex_lock+0x109/0x1260 kernel/locking/mutex.c:1072 Code: e8 bc 3c 86 f9 4c 89 f8 5f 48 c1 e8 03 65 4c 8b 24 25 80 df 01 00 80 3c 18 00 0f 85 bf 0f 00 00 49 c7 c5 20 a7 23 8d 4d 8b 37 <48> b8 00 00 00 00 00 fc ff df 4c 89 ed 48 c1 ed 03 48 01 c5 4c 89 RSP: 0018:ffff8880552cf908 EFLAGS: 00000246 RAX: 1ffff1100aca7309 RBX: dffffc0000000000 RCX: ffffffff8814a7d4 RDX: ffffed100aca730a RSI: 0000000000000008 RDI: ffffffff87ba17a9 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100aca7309 R10: ffff88805653984f R11: 0000000000000000 R12: ffff888061490500 R13: ffffffff8d23a720 R14: 0000000000000000 R15: ffff888056539848 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9c77684020 CR3: 00000000aad7a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sdata_lock net/mac80211/ieee80211_i.h:990 [inline] ieee80211_ibss_rx_queued_mgmt+0xe9/0x18b0 net/mac80211/ibss.c:1623 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1345 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415