Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. executing program [ 487.908393][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 489.988189][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 492.068004][ T6597] Bluetooth: hci0: command 0x040f tx timeout [ 494.147732][ T6597] Bluetooth: hci0: command 0x0419 tx timeout [ 496.227497][ T6597] Bluetooth: hci0: command 0x0405 tx timeout [ 610.617889][ T6597] Bluetooth: hci0: command 0x0406 tx timeout [ 716.051712][ T26] INFO: task krfcommd:2893 blocked for more than 143 seconds. [ 716.059180][ T26] Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.066359][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.075080][ T26] task:krfcommd state:D stack:29640 pid: 2893 ppid: 2 flags:0x00004000 [ 716.084437][ T26] Call Trace: [ 716.087714][ T26] __schedule+0x93a/0x26f0 [ 716.092294][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.097587][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.102586][ T26] schedule+0xd3/0x270 [ 716.106655][ T26] schedule_preempt_disabled+0xf/0x20 [ 716.112063][ T26] __mutex_lock+0xa46/0x1300 [ 716.116655][ T26] ? rfcomm_run+0x2ed/0x4a20 [ 716.121335][ T26] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.126907][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.131866][ T26] rfcomm_run+0x2ed/0x4a20 [ 716.136276][ T26] ? find_held_lock+0x2d/0x110 [ 716.141036][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.146339][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.151216][ T26] ? __init_waitqueue_head+0xd0/0xd0 [ 716.156744][ T26] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 716.162590][ T26] ? lockdep_hardirqs_on+0x79/0x100 [ 716.167840][ T26] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.174160][ T26] ? __kthread_parkme+0x15f/0x220 [ 716.179237][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.184607][ T26] kthread+0x3e5/0x4d0 [ 716.188682][ T26] ? set_kthread_struct+0x130/0x130 [ 716.193920][ T26] ret_from_fork+0x1f/0x30 [ 716.198405][ T26] INFO: task syz-executor747:6595 blocked for more than 143 seconds. [ 716.206504][ T26] Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.213648][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.222325][ T26] task:syz-executor747 state:D stack:28184 pid: 6595 ppid: 6563 flags:0x00004006 [ 716.231530][ T26] Call Trace: [ 716.234856][ T26] __schedule+0x93a/0x26f0 [ 716.239264][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.244568][ T26] ? trace_hardirqs_on+0x5b/0x1c0 [ 716.249694][ T26] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 716.255528][ T26] schedule+0xd3/0x270 [ 716.259637][ T26] __lock_sock+0x13d/0x260 [ 716.264118][ T26] ? sock_omalloc+0x180/0x180 [ 716.268792][ T26] ? __rfcomm_dlc_close+0x162/0x8a0 [ 716.274062][ T26] ? finish_wait+0x270/0x270 [ 716.278646][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.283606][ T26] lock_sock_nested+0xf6/0x120 [ 716.288368][ T26] rfcomm_sk_state_change+0xb4/0x390 [ 716.293692][ T26] __rfcomm_dlc_close+0x1b6/0x8a0 [ 716.298720][ T26] rfcomm_dlc_close+0x1ea/0x240 [ 716.303681][ T26] __rfcomm_sock_close+0xac/0x260 [ 716.308708][ T26] rfcomm_sock_shutdown+0xe9/0x210 [ 716.313979][ T26] rfcomm_sock_release+0x5f/0x140 [ 716.319006][ T26] __sock_release+0xcd/0x280 [ 716.323697][ T26] sock_close+0x18/0x20 [ 716.327859][ T26] __fput+0x288/0x920 [ 716.335177][ T26] ? __sock_release+0x280/0x280 [ 716.340034][ T26] task_work_run+0xdd/0x1a0 [ 716.344562][ T26] do_exit+0xbd4/0x2a60 [ 716.348766][ T26] ? lock_acquire+0x442/0x510 [ 716.353487][ T26] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.359018][ T26] ? lock_release+0x522/0x720 [ 716.363857][ T26] ? mm_update_next_owner+0x7a0/0x7a0 [ 716.369230][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.374111][ T26] ? do_raw_spin_lock+0x120/0x2b0 [ 716.379142][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.384106][ T26] do_group_exit+0x125/0x310 [ 716.388697][ T26] get_signal+0x47f/0x2160 [ 716.393249][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.398095][ T26] ? wake_up_q+0xf0/0xf0 [ 716.402424][ T26] arch_do_signal_or_restart+0x2a9/0x1c40 [ 716.408193][ T26] ? rfcomm_sock_connect+0x15f/0x460 [ 716.413517][ T26] ? rfcomm_sock_getname+0x300/0x300 [ 716.418800][ T26] ? __sys_connect_file+0x4e/0x1a0 [ 716.423939][ T26] ? get_sigframe_size+0x10/0x10 [ 716.428874][ T26] ? __sys_connect_file+0x1a0/0x1a0 [ 716.434112][ T26] exit_to_user_mode_prepare+0x17d/0x290 [ 716.439807][ T26] syscall_exit_to_user_mode+0x19/0x60 [ 716.445287][ T26] do_syscall_64+0x42/0xb0 [ 716.449702][ T26] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.455637][ T26] RIP: 0033:0x445fe9 [ 716.459528][ T26] RSP: 002b:00007ffd2330fdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 716.468064][ T26] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 716.476082][ T26] RDX: 0000000000000080 RSI: 00000000200001c0 RDI: 0000000000000004 [ 716.484082][ T26] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 716.492087][ T26] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001eaa2b8 [ 716.500060][ T26] R13: 0000000000000072 R14: 00007ffd2330fe10 R15: 0000000000000003 [ 716.508064][ T26] INFO: lockdep is turned off. [ 716.512866][ T26] NMI backtrace for cpu 1 [ 716.517172][ T26] CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.526518][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.536548][ T26] Call Trace: [ 716.539807][ T26] dump_stack_lvl+0xcd/0x134 [ 716.544453][ T26] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.549731][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.554949][ T26] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 716.560961][ T26] watchdog+0xcb7/0xed0 [ 716.565099][ T26] ? trace_sched_process_hang+0x280/0x280 [ 716.570845][ T26] kthread+0x3e5/0x4d0 [ 716.574910][ T26] ? set_kthread_struct+0x130/0x130 [ 716.580094][ T26] ret_from_fork+0x1f/0x30 [ 716.584619][ T26] Sending NMI from CPU 1 to CPUs 0: [ 716.589832][ C0] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 [ 716.599615][ T26] Kernel panic - not syncing: hung_task: blocked tasks [ 716.599627][ T26] CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.599649][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.599659][ T26] Call Trace: [ 716.599669][ T26] dump_stack_lvl+0xcd/0x134 [ 716.599698][ T26] panic+0x2b0/0x6dd [ 716.599763][ T26] ? __warn_printk+0xf3/0xf3 [ 716.599790][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.599819][ T26] ? preempt_schedule_thunk+0x16/0x18 [ 716.599844][ T26] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 716.599873][ T26] ? watchdog.cold+0x1b9/0x1de [ 716.599910][ T26] watchdog.cold+0x1ca/0x1de [ 716.599933][ T26] ? trace_sched_process_hang+0x280/0x280 [ 716.599960][ T26] kthread+0x3e5/0x4d0 [ 716.599984][ T26] ? set_kthread_struct+0x130/0x130 [ 716.600011][ T26] ret_from_fork+0x1f/0x30 [ 716.601300][ T26] Kernel Offset: disabled [ 716.693173][ T26] Rebooting in 86400 seconds..