[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 483.201932][ T3039] Bluetooth: hci0: command 0x0409 tx timeout [ 485.281667][ T3039] Bluetooth: hci0: command 0x041b tx timeout [ 487.361568][ T6598] Bluetooth: hci0: command 0x040f tx timeout [ 489.441282][ T6598] Bluetooth: hci0: command 0x0419 tx timeout [ 491.521062][ T6598] Bluetooth: hci0: command 0x0405 tx timeout [ 605.511673][ T6598] Bluetooth: hci0: command 0x0406 tx timeout [ 716.065466][ T27] INFO: task krfcommd:2894 blocked for more than 143 seconds. [ 716.073159][ T27] Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.081102][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.089880][ T27] task:krfcommd state:D stack:29128 pid: 2894 ppid: 2 flags:0x00004000 [ 716.099317][ T27] Call Trace: [ 716.102605][ T27] __schedule+0x93a/0x26f0 [ 716.107486][ T27] ? io_schedule_timeout+0x140/0x140 [ 716.112787][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.118093][ T27] schedule+0xd3/0x270 [ 716.122175][ T27] schedule_preempt_disabled+0xf/0x20 [ 716.127865][ T27] __mutex_lock+0xa46/0x1300 [ 716.132475][ T27] ? rfcomm_run+0x2ed/0x4a20 [ 716.137500][ T27] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.143053][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.148440][ T27] rfcomm_run+0x2ed/0x4a20 [ 716.152887][ T27] ? find_held_lock+0x2d/0x110 [ 716.157982][ T27] ? rfcomm_check_accept+0x240/0x240 [ 716.163332][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.168447][ T27] ? __init_waitqueue_head+0xd0/0xd0 [ 716.173811][ T27] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 716.180105][ T27] ? lockdep_hardirqs_on+0x79/0x100 [ 716.185600][ T27] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.192058][ T27] ? __kthread_parkme+0x15f/0x220 [ 716.197439][ T27] ? rfcomm_check_accept+0x240/0x240 [ 716.202745][ T27] kthread+0x3e5/0x4d0 [ 716.207162][ T27] ? set_kthread_struct+0x130/0x130 [ 716.212371][ T27] ret_from_fork+0x1f/0x30 [ 716.217209][ T27] INFO: task syz-executor732:6596 blocked for more than 143 seconds. [ 716.225325][ T27] Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.232520][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.241227][ T27] task:syz-executor732 state:D stack:28184 pid: 6596 ppid: 6564 flags:0x00004006 [ 716.250470][ T27] Call Trace: [ 716.253746][ T27] __schedule+0x93a/0x26f0 [ 716.258209][ T27] ? io_schedule_timeout+0x140/0x140 [ 716.263507][ T27] ? trace_hardirqs_on+0x5b/0x1c0 [ 716.268618][ T27] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 716.274535][ T27] schedule+0xd3/0x270 [ 716.278753][ T27] __lock_sock+0x13d/0x260 [ 716.283247][ T27] ? sock_omalloc+0x180/0x180 [ 716.287964][ T27] ? __rfcomm_dlc_close+0x162/0x8a0 [ 716.293169][ T27] ? finish_wait+0x270/0x270 [ 716.297787][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.302732][ T27] lock_sock_nested+0xf6/0x120 [ 716.307530][ T27] rfcomm_sk_state_change+0xb4/0x390 [ 716.312812][ T27] __rfcomm_dlc_close+0x1b6/0x8a0 [ 716.317874][ T27] rfcomm_dlc_close+0x1ea/0x240 [ 716.322766][ T27] __rfcomm_sock_close+0xac/0x260 [ 716.327826][ T27] rfcomm_sock_shutdown+0xe9/0x210 [ 716.332942][ T27] rfcomm_sock_release+0x5f/0x140 [ 716.338016][ T27] __sock_release+0xcd/0x280 [ 716.342677][ T27] sock_close+0x18/0x20 [ 716.346866][ T27] __fput+0x288/0x920 [ 716.350911][ T27] ? __sock_release+0x280/0x280 [ 716.355781][ T27] task_work_run+0xdd/0x1a0 [ 716.360285][ T27] do_exit+0xbd4/0x2a60 [ 716.364494][ T27] ? lock_acquire+0x442/0x510 [ 716.369194][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.374716][ T27] ? lock_release+0x522/0x720 [ 716.379508][ T27] ? mm_update_next_owner+0x7a0/0x7a0 [ 716.385051][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.389929][ T27] ? do_raw_spin_lock+0x120/0x2b0 [ 716.394954][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.399972][ T27] do_group_exit+0x125/0x310 [ 716.404589][ T27] get_signal+0x47f/0x2160 [ 716.409091][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.413944][ T27] ? wake_up_q+0xf0/0xf0 [ 716.418273][ T27] arch_do_signal_or_restart+0x2a9/0x1c40 [ 716.424055][ T27] ? rfcomm_sock_connect+0x15f/0x460 [ 716.429366][ T27] ? rfcomm_sock_getname+0x300/0x300 [ 716.434653][ T27] ? __sys_connect_file+0x4e/0x1a0 [ 716.439891][ T27] ? get_sigframe_size+0x10/0x10 [ 716.444831][ T27] ? __sys_connect_file+0x1a0/0x1a0 [ 716.450082][ T27] exit_to_user_mode_prepare+0x17d/0x290 [ 716.455902][ T27] syscall_exit_to_user_mode+0x19/0x60 [ 716.461365][ T27] do_syscall_64+0x42/0xb0 [ 716.465891][ T27] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.471790][ T27] RIP: 0033:0x445fe9 [ 716.475703][ T27] RSP: 002b:00007ffd57efb998 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 716.484201][ T27] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 716.492196][ T27] RDX: 0000000000000080 RSI: 00000000200001c0 RDI: 0000000000000004 [ 716.500201][ T27] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 716.508194][ T27] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000015eb2b8 [ 716.516204][ T27] R13: 0000000000000072 R14: 00007ffd57efb9f0 R15: 0000000000000003 [ 716.524194][ T27] INFO: lockdep is turned off. [ 716.528979][ T27] NMI backtrace for cpu 0 [ 716.533291][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.542638][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.552690][ T27] Call Trace: [ 716.555955][ T27] dump_stack_lvl+0xcd/0x134 [ 716.560609][ T27] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.565884][ T27] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.571145][ T27] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 716.577182][ T27] watchdog+0xcb7/0xed0 [ 716.581340][ T27] ? trace_sched_process_hang+0x280/0x280 [ 716.587055][ T27] kthread+0x3e5/0x4d0 [ 716.591117][ T27] ? set_kthread_struct+0x130/0x130 [ 716.596310][ T27] ret_from_fork+0x1f/0x30 [ 716.601321][ T27] Sending NMI from CPU 0 to CPUs 1: [ 716.606539][ C1] NMI backtrace for cpu 1 [ 716.606548][ C1] CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.606570][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.606582][ C1] Workqueue: events_unbound toggle_allocation_gate [ 716.606686][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x60 [ 716.606711][ C1] Code: ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 a9 49 8c 7e 89 c1 <48> 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 a9 00 01 [ 716.606730][ C1] RSP: 0018:ffffc90000cd7a00 EFLAGS: 00000246 [ 716.606746][ C1] RAX: 0000000080000000 RBX: ffffc90000cd7a68 RCX: 0000000080000000 [ 716.606759][ C1] RDX: 0000000000000000 RSI: ffff888011aed580 RDI: 0000000000000003 [ 716.606771][ C1] RBP: 0000000000000002 R08: 0000000000000002 R09: ffffc90000cd7aaf [ 716.606783][ C1] R10: ffffffff83f4ac62 R11: 0000000000000000 R12: ffffffff81bae2c9 [ 716.606796][ C1] R13: 000000000000000f R14: 0000000000000000 R15: 0000000000000000 [ 716.606808][ C1] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 716.606826][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.606839][ C1] CR2: 00007f59127a6010 CR3: 000000000b68e000 CR4: 00000000001506e0 [ 716.606852][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.606863][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.606875][ C1] Call Trace: [ 716.606880][ C1] insn_decode+0x2a5/0x4e0 [ 716.606906][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.606930][ C1] arch_jump_entry_size+0xa0/0x110 [ 716.606981][ C1] ? arch_jump_entry_size.part.0+0x10/0x10 [ 716.607002][ C1] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.607033][ C1] ? static_key_disable_cpuslocked+0x108/0x1b0 [ 716.607088][ C1] ? kmem_cache_alloc_bulk+0x3eb/0x710 [ 716.607111][ C1] __jump_label_patch+0x7c/0x1b0 [ 716.607132][ C1] arch_jump_label_transform_queue+0x63/0x100 [ 716.607154][ C1] ? lock_release+0x522/0x720 [ 716.607173][ C1] __jump_label_update+0x12e/0x400 [ 716.607196][ C1] jump_label_update+0x1d5/0x430 [ 716.607218][ C1] static_key_disable_cpuslocked+0x152/0x1b0 [ 716.607239][ C1] static_key_disable+0x16/0x20 [ 716.607259][ C1] toggle_allocation_gate+0x185/0x390 [ 716.607280][ C1] ? lock_release+0x720/0x720 [ 716.607298][ C1] ? wake_up_kfence_timer+0x20/0x20 [ 716.607322][ C1] ? read_word_at_a_time+0xe/0x20 [ 716.607350][ C1] ? strscpy+0xa1/0x2b0 [ 716.607374][ C1] process_one_work+0x98d/0x1630 [ 716.607403][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.607430][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 716.607454][ C1] worker_thread+0x658/0x11f0 [ 716.607482][ C1] ? process_one_work+0x1630/0x1630 [ 716.607506][ C1] kthread+0x3e5/0x4d0 [ 716.607527][ C1] ? set_kthread_struct+0x130/0x130 [ 716.607550][ C1] ret_from_fork+0x1f/0x30 [ 716.607578][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.040 msecs [ 716.608577][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 716.906448][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 [ 716.915805][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.925847][ T27] Call Trace: [ 716.929116][ T27] dump_stack_lvl+0xcd/0x134 [ 716.933731][ T27] panic+0x2b0/0x6dd [ 716.937677][ T27] ? __warn_printk+0xf3/0xf3 [ 716.942266][ T27] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.947462][ T27] ? preempt_schedule_thunk+0x16/0x18 [ 716.952825][ T27] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 716.958972][ T27] ? watchdog.cold+0x1b9/0x1de [ 716.963869][ T27] watchdog.cold+0x1ca/0x1de [ 716.968469][ T27] ? trace_sched_process_hang+0x280/0x280 [ 716.974210][ T27] kthread+0x3e5/0x4d0 [ 716.978368][ T27] ? set_kthread_struct+0x130/0x130 [ 716.983564][ T27] ret_from_fork+0x1f/0x30 [ 716.989343][ T27] Kernel Offset: disabled [ 716.993654][ T27] Rebooting in 86400 seconds..