[ 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 '10.128.0.146' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 488.434318][ T2947] Bluetooth: hci0: command 0x0409 tx timeout [ 490.514107][ T2947] Bluetooth: hci0: command 0x041b tx timeout [ 492.593922][ T6590] Bluetooth: hci0: command 0x040f tx timeout [ 494.673648][ T6590] Bluetooth: hci0: command 0x0419 tx timeout [ 496.753438][ T6590] Bluetooth: hci0: command 0x0405 tx timeout [ 610.663818][ T6590] Bluetooth: hci0: command 0x0406 tx timeout [ 716.097658][ T26] INFO: task krfcommd:2891 blocked for more than 143 seconds. [ 716.105165][ T26] Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.113552][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.122559][ T26] task:krfcommd state:D stack:29640 pid: 2891 ppid: 2 flags:0x00004000 [ 716.132048][ T26] Call Trace: [ 716.135327][ T26] __schedule+0x93a/0x26f0 [ 716.140099][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.145399][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.150627][ T26] schedule+0xd3/0x270 [ 716.154706][ T26] schedule_preempt_disabled+0xf/0x20 [ 716.160341][ T26] __mutex_lock+0xa46/0x1300 [ 716.164949][ T26] ? rfcomm_run+0x2ed/0x4a20 [ 716.169995][ T26] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.175557][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.180764][ T26] rfcomm_run+0x2ed/0x4a20 [ 716.185197][ T26] ? find_held_lock+0x2d/0x110 [ 716.190195][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.195487][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.200568][ T26] ? __init_waitqueue_head+0xd0/0xd0 [ 716.205895][ T26] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 716.211996][ T26] ? lockdep_hardirqs_on+0x79/0x100 [ 716.217202][ T26] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.223801][ T26] ? __kthread_parkme+0x15f/0x220 [ 716.229191][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.234486][ T26] kthread+0x3e5/0x4d0 [ 716.238796][ T26] ? set_kthread_struct+0x130/0x130 [ 716.244002][ T26] ret_from_fork+0x1f/0x30 [ 716.248740][ T26] INFO: task syz-executor251:6588 blocked for more than 143 seconds. [ 716.256802][ T26] Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.264196][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.272960][ T26] task:syz-executor251 state:D stack:27704 pid: 6588 ppid: 6556 flags:0x00004006 [ 716.282254][ T26] Call Trace: [ 716.285534][ T26] __schedule+0x93a/0x26f0 [ 716.290198][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.295498][ T26] ? trace_hardirqs_on+0x5b/0x1c0 [ 716.300828][ T26] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 716.306645][ T26] schedule+0xd3/0x270 [ 716.310947][ T26] __lock_sock+0x13d/0x260 [ 716.315433][ T26] ? sock_omalloc+0x180/0x180 [ 716.320389][ T26] ? __rfcomm_dlc_close+0x162/0x8a0 [ 716.325652][ T26] ? finish_wait+0x270/0x270 [ 716.330486][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.335443][ T26] lock_sock_nested+0xf6/0x120 [ 716.340452][ T26] rfcomm_sk_state_change+0xb4/0x390 [ 716.345792][ T26] __rfcomm_dlc_close+0x1b6/0x8a0 [ 716.351219][ T26] rfcomm_dlc_close+0x1ea/0x240 [ 716.356087][ T26] __rfcomm_sock_close+0xac/0x260 [ 716.361443][ T26] rfcomm_sock_shutdown+0xe9/0x210 [ 716.366559][ T26] rfcomm_sock_release+0x5f/0x140 [ 716.371802][ T26] __sock_release+0xcd/0x280 [ 716.376462][ T26] sock_close+0x18/0x20 [ 716.380863][ T26] __fput+0x288/0x9f0 [ 716.384929][ T26] ? __sock_release+0x280/0x280 [ 716.390022][ T26] task_work_run+0xdd/0x1a0 [ 716.394536][ T26] do_exit+0xbae/0x2a30 [ 716.398986][ T26] ? lock_acquire+0x442/0x510 [ 716.403669][ T26] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.409477][ T26] ? lock_release+0x522/0x720 [ 716.414169][ T26] ? mm_update_next_owner+0x7a0/0x7a0 [ 716.419877][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.424738][ T26] ? do_raw_spin_lock+0x120/0x2b0 [ 716.430055][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.435005][ T26] do_group_exit+0x125/0x310 [ 716.439865][ T26] get_signal+0x47f/0x2160 [ 716.444349][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.449450][ T26] ? wake_up_q+0xf0/0xf0 [ 716.453756][ T26] arch_do_signal_or_restart+0x2a9/0x1c40 [ 716.459770][ T26] ? rfcomm_sock_connect+0x15f/0x460 [ 716.465063][ T26] ? rfcomm_sock_getname+0x300/0x300 [ 716.470674][ T26] ? __sys_connect_file+0x4e/0x1a0 [ 716.475807][ T26] ? get_sigframe_size+0x10/0x10 [ 716.481084][ T26] ? __sys_connect_file+0x1a0/0x1a0 [ 716.486298][ T26] exit_to_user_mode_prepare+0x17d/0x290 [ 716.492350][ T26] syscall_exit_to_user_mode+0x19/0x60 [ 716.497881][ T26] do_syscall_64+0x42/0xb0 [ 716.502341][ T26] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.508525][ T26] RIP: 0033:0x445fe9 [ 716.512425][ T26] RSP: 002b:00007fff20337368 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 716.521111][ T26] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 716.529149][ T26] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 716.537124][ T26] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 716.545333][ T26] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000010982b8 [ 716.553372][ T26] R13: 0000000000000072 R14: 00007fff203373c0 R15: 0000000000000003 [ 716.561430][ T26] INFO: lockdep is turned off. [ 716.566181][ T26] NMI backtrace for cpu 1 [ 716.570483][ T26] CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.579830][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.589863][ T26] Call Trace: [ 716.593132][ T26] dump_stack_lvl+0xcd/0x134 [ 716.597749][ T26] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.603028][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.608273][ T26] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 716.614285][ T26] watchdog+0xcb7/0xed0 [ 716.618439][ T26] ? trace_sched_process_hang+0x280/0x280 [ 716.624165][ T26] kthread+0x3e5/0x4d0 [ 716.628231][ T26] ? set_kthread_struct+0x130/0x130 [ 716.633427][ T26] ret_from_fork+0x1f/0x30 [ 716.637910][ T26] Sending NMI from CPU 1 to CPUs 0: [ 716.643114][ C0] NMI backtrace for cpu 0 [ 716.643125][ C0] CPU: 0 PID: 1198 Comm: kworker/u4:5 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.643149][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.643163][ C0] Workqueue: events_unbound toggle_allocation_gate [ 716.643299][ C0] RIP: 0010:load_new_mm_cr3+0x32/0x130 [ 716.643398][ C0] Code: f3 74 2a e9 85 00 00 00 48 89 ef e8 78 f5 ff ff 66 81 fb fe 0f 48 89 c6 0f 87 df 00 00 00 83 c3 01 0f b7 c3 48 09 f0 0f 22 d8 <5b> 5d c3 66 81 fe fe 0f 77 68 be 08 00 00 00 48 c7 c7 50 ea 6d 8d [ 716.643424][ C0] RSP: 0018:ffffc90005257998 EFLAGS: 00000093 [ 716.643440][ C0] RAX: 000000000b68e000 RBX: 0000000000000000 RCX: 0000000000000000 [ 716.643454][ C0] RDX: ffff88801cdc8000 RSI: ffffffff81346ed4 RDI: 0000000000000003 [ 716.643469][ C0] RBP: ffffffff8b68e000 R08: 000000001fffffff R09: ffffffff8baa7158 [ 716.643484][ C0] R10: ffffffff81346f19 R11: 000000000000003f R12: ffff888010e68000 [ 716.643498][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 716.643511][ C0] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 716.643533][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.643549][ C0] CR2: 00007efff5bf6000 CR3: 000000000b68e000 CR4: 00000000001506f0 [ 716.643563][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.643576][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.643590][ C0] Call Trace: [ 716.643596][ C0] switch_mm_irqs_off+0x496/0xa10 [ 716.643623][ C0] ? kasan_check_range+0x13d/0x180 [ 716.643646][ C0] ? __kmalloc_track_caller+0xca/0x310 [ 716.643694][ C0] __text_poke+0x541/0x8c0 [ 716.643737][ C0] ? text_poke_loc_init+0x340/0x340 [ 716.643762][ C0] ? __text_poke+0x8c0/0x8c0 [ 716.643785][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.643813][ C0] text_poke_bp_batch+0x2eb/0x560 [ 716.643839][ C0] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.643869][ C0] ? alternatives_enable_smp+0xf0/0xf0 [ 716.643895][ C0] ? __jump_label_patch+0xdf/0x1b0 [ 716.643918][ C0] ? lock_release+0x522/0x720 [ 716.643940][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 716.643963][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.643988][ C0] ? __jump_label_update+0x351/0x400 [ 716.644034][ C0] text_poke_finish+0x16/0x30 [ 716.644058][ C0] arch_jump_label_transform_apply+0x13/0x20 [ 716.644083][ C0] jump_label_update+0x1d5/0x430 [ 716.644107][ C0] static_key_disable_cpuslocked+0x152/0x1b0 [ 716.644133][ C0] static_key_disable+0x16/0x20 [ 716.644169][ C0] toggle_allocation_gate+0x185/0x390 [ 716.644193][ C0] ? lock_release+0x720/0x720 [ 716.644214][ C0] ? wake_up_kfence_timer+0x20/0x20 [ 716.644240][ C0] ? finish_wait+0x270/0x270 [ 716.644260][ C0] ? read_word_at_a_time+0xe/0x20 [ 716.644282][ C0] ? strscpy+0xa1/0x2b0 [ 716.644302][ C0] process_one_work+0x98d/0x1630 [ 716.644334][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.644365][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 716.644392][ C0] worker_thread+0x658/0x11f0 [ 716.644424][ C0] ? process_one_work+0x1630/0x1630 [ 716.644452][ C0] kthread+0x3e5/0x4d0 [ 716.644475][ C0] ? set_kthread_struct+0x130/0x130 [ 716.644502][ C0] ret_from_fork+0x1f/0x30 [ 716.644534][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.419 msecs [ 716.645298][ T26] Kernel panic - not syncing: hung_task: blocked tasks [ 716.976669][ T26] CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.986032][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.996072][ T26] Call Trace: [ 716.999342][ T26] dump_stack_lvl+0xcd/0x134 [ 717.003927][ T26] panic+0x2b0/0x6dd [ 717.007845][ T26] ? __warn_printk+0xf3/0xf3 [ 717.012434][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.017640][ T26] ? preempt_schedule_thunk+0x16/0x18 [ 717.023010][ T26] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 717.029162][ T26] ? watchdog.cold+0x1b9/0x1de [ 717.033935][ T26] watchdog.cold+0x1ca/0x1de [ 717.038520][ T26] ? trace_sched_process_hang+0x280/0x280 [ 717.044264][ T26] kthread+0x3e5/0x4d0 [ 717.048330][ T26] ? set_kthread_struct+0x130/0x130 [ 717.053524][ T26] ret_from_fork+0x1f/0x30 [ 717.059125][ T26] Kernel Offset: disabled [ 717.063436][ T26] Rebooting in 86400 seconds..