[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. syzkaller login: [ 74.311477][ T29] audit: type=1400 audit(1596254048.508:8): avc: denied { execmem } for pid=6846 comm="syz-executor199" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.328212][ T6847] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.429652][ T6872] ================================================================== [ 75.438414][ T6872] BUG: KASAN: null-ptr-deref in amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.446916][ T6872] Write of size 8 at addr 0000000000000030 by task kworker/u5:1/6872 [ 75.454974][ T6872] [ 75.457315][ T6872] CPU: 0 PID: 6872 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 75.465722][ T6872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.475781][ T6872] Workqueue: hci0 hci_rx_work [ 75.480446][ T6872] Call Trace: [ 75.483738][ T6872] dump_stack+0x18f/0x20d [ 75.488071][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.494219][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.500373][ T6872] kasan_report.cold+0x5/0x37 [ 75.505063][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.511235][ T6872] check_memory_region+0x13d/0x180 [ 75.516347][ T6872] amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.522325][ T6872] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 75.527520][ T6872] ? find_held_lock+0x2d/0x110 [ 75.532280][ T6872] ? hci_event_packet+0x4123/0x86f5 [ 75.537479][ T6872] ? lock_downgrade+0x820/0x820 [ 75.542338][ T6872] hci_event_packet+0x415e/0x86f5 [ 75.547365][ T6872] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 75.553343][ T6872] ? __lock_acquire+0x16e3/0x56e0 [ 75.558371][ T6872] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 75.563938][ T6872] ? lock_acquire+0x1f1/0xad0 [ 75.568610][ T6872] ? skb_dequeue+0x1c/0x180 [ 75.573109][ T6872] ? find_held_lock+0x2d/0x110 [ 75.577874][ T6872] ? mark_lock+0xbc/0x1710 [ 75.582291][ T6872] ? mark_held_locks+0x9f/0xe0 [ 75.587053][ T6872] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 75.592851][ T6872] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 75.598844][ T6872] ? trace_hardirqs_on+0x5f/0x220 [ 75.603865][ T6872] ? lockdep_hardirqs_on+0x6a/0xe0 [ 75.608973][ T6872] hci_rx_work+0x22e/0xb10 [ 75.613394][ T6872] process_one_work+0x94c/0x1670 [ 75.618367][ T6872] ? lock_release+0x8d0/0x8d0 [ 75.623037][ T6872] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 75.628407][ T6872] ? rwlock_bug.part.0+0x90/0x90 [ 75.633344][ T6872] ? lockdep_hardirqs_off+0x66/0xa0 [ 75.639766][ T6872] worker_thread+0x64c/0x1120 [ 75.644450][ T6872] ? process_one_work+0x1670/0x1670 [ 75.649645][ T6872] kthread+0x3b5/0x4a0 [ 75.653705][ T6872] ? __kthread_bind_mask+0xc0/0xc0 [ 75.658809][ T6872] ? __kthread_bind_mask+0xc0/0xc0 [ 75.663924][ T6872] ret_from_fork+0x1f/0x30 [ 75.668338][ T6872] ================================================================== [ 75.676392][ T6872] Disabling lock debugging due to kernel taint [ 75.693195][ T6872] Kernel panic - not syncing: panic_on_warn set ... [ 75.699808][ T6872] CPU: 0 PID: 6872 Comm: kworker/u5:1 Tainted: G B 5.8.0-rc7-syzkaller #0 [ 75.709627][ T6872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.719688][ T6872] Workqueue: hci0 hci_rx_work [ 75.724357][ T6872] Call Trace: [ 75.727647][ T6872] dump_stack+0x18f/0x20d [ 75.731994][ T6872] ? amp_read_loc_assoc_final_data+0xd0/0x1f0 [ 75.738062][ T6872] panic+0x2e3/0x75c [ 75.742482][ T6872] ? __warn_printk+0xf3/0xf3 [ 75.747077][ T6872] ? preempt_schedule_common+0x59/0xc0 [ 75.752535][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.758690][ T6872] ? preempt_schedule_thunk+0x16/0x18 [ 75.764068][ T6872] ? trace_hardirqs_on+0x55/0x220 [ 75.769097][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.775251][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.781404][ T6872] end_report+0x4d/0x53 [ 75.785559][ T6872] kasan_report.cold+0xd/0x37 [ 75.790239][ T6872] ? amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.796392][ T6872] check_memory_region+0x13d/0x180 [ 75.801503][ T6872] amp_read_loc_assoc_final_data+0x120/0x1f0 [ 75.807517][ T6872] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 75.812746][ T6872] ? find_held_lock+0x2d/0x110 [ 75.817520][ T6872] ? hci_event_packet+0x4123/0x86f5 [ 75.823683][ T6872] ? lock_downgrade+0x820/0x820 [ 75.828535][ T6872] hci_event_packet+0x415e/0x86f5 [ 75.833547][ T6872] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 75.839512][ T6872] ? __lock_acquire+0x16e3/0x56e0 [ 75.844516][ T6872] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 75.850049][ T6872] ? lock_acquire+0x1f1/0xad0 [ 75.854707][ T6872] ? skb_dequeue+0x1c/0x180 [ 75.859195][ T6872] ? find_held_lock+0x2d/0x110 [ 75.863949][ T6872] ? mark_lock+0xbc/0x1710 [ 75.868358][ T6872] ? mark_held_locks+0x9f/0xe0 [ 75.873113][ T6872] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 75.879200][ T6872] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 75.885172][ T6872] ? trace_hardirqs_on+0x5f/0x220 [ 75.890177][ T6872] ? lockdep_hardirqs_on+0x6a/0xe0 [ 75.895358][ T6872] hci_rx_work+0x22e/0xb10 [ 75.899769][ T6872] process_one_work+0x94c/0x1670 [ 75.904686][ T6872] ? lock_release+0x8d0/0x8d0 [ 75.909359][ T6872] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 75.914711][ T6872] ? rwlock_bug.part.0+0x90/0x90 [ 75.919636][ T6872] ? lockdep_hardirqs_off+0x66/0xa0 [ 75.924867][ T6872] worker_thread+0x64c/0x1120 [ 75.929525][ T6872] ? process_one_work+0x1670/0x1670 [ 75.935268][ T6872] kthread+0x3b5/0x4a0 [ 75.939326][ T6872] ? __kthread_bind_mask+0xc0/0xc0 [ 75.944415][ T6872] ? __kthread_bind_mask+0xc0/0xc0 [ 75.949512][ T6872] ret_from_fork+0x1f/0x30 [ 75.954931][ T6872] Kernel Offset: disabled [ 75.959254][ T6872] Rebooting in 86400 seconds..