[ 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 '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.149783][ T6827] IPVS: ftp: loaded support on port[0] = 21 [ 42.206927][ T1545] ================================================================== [ 42.215130][ T1545] BUG: KASAN: null-ptr-deref in amp_read_loc_assoc_final_data+0x115/0x260 [ 42.223631][ T1545] Write of size 8 at addr 0000000000000030 by task kworker/u5:0/1545 [ 42.231693][ T1545] [ 42.234029][ T1545] CPU: 1 PID: 1545 Comm: kworker/u5:0 Not tainted 5.9.0-rc1-syzkaller #0 [ 42.242861][ T1545] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.252909][ T1545] Workqueue: hci0 hci_rx_work [ 42.257566][ T1545] Call Trace: [ 42.260839][ T1545] dump_stack+0x1f0/0x31e [ 42.265152][ T1545] kasan_report+0x151/0x1d0 [ 42.269639][ T1545] ? amp_read_loc_assoc_final_data+0x115/0x260 [ 42.275776][ T1545] check_memory_region+0x2b5/0x2f0 [ 42.280873][ T1545] amp_read_loc_assoc_final_data+0x115/0x260 [ 42.286837][ T1545] ? rcu_lock_release+0x5/0x20 [ 42.291583][ T1545] hci_event_packet+0x824e/0x17e10 [ 42.296772][ T1545] ? trace_lock_release+0x137/0x1a0 [ 42.301960][ T1545] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 42.307754][ T1545] ? lockdep_hardirqs_on+0x49/0xf0 [ 42.312855][ T1545] hci_rx_work+0x246/0xa20 [ 42.317297][ T1545] process_one_work+0x789/0xfc0 [ 42.322142][ T1545] worker_thread+0xaa4/0x1460 [ 42.326818][ T1545] kthread+0x37e/0x3a0 [ 42.330918][ T1545] ? rcu_lock_release+0x20/0x20 [ 42.335753][ T1545] ? kthread_blkcg+0xd0/0xd0 [ 42.340331][ T1545] ret_from_fork+0x1f/0x30 [ 42.344734][ T1545] ================================================================== [ 42.352774][ T1545] Disabling lock debugging due to kernel taint [ 42.359272][ T1545] Kernel panic - not syncing: panic_on_warn set ... [ 42.365860][ T1545] CPU: 1 PID: 1545 Comm: kworker/u5:0 Tainted: G B 5.9.0-rc1-syzkaller #0 [ 42.375955][ T1545] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.385998][ T1545] Workqueue: hci0 hci_rx_work [ 42.390648][ T1545] Call Trace: [ 42.393917][ T1545] dump_stack+0x1f0/0x31e [ 42.398256][ T1545] panic+0x264/0x7a0 [ 42.402128][ T1545] ? trace_hardirqs_on+0x30/0x80 [ 42.407044][ T1545] ? _raw_spin_unlock_irqrestore+0xa5/0xd0 [ 42.412827][ T1545] kasan_report+0x1c9/0x1d0 [ 42.417384][ T1545] ? amp_read_loc_assoc_final_data+0x115/0x260 [ 42.423517][ T1545] check_memory_region+0x2b5/0x2f0 [ 42.428604][ T1545] amp_read_loc_assoc_final_data+0x115/0x260 [ 42.434562][ T1545] ? rcu_lock_release+0x5/0x20 [ 42.439300][ T1545] hci_event_packet+0x824e/0x17e10 [ 42.444393][ T1545] ? trace_lock_release+0x137/0x1a0 [ 42.449570][ T1545] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 42.455497][ T1545] ? lockdep_hardirqs_on+0x49/0xf0 [ 42.460617][ T1545] hci_rx_work+0x246/0xa20 [ 42.465018][ T1545] process_one_work+0x789/0xfc0 [ 42.469850][ T1545] worker_thread+0xaa4/0x1460 [ 42.474509][ T1545] kthread+0x37e/0x3a0 [ 42.479596][ T1545] ? rcu_lock_release+0x20/0x20 [ 42.484424][ T1545] ? kthread_blkcg+0xd0/0xd0 [ 42.488989][ T1545] ret_from_fork+0x1f/0x30 [ 42.494688][ T1545] Kernel Offset: disabled [ 42.499005][ T1545] Rebooting in 86400 seconds..