[ 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 '10.128.0.151' (ECDSA) to the list of known hosts. syzkaller login: [ 41.337651][ T6814] IPVS: ftp: loaded support on port[0] = 21 [ 42.443355][ T6840] ================================================================== [ 42.451529][ T6840] BUG: KASAN: null-ptr-deref in amp_read_loc_assoc_final_data+0x115/0x260 [ 42.460018][ T6840] Write of size 8 at addr 0000000000000030 by task kworker/u5:1/6840 [ 42.468062][ T6840] [ 42.470377][ T6840] CPU: 1 PID: 6840 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 42.478849][ T6840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.488923][ T6840] Workqueue: hci0 hci_rx_work [ 42.493591][ T6840] Call Trace: [ 42.496873][ T6840] dump_stack+0x1f0/0x31e [ 42.501204][ T6840] kasan_report+0x151/0x1d0 [ 42.505704][ T6840] ? amp_read_loc_assoc_final_data+0x115/0x260 [ 42.511846][ T6840] check_memory_region+0x2b5/0x2f0 [ 42.516930][ T6840] amp_read_loc_assoc_final_data+0x115/0x260 [ 42.522880][ T6840] ? rcu_lock_release+0x5/0x20 [ 42.527627][ T6840] hci_event_packet+0x82b2/0x18260 [ 42.532765][ T6840] ? trace_lock_release+0x137/0x1a0 [ 42.537939][ T6840] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 42.543715][ T6840] ? lockdep_hardirqs_on+0x38/0xe0 [ 42.548890][ T6840] hci_rx_work+0x236/0x9c0 [ 42.553280][ T6840] process_one_work+0x789/0xfc0 [ 42.558109][ T6840] worker_thread+0xaa4/0x1460 [ 42.562766][ T6840] kthread+0x37e/0x3a0 [ 42.566826][ T6840] ? rcu_lock_release+0x20/0x20 [ 42.571654][ T6840] ? kthread_blkcg+0xd0/0xd0 [ 42.576219][ T6840] ret_from_fork+0x1f/0x30 [ 42.580608][ T6840] ================================================================== executing program [ 42.588638][ T6840] Disabling lock debugging due to kernel taint [ 42.595663][ T6840] Kernel panic - not syncing: panic_on_warn set ... [ 42.602255][ T6840] CPU: 1 PID: 6840 Comm: kworker/u5:1 Tainted: G B 5.8.0-rc7-syzkaller #0 [ 42.612161][ T6840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.622192][ T6840] Workqueue: hci0 hci_rx_work [ 42.626834][ T6840] Call Trace: [ 42.630091][ T6840] dump_stack+0x1f0/0x31e [ 42.634391][ T6840] panic+0x264/0x7a0 [ 42.638256][ T6840] ? trace_hardirqs_on+0x30/0x80 [ 42.643310][ T6840] kasan_report+0x1c9/0x1d0 [ 42.647804][ T6840] ? amp_read_loc_assoc_final_data+0x115/0x260 [ 42.653928][ T6840] check_memory_region+0x2b5/0x2f0 [ 42.659009][ T6840] amp_read_loc_assoc_final_data+0x115/0x260 [ 42.664957][ T6840] ? rcu_lock_release+0x5/0x20 [ 42.669688][ T6840] hci_event_packet+0x82b2/0x18260 [ 42.674785][ T6840] ? trace_lock_release+0x137/0x1a0 [ 42.679953][ T6840] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 42.685760][ T6840] ? lockdep_hardirqs_on+0x38/0xe0 [ 42.690836][ T6840] hci_rx_work+0x236/0x9c0 [ 42.695222][ T6840] process_one_work+0x789/0xfc0 [ 42.700044][ T6840] worker_thread+0xaa4/0x1460 [ 42.704691][ T6840] kthread+0x37e/0x3a0 [ 42.708743][ T6840] ? rcu_lock_release+0x20/0x20 [ 42.713561][ T6840] ? kthread_blkcg+0xd0/0xd0 [ 42.718116][ T6840] ret_from_fork+0x1f/0x30 [ 42.723678][ T6840] Kernel Offset: disabled [ 42.727993][ T6840] Rebooting in 86400 seconds..