Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. syzkaller login: [ 62.044056][ T6843] IPVS: ftp: loaded support on port[0] = 21 executing program [ 62.110304][ T6849] ================================================================== [ 62.118529][ T6849] BUG: KASAN: null-ptr-deref in amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.127050][ T6849] Write of size 8 at addr 0000000000000030 by task kworker/u5:2/6849 [ 62.135115][ T6849] [ 62.137886][ T6849] CPU: 0 PID: 6849 Comm: kworker/u5:2 Not tainted 5.9.0-rc2-syzkaller #0 [ 62.146291][ T6849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.156359][ T6849] Workqueue: hci0 hci_rx_work [ 62.161034][ T6849] Call Trace: [ 62.164326][ T6849] dump_stack+0x18f/0x20d [ 62.169010][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.175188][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.181322][ T6849] kasan_report.cold+0x5/0x37 [ 62.185984][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.192114][ T6849] check_memory_region+0x13d/0x180 [ 62.197205][ T6849] amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.203173][ T6849] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 62.208360][ T6849] ? find_held_lock+0x2d/0x110 [ 62.213118][ T6849] ? hci_event_packet+0x43cc/0x87a8 [ 62.218314][ T6849] ? lock_downgrade+0x830/0x830 [ 62.223166][ T6849] hci_event_packet+0x4407/0x87a8 [ 62.228172][ T6849] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 62.234136][ T6849] ? __lock_acquire+0x16cb/0x5640 [ 62.239163][ T6849] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 62.244689][ T6849] ? lock_acquire+0x1f1/0xad0 [ 62.249359][ T6849] ? skb_dequeue+0x1c/0x180 [ 62.253861][ T6849] ? find_held_lock+0x2d/0x110 [ 62.258697][ T6849] ? mark_lock+0xbc/0x1710 [ 62.263099][ T6849] ? mark_held_locks+0x9f/0xe0 [ 62.267840][ T6849] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.273901][ T6849] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 62.279858][ T6849] ? trace_hardirqs_on+0x5f/0x220 [ 62.284876][ T6849] ? lockdep_hardirqs_on+0x76/0xf0 [ 62.290091][ T6849] hci_rx_work+0x22e/0xb50 [ 62.294514][ T6849] process_one_work+0x94c/0x1670 [ 62.299461][ T6849] ? lock_release+0x8e0/0x8e0 [ 62.304134][ T6849] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 62.309507][ T6849] ? rwlock_bug.part.0+0x90/0x90 [ 62.314826][ T6849] worker_thread+0x64c/0x1120 [ 62.319529][ T6849] ? __kthread_parkme+0x13f/0x1e0 [ 62.324547][ T6849] ? process_one_work+0x1670/0x1670 [ 62.329739][ T6849] kthread+0x3b5/0x4a0 [ 62.333804][ T6849] ? __kthread_bind_mask+0xc0/0xc0 [ 62.338925][ T6849] ? __kthread_bind_mask+0xc0/0xc0 [ 62.344049][ T6849] ret_from_fork+0x1f/0x30 [ 62.348478][ T6849] ================================================================== [ 62.356530][ T6849] Disabling lock debugging due to kernel taint [ 62.362998][ T6849] Kernel panic - not syncing: panic_on_warn set ... [ 62.369607][ T6849] CPU: 0 PID: 6849 Comm: kworker/u5:2 Tainted: G B 5.9.0-rc2-syzkaller #0 [ 62.379399][ T6849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.389493][ T6849] Workqueue: hci0 hci_rx_work [ 62.394185][ T6849] Call Trace: [ 62.397459][ T6849] dump_stack+0x18f/0x20d [ 62.401772][ T6849] ? amp_read_loc_assoc_final_data+0xa0/0x1f0 [ 62.407836][ T6849] panic+0x2e3/0x75c [ 62.411764][ T6849] ? __warn_printk+0xf3/0xf3 [ 62.416360][ T6849] ? preempt_schedule_common+0x59/0xc0 [ 62.421808][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.427947][ T6849] ? preempt_schedule_thunk+0x16/0x18 [ 62.433317][ T6849] ? trace_hardirqs_on+0x55/0x220 [ 62.438330][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.444473][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.450601][ T6849] end_report+0x4d/0x53 [ 62.454739][ T6849] kasan_report.cold+0xd/0x37 [ 62.459413][ T6849] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.465563][ T6849] check_memory_region+0x13d/0x180 [ 62.470652][ T6849] amp_read_loc_assoc_final_data+0x117/0x1f0 [ 62.476609][ T6849] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 62.482044][ T6849] ? find_held_lock+0x2d/0x110 [ 62.486790][ T6849] ? hci_event_packet+0x43cc/0x87a8 [ 62.491962][ T6849] ? lock_downgrade+0x830/0x830 [ 62.496789][ T6849] hci_event_packet+0x4407/0x87a8 [ 62.501789][ T6849] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 62.507747][ T6849] ? __lock_acquire+0x16cb/0x5640 [ 62.512748][ T6849] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 62.518270][ T6849] ? lock_acquire+0x1f1/0xad0 [ 62.522929][ T6849] ? skb_dequeue+0x1c/0x180 [ 62.527408][ T6849] ? find_held_lock+0x2d/0x110 [ 62.532146][ T6849] ? mark_lock+0xbc/0x1710 [ 62.536556][ T6849] ? mark_held_locks+0x9f/0xe0 [ 62.541296][ T6849] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.547096][ T6849] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 62.553068][ T6849] ? trace_hardirqs_on+0x5f/0x220 [ 62.558071][ T6849] ? lockdep_hardirqs_on+0x76/0xf0 [ 62.563160][ T6849] hci_rx_work+0x22e/0xb50 [ 62.567556][ T6849] process_one_work+0x94c/0x1670 [ 62.572491][ T6849] ? lock_release+0x8e0/0x8e0 [ 62.577156][ T6849] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 62.582511][ T6849] ? rwlock_bug.part.0+0x90/0x90 [ 62.587428][ T6849] worker_thread+0x64c/0x1120 [ 62.592094][ T6849] ? __kthread_parkme+0x13f/0x1e0 [ 62.597093][ T6849] ? process_one_work+0x1670/0x1670 [ 62.602281][ T6849] kthread+0x3b5/0x4a0 [ 62.606335][ T6849] ? __kthread_bind_mask+0xc0/0xc0 [ 62.611433][ T6849] ? __kthread_bind_mask+0xc0/0xc0 [ 62.616538][ T6849] ret_from_fork+0x1f/0x30 [ 62.621975][ T6849] Kernel Offset: disabled [ 62.626291][ T6849] Rebooting in 86400 seconds..