Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. syzkaller login: [ 74.053988][ T26] audit: type=1400 audit(1598151531.757:8): avc: denied { execmem } for pid=6847 comm="syz-executor556" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 75.183628][ T6848] IPVS: ftp: loaded support on port[0] = 21 [ 75.250153][ T6854] ================================================================== [ 75.258421][ T6854] BUG: KASAN: null-ptr-deref in amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.266911][ T6854] Write of size 8 at addr 0000000000000030 by task kworker/u5:2/6854 [ 75.274953][ T6854] [ 75.277269][ T6854] CPU: 0 PID: 6854 Comm: kworker/u5:2 Not tainted 5.9.0-rc1-syzkaller #0 [ 75.285657][ T6854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.295704][ T6854] Workqueue: hci0 hci_rx_work [ 75.300355][ T6854] Call Trace: [ 75.303634][ T6854] dump_stack+0x18f/0x20d [ 75.307955][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.314103][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.320244][ T6854] kasan_report.cold+0x5/0x37 [ 75.324914][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.331049][ T6854] check_memory_region+0x13d/0x180 [ 75.336179][ T6854] amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.342137][ T6854] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 75.347311][ T6854] ? find_held_lock+0x2d/0x110 [ 75.352086][ T6854] ? hci_event_packet+0x43cc/0x87a8 [ 75.357259][ T6854] ? lock_downgrade+0x830/0x830 [ 75.362091][ T6854] hci_event_packet+0x4407/0x87a8 [ 75.367093][ T6854] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 75.373088][ T6854] ? __lock_acquire+0x16cb/0x5640 [ 75.378091][ T6854] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 75.383611][ T6854] ? lock_acquire+0x1f1/0xad0 [ 75.388263][ T6854] ? skb_dequeue+0x1c/0x180 [ 75.392746][ T6854] ? find_held_lock+0x2d/0x110 [ 75.397489][ T6854] ? mark_lock+0xbc/0x1710 [ 75.401883][ T6854] ? mark_held_locks+0x9f/0xe0 [ 75.406620][ T6854] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 75.412491][ T6854] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 75.418459][ T6854] ? trace_hardirqs_on+0x5f/0x220 [ 75.424030][ T6854] ? lockdep_hardirqs_on+0x76/0xf0 [ 75.429208][ T6854] hci_rx_work+0x22e/0xb50 [ 75.433603][ T6854] process_one_work+0x94c/0x1670 [ 75.438519][ T6854] ? lock_release+0x8e0/0x8e0 [ 75.443187][ T6854] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 75.448544][ T6854] ? rwlock_bug.part.0+0x90/0x90 [ 75.453474][ T6854] worker_thread+0x64c/0x1120 [ 75.458138][ T6854] ? __kthread_parkme+0x13f/0x1e0 [ 75.463149][ T6854] ? process_one_work+0x1670/0x1670 [ 75.468324][ T6854] kthread+0x3b5/0x4a0 [ 75.472367][ T6854] ? __kthread_bind_mask+0xc0/0xc0 [ 75.477489][ T6854] ? __kthread_bind_mask+0xc0/0xc0 [ 75.482576][ T6854] ret_from_fork+0x1f/0x30 [ 75.486998][ T6854] ================================================================== [ 75.495029][ T6854] Disabling lock debugging due to kernel taint [ 75.503202][ T43] tipc: TX() has been purged, node left! [ 75.518729][ T6854] Kernel panic - not syncing: panic_on_warn set ... [ 75.525326][ T6854] CPU: 0 PID: 6854 Comm: kworker/u5:2 Tainted: G B 5.9.0-rc1-syzkaller #0 [ 75.535111][ T6854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.545166][ T6854] Workqueue: hci0 hci_rx_work [ 75.549846][ T6854] Call Trace: [ 75.553125][ T6854] dump_stack+0x18f/0x20d [ 75.557430][ T6854] ? amp_read_loc_assoc_final_data+0x110/0x1f0 [ 75.563685][ T6854] panic+0x2e3/0x75c [ 75.567550][ T6854] ? __warn_printk+0xf3/0xf3 [ 75.572124][ T6854] ? preempt_schedule_common+0x59/0xc0 [ 75.577555][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.583679][ T6854] ? preempt_schedule_thunk+0x16/0x18 [ 75.589020][ T6854] ? trace_hardirqs_on+0x55/0x220 [ 75.594015][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.600137][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.606270][ T6854] end_report+0x4d/0x53 [ 75.610413][ T6854] kasan_report.cold+0xd/0x37 [ 75.615076][ T6854] ? amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.621201][ T6854] check_memory_region+0x13d/0x180 [ 75.626283][ T6854] amp_read_loc_assoc_final_data+0x117/0x1f0 [ 75.632235][ T6854] ? amp_read_loc_assoc+0x1a0/0x1a0 [ 75.637402][ T6854] ? find_held_lock+0x2d/0x110 [ 75.642136][ T6854] ? hci_event_packet+0x43cc/0x87a8 [ 75.647321][ T6854] ? lock_downgrade+0x830/0x830 [ 75.652145][ T6854] hci_event_packet+0x4407/0x87a8 [ 75.657142][ T6854] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 75.663090][ T6854] ? __lock_acquire+0x16cb/0x5640 [ 75.668098][ T6854] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 75.673623][ T6854] ? lock_acquire+0x1f1/0xad0 [ 75.678283][ T6854] ? skb_dequeue+0x1c/0x180 [ 75.682756][ T6854] ? find_held_lock+0x2d/0x110 [ 75.687494][ T6854] ? mark_lock+0xbc/0x1710 [ 75.691881][ T6854] ? mark_held_locks+0x9f/0xe0 [ 75.696614][ T6854] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 75.702390][ T6854] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 75.708342][ T6854] ? trace_hardirqs_on+0x5f/0x220 [ 75.713350][ T6854] ? lockdep_hardirqs_on+0x76/0xf0 [ 75.718438][ T6854] hci_rx_work+0x22e/0xb50 [ 75.722826][ T6854] process_one_work+0x94c/0x1670 [ 75.727734][ T6854] ? lock_release+0x8e0/0x8e0 [ 75.732380][ T6854] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 75.737720][ T6854] ? rwlock_bug.part.0+0x90/0x90 [ 75.742641][ T6854] worker_thread+0x64c/0x1120 [ 75.747289][ T6854] ? __kthread_parkme+0x13f/0x1e0 [ 75.752285][ T6854] ? process_one_work+0x1670/0x1670 [ 75.757452][ T6854] kthread+0x3b5/0x4a0 [ 75.761492][ T6854] ? __kthread_bind_mask+0xc0/0xc0 [ 75.766572][ T6854] ? __kthread_bind_mask+0xc0/0xc0 [ 75.771654][ T6854] ret_from_fork+0x1f/0x30 [ 75.777346][ T6854] Kernel Offset: disabled [ 75.781659][ T6854] Rebooting in 86400 seconds..