[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. syzkaller login: [ 38.126750] audit: type=1400 audit(1598151779.209:8): avc: denied { execmem } for pid=6456 comm="syz-executor396" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 39.228100] IPVS: ftp: loaded support on port[0] = 21 [ 39.289293] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 39.297419] PGD 0 P4D 0 [ 39.300077] Oops: 0002 [#1] PREEMPT SMP KASAN [ 39.304556] CPU: 0 PID: 6462 Comm: kworker/u5:1 Not tainted 4.19.141-syzkaller #0 [ 39.312165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.321511] Workqueue: hci0 hci_rx_work [ 39.325471] RIP: 0010:amp_read_loc_assoc_final_data+0x102/0x1d0 [ 39.331510] Code: fc ff df 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ae 00 00 00 41 0f b7 84 24 9c 03 00 00 66 89 44 24 23 41 80 4d 30 04 48 8d 6c 24 40 4c 89 e6 48 89 ef e8 a8 59 fe ff [ 39.350392] RSP: 0018:ffff888089047980 EFLAGS: 00010246 [ 39.355731] RAX: 0000000000000000 RBX: 1ffff11011208f30 RCX: 1ffff110123469bb [ 39.362979] RDX: 0000000000000000 RSI: ffffffff8687ee5e RDI: ffff8880908413dc [ 39.370228] RBP: ffff8880a8152380 R08: 0000000000000000 R09: 0000000000000002 [ 39.377491] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888090841040 [ 39.384738] R13: 0000000000000000 R14: ffff888090841f80 R15: ffff888090841040 [ 39.392001] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 39.400206] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.406063] CR2: 0000000000000030 CR3: 0000000091b9b000 CR4: 00000000001406f0 [ 39.413332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.420597] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.427844] Call Trace: [ 39.430427] ? amp_read_loc_assoc+0x180/0x180 [ 39.434903] ? hci_chan_selected_evt+0x1a4/0x360 [ 39.439641] ? lock_downgrade+0x720/0x720 [ 39.443781] ? lock_acquire+0x170/0x3c0 [ 39.447734] ? hci_chan_selected_evt+0x72/0x360 [ 39.452399] ? check_preemption_disabled+0x41/0x280 [ 39.457409] hci_chan_selected_evt+0x1e0/0x360 [ 39.462424] hci_event_packet+0x1c7b/0x862d [ 39.466739] ? mark_held_locks+0xf0/0xf0 [ 39.470796] ? __lock_acquire+0x6de/0x3ff0 [ 39.475112] ? hci_cmd_complete_evt+0xb5e0/0xb5e0 [ 39.479934] ? update_curr+0x3b9/0x870 [ 39.483802] ? debug_object_deactivate+0x1f9/0x2e0 [ 39.488714] ? mark_held_locks+0xa6/0xf0 [ 39.492756] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 39.497940] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 39.503028] hci_rx_work+0x46b/0xa90 [ 39.506737] process_one_work+0x864/0x1570 [ 39.510964] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 39.515613] worker_thread+0x64c/0x1130 [ 39.519693] ? process_one_work+0x1570/0x1570 [ 39.524225] kthread+0x30b/0x410 [ 39.527576] ? kthread_park+0x180/0x180 [ 39.531547] ret_from_fork+0x24/0x30 [ 39.535243] Modules linked in: [ 39.538431] CR2: 0000000000000030 [ 39.541881] ---[ end trace ab9822284fd495e5 ]--- [ 39.546639] RIP: 0010:amp_read_loc_assoc_final_data+0x102/0x1d0 [ 39.552689] Code: fc ff df 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ae 00 00 00 41 0f b7 84 24 9c 03 00 00 66 89 44 24 23 41 80 4d 30 04 48 8d 6c 24 40 4c 89 e6 48 89 ef e8 a8 59 fe ff [ 39.571586] RSP: 0018:ffff888089047980 EFLAGS: 00010246 [ 39.576926] RAX: 0000000000000000 RBX: 1ffff11011208f30 RCX: 1ffff110123469bb [ 39.584190] RDX: 0000000000000000 RSI: ffffffff8687ee5e RDI: ffff8880908413dc [ 39.591454] RBP: ffff8880a8152380 R08: 0000000000000000 R09: 0000000000000002 [ 39.598704] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888090841040 [ 39.605951] R13: 0000000000000000 R14: ffff888090841f80 R15: ffff888090841040 [ 39.613229] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 39.621452] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.627350] CR2: 0000000000000030 CR3: 0000000091b9b000 CR4: 00000000001406f0 [ 39.634600] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.641864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.649113] Kernel panic - not syncing: Fatal exception [ 39.655793] Kernel Offset: disabled [ 39.659413] Rebooting in 86400 seconds..