Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. [ 39.455145] audit: type=1400 audit(1596668019.752:8): avc: denied { execmem } for pid=6375 comm="syz-executor451" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 39.735805] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.643011] Bluetooth: hci0 command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.721585] Bluetooth: hci0 command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.167150] ================================================================== [ 46.174552] BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 [ 46.181188] Read of size 8 at addr ffff88808e77fc20 by task kworker/u4:1/22 [ 46.188253] [ 46.189852] CPU: 0 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.192-syzkaller #0 [ 46.197266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.206595] Workqueue: tipc_rcv tipc_recv_work [ 46.211151] Call Trace: [ 46.213713] dump_stack+0x1b2/0x283 [ 46.217313] print_address_description.cold+0x54/0x1d3 [ 46.222590] kasan_report_error.cold+0x8a/0x194 [ 46.227233] ? __lock_acquire+0x2c57/0x3f20 [ 46.231525] __asan_report_load8_noabort+0x68/0x70 [ 46.236425] ? tipc_subscrb_rcv_cb+0x2c0/0xa40 [ 46.240978] ? __lock_acquire+0x2c57/0x3f20 [ 46.245276] __lock_acquire+0x2c57/0x3f20 [ 46.249395] ? io_schedule_timeout+0x140/0x140 [ 46.253949] ? __wake_up_common_lock+0xcd/0x140 [ 46.258587] ? trace_hardirqs_on+0x10/0x10 [ 46.262795] ? trace_hardirqs_on+0x10/0x10 [ 46.266998] ? preempt_schedule_common+0x45/0xc0 [ 46.271723] ? ___preempt_schedule+0x16/0x18 [ 46.276102] ? tipc_recvmsg+0x436/0x9d0 [ 46.280045] ? __local_bh_enable_ip+0x132/0x170 [ 46.284684] lock_acquire+0x170/0x3f0 [ 46.288456] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.293008] _raw_spin_lock_bh+0x2f/0x40 [ 46.297048] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.301602] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.305981] tipc_receive_from_sock+0x25c/0x450 [ 46.310619] ? trace_hardirqs_on+0x10/0x10 [ 46.314824] ? lock_acquire+0x170/0x3f0 [ 46.318768] ? tipc_close_conn+0x200/0x200 [ 46.322974] tipc_recv_work+0x75/0xd0 [ 46.326745] process_one_work+0x793/0x14a0 [ 46.330956] ? work_busy+0x320/0x320 [ 46.334645] ? worker_thread+0x158/0xff0 [ 46.338682] ? _raw_spin_unlock_irq+0x24/0x80 [ 46.343157] worker_thread+0x5cc/0xff0 [ 46.347014] ? rescuer_thread+0xc80/0xc80 [ 46.351131] kthread+0x30d/0x420 [ 46.354466] ? kthread_create_on_node+0xd0/0xd0 [ 46.359102] ret_from_fork+0x24/0x30 [ 46.362783] [ 46.364383] Allocated by task 22: [ 46.367806] kasan_kmalloc+0xeb/0x160 [ 46.371579] kmem_cache_alloc_trace+0x131/0x3d0 [ 46.376222] tipc_subscrb_connect_cb+0x40/0x150 [ 46.380858] tipc_accept_from_sock+0x25b/0x400 [ 46.385408] tipc_recv_work+0x75/0xd0 [ 46.389177] process_one_work+0x793/0x14a0 [ 46.393382] worker_thread+0x5cc/0xff0 [ 46.397250] kthread+0x30d/0x420 [ 46.400589] ret_from_fork+0x24/0x30 [ 46.404270] [ 46.405869] Freed by task 5: [ 46.408856] kasan_slab_free+0xc3/0x1a0 [ 46.412800] kfree+0xc9/0x250 [ 46.415876] tipc_subscrb_put+0x22/0x30 [ 46.419817] tipc_close_conn+0x16a/0x200 [ 46.423849] tipc_send_work+0x41e/0x520 [ 46.427792] process_one_work+0x793/0x14a0 [ 46.431997] worker_thread+0x5cc/0xff0 [ 46.435851] kthread+0x30d/0x420 [ 46.439183] ret_from_fork+0x24/0x30 [ 46.442863] [ 46.444463] The buggy address belongs to the object at ffff88808e77fc00 [ 46.444463] which belongs to the cache kmalloc-96 of size 96 [ 46.456925] The buggy address is located 32 bytes inside of [ 46.456925] 96-byte region [ffff88808e77fc00, ffff88808e77fc60) [ 46.468605] The buggy address belongs to the page: [ 46.473506] page:ffffea000239dfc0 count:1 mapcount:0 mapping:ffff88808e77f000 index:0x0 [ 46.481616] flags: 0xfffe0000000100(slab) [ 46.485733] raw: 00fffe0000000100 ffff88808e77f000 0000000000000000 0000000100000020 [ 46.493584] raw: ffffea0002490920 ffffea00024410e0 ffff88812fe524c0 0000000000000000 [ 46.501445] page dumped because: kasan: bad access detected [ 46.507121] [ 46.508716] Memory state around the buggy address: [ 46.513615] ffff88808e77fb00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 46.520944] ffff88808e77fb80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 46.528285] >ffff88808e77fc00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 46.535613] ^ [ 46.539990] ffff88808e77fc80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 46.547317] ffff88808e77fd00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 46.554645] ================================================================== [ 46.561985] Disabling lock debugging due to kernel taint [ 46.567406] Kernel panic - not syncing: panic_on_warn set ... [ 46.567406] [ 46.574737] CPU: 0 PID: 22 Comm: kworker/u4:1 Tainted: G B 4.14.192-syzkaller #0 [ 46.583366] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.592696] Workqueue: tipc_rcv tipc_recv_work [ 46.597248] Call Trace: [ 46.599821] dump_stack+0x1b2/0x283 [ 46.603442] panic+0x1f9/0x42d [ 46.606607] ? add_taint.cold+0x16/0x16 [ 46.610570] ? lock_downgrade+0x740/0x740 [ 46.614690] kasan_end_report+0x43/0x49 [ 46.618635] kasan_report_error.cold+0xa7/0x194 [ 46.623276] ? __lock_acquire+0x2c57/0x3f20 [ 46.627574] __asan_report_load8_noabort+0x68/0x70 [ 46.632483] ? tipc_subscrb_rcv_cb+0x2c0/0xa40 [ 46.637053] ? __lock_acquire+0x2c57/0x3f20 [ 46.641367] __lock_acquire+0x2c57/0x3f20 [ 46.645505] ? io_schedule_timeout+0x140/0x140 [ 46.650076] ? __wake_up_common_lock+0xcd/0x140 [ 46.654753] ? trace_hardirqs_on+0x10/0x10 [ 46.658968] ? trace_hardirqs_on+0x10/0x10 [ 46.663172] ? preempt_schedule_common+0x45/0xc0 [ 46.667896] ? ___preempt_schedule+0x16/0x18 [ 46.672276] ? tipc_recvmsg+0x436/0x9d0 [ 46.676222] ? __local_bh_enable_ip+0x132/0x170 [ 46.680877] lock_acquire+0x170/0x3f0 [ 46.684660] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.689210] _raw_spin_lock_bh+0x2f/0x40 [ 46.693241] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.697792] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 46.702172] tipc_receive_from_sock+0x25c/0x450 [ 46.706809] ? trace_hardirqs_on+0x10/0x10 [ 46.711016] ? lock_acquire+0x170/0x3f0 [ 46.714976] ? tipc_close_conn+0x200/0x200 [ 46.719182] tipc_recv_work+0x75/0xd0 [ 46.723040] process_one_work+0x793/0x14a0 [ 46.727243] ? work_busy+0x320/0x320 [ 46.730928] ? worker_thread+0x158/0xff0 [ 46.734957] ? _raw_spin_unlock_irq+0x24/0x80 [ 46.739420] worker_thread+0x5cc/0xff0 [ 46.743279] ? rescuer_thread+0xc80/0xc80 [ 46.747395] kthread+0x30d/0x420 [ 46.750729] ? kthread_create_on_node+0xd0/0xd0 [ 46.755374] ret_from_fork+0x24/0x30 [ 46.760323] Kernel Offset: disabled [ 46.763940] Rebooting in 86400 seconds..