Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts. syzkaller login: [ 33.837672] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.890824] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.969358] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.058048] Bluetooth: hci0 command 0x040f 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 [ 41.701295] ================================================================== [ 41.708915] BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 [ 41.715569] Read of size 8 at addr ffff8880a9925420 by task kworker/u4:0/5 [ 41.722697] [ 41.724319] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.209-syzkaller #0 [ 41.731665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.741013] Workqueue: tipc_rcv tipc_recv_work [ 41.745725] Call Trace: [ 41.748393] dump_stack+0x1b2/0x283 [ 41.752093] print_address_description.cold+0x54/0x1d3 [ 41.757554] kasan_report_error.cold+0x8a/0x194 [ 41.762278] ? __lock_acquire+0x2c57/0x3f20 [ 41.766589] __asan_report_load8_noabort+0x68/0x70 [ 41.771772] ? tipc_subscrb_rcv_cb+0x2c0/0xa40 [ 41.776436] ? __lock_acquire+0x2c57/0x3f20 [ 41.781190] __lock_acquire+0x2c57/0x3f20 [ 41.785344] ? io_schedule_timeout+0x140/0x140 [ 41.790046] ? __wake_up_common_lock+0xcd/0x140 [ 41.794888] ? trace_hardirqs_on+0x10/0x10 [ 41.799172] ? trace_hardirqs_on+0x10/0x10 [ 41.803427] ? preempt_schedule_common+0x45/0xc0 [ 41.808170] ? ___preempt_schedule+0x16/0x18 [ 41.812563] ? tipc_recvmsg+0x43e/0x9e0 [ 41.816524] ? __local_bh_enable_ip+0x132/0x170 [ 41.821382] lock_acquire+0x170/0x3f0 [ 41.825199] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 41.829889] _raw_spin_lock_bh+0x2f/0x40 [ 41.833935] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 41.838620] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 41.843134] tipc_receive_from_sock+0x25c/0x450 [ 41.847849] ? trace_hardirqs_on+0x10/0x10 [ 41.852169] ? lock_acquire+0x170/0x3f0 [ 41.856126] ? tipc_close_conn+0x200/0x200 [ 41.860348] tipc_recv_work+0x75/0xd0 [ 41.864187] process_one_work+0x793/0x14a0 [ 41.868409] ? work_busy+0x320/0x320 [ 41.872111] ? worker_thread+0x158/0xff0 [ 41.876199] ? _raw_spin_unlock_irq+0x24/0x80 [ 41.880679] worker_thread+0x5cc/0xff0 [ 41.884586] ? rescuer_thread+0xc80/0xc80 [ 41.888719] kthread+0x30d/0x420 [ 41.892073] ? kthread_create_on_node+0xd0/0xd0 [ 41.896902] ret_from_fork+0x24/0x30 [ 41.900648] [ 41.902260] Allocated by task 5: [ 41.905661] kasan_kmalloc+0xeb/0x160 [ 41.909448] kmem_cache_alloc_trace+0x131/0x3d0 [ 41.914098] tipc_subscrb_connect_cb+0x40/0x150 [ 41.918754] tipc_accept_from_sock+0x25b/0x400 [ 41.923323] tipc_recv_work+0x75/0xd0 [ 41.927172] process_one_work+0x793/0x14a0 [ 41.931430] worker_thread+0x5cc/0xff0 [ 41.935300] kthread+0x30d/0x420 [ 41.938650] ret_from_fork+0x24/0x30 [ 41.942345] [ 41.943957] Freed by task 22: [ 41.947096] kasan_slab_free+0xc3/0x1a0 [ 41.951054] kfree+0xc9/0x250 [ 41.954139] tipc_subscrb_put+0x22/0x30 [ 41.958095] tipc_close_conn+0x16a/0x200 [ 41.962187] tipc_send_work+0x41e/0x520 [ 41.966184] process_one_work+0x793/0x14a0 [ 41.970535] worker_thread+0x5cc/0xff0 [ 41.974409] kthread+0x30d/0x420 [ 41.977757] ret_from_fork+0x24/0x30 [ 41.981451] [ 41.983068] The buggy address belongs to the object at ffff8880a9925400 [ 41.983068] which belongs to the cache kmalloc-96 of size 96 [ 42.003638] The buggy address is located 32 bytes inside of [ 42.003638] 96-byte region [ffff8880a9925400, ffff8880a9925460) [ 42.015364] The buggy address belongs to the page: [ 42.020343] page:ffffea0002a64940 count:1 mapcount:0 mapping:ffff8880a9925000 index:0xffff8880a9925000 [ 42.029859] flags: 0xfff00000000100(slab) [ 42.033990] raw: 00fff00000000100 ffff8880a9925000 ffff8880a9925000 000000010000001d [ 42.041853] raw: ffffea00027616a0 ffffea0002d84a20 ffff88813fe824c0 0000000000000000 [ 42.049717] page dumped because: kasan: bad access detected [ 42.055409] [ 42.057094] Memory state around the buggy address: [ 42.062006] ffff8880a9925300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 42.069658] ffff8880a9925380: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 42.077002] >ffff8880a9925400: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 42.084480] ^ [ 42.088872] ffff8880a9925480: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 42.096269] ffff8880a9925500: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 42.103612] ================================================================== [ 42.110953] Disabling lock debugging due to kernel taint [ 42.116443] Kernel panic - not syncing: panic_on_warn set ... [ 42.116443] [ 42.123796] CPU: 0 PID: 5 Comm: kworker/u4:0 Tainted: G B 4.14.209-syzkaller #0 [ 42.132353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.141745] Workqueue: tipc_rcv tipc_recv_work [ 42.146308] Call Trace: [ 42.148915] dump_stack+0x1b2/0x283 [ 42.152530] panic+0x1f9/0x42d [ 42.155707] ? add_taint.cold+0x16/0x16 [ 42.159666] ? lock_downgrade+0x740/0x740 [ 42.163886] kasan_end_report+0x43/0x49 [ 42.167846] kasan_report_error.cold+0xa7/0x194 [ 42.172537] ? __lock_acquire+0x2c57/0x3f20 [ 42.176844] __asan_report_load8_noabort+0x68/0x70 [ 42.181759] ? tipc_subscrb_rcv_cb+0x2c0/0xa40 [ 42.186325] ? __lock_acquire+0x2c57/0x3f20 [ 42.190631] __lock_acquire+0x2c57/0x3f20 [ 42.194767] ? io_schedule_timeout+0x140/0x140 [ 42.199332] ? __wake_up_common_lock+0xcd/0x140 [ 42.203986] ? trace_hardirqs_on+0x10/0x10 [ 42.208205] ? trace_hardirqs_on+0x10/0x10 [ 42.212535] ? preempt_schedule_common+0x45/0xc0 [ 42.217274] ? ___preempt_schedule+0x16/0x18 [ 42.221710] ? tipc_recvmsg+0x43e/0x9e0 [ 42.225911] ? __local_bh_enable_ip+0x132/0x170 [ 42.230596] lock_acquire+0x170/0x3f0 [ 42.234381] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 42.238948] _raw_spin_lock_bh+0x2f/0x40 [ 42.242995] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 42.247560] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 42.252089] tipc_receive_from_sock+0x25c/0x450 [ 42.256863] ? trace_hardirqs_on+0x10/0x10 [ 42.261180] ? lock_acquire+0x170/0x3f0 [ 42.265352] ? tipc_close_conn+0x200/0x200 [ 42.269575] tipc_recv_work+0x75/0xd0 [ 42.273447] process_one_work+0x793/0x14a0 [ 42.277667] ? work_busy+0x320/0x320 [ 42.281362] ? worker_thread+0x158/0xff0 [ 42.285518] ? _raw_spin_unlock_irq+0x24/0x80 [ 42.290209] worker_thread+0x5cc/0xff0 [ 42.294124] ? rescuer_thread+0xc80/0xc80 [ 42.298529] kthread+0x30d/0x420 [ 42.301899] ? kthread_create_on_node+0xd0/0xd0 [ 42.306554] ret_from_fork+0x24/0x30 [ 42.311237] Kernel Offset: disabled [ 42.314980] Rebooting in 86400 seconds..