Warning: Permanently added '10.128.1.107' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.376192] ================================================================== [ 31.383694] BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 [ 31.390338] Read of size 8 at addr ffff88809bf611a0 by task kworker/u4:0/5 [ 31.397329] [ 31.398937] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.302-syzkaller #0 [ 31.406274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.415610] Workqueue: tipc_rcv tipc_recv_work [ 31.420165] Call Trace: [ 31.422732] dump_stack+0x1b2/0x281 [ 31.426334] print_address_description.cold+0x54/0x1d3 [ 31.431585] kasan_report_error.cold+0x8a/0x191 [ 31.436227] ? __lock_acquire+0x2c57/0x3f20 [ 31.440521] __asan_report_load8_noabort+0x68/0x70 [ 31.445424] ? tipc_subscrb_rcv_cb+0x2f0/0xa40 [ 31.449982] ? __lock_acquire+0x2c57/0x3f20 [ 31.454275] __lock_acquire+0x2c57/0x3f20 [ 31.458487] ? io_schedule_timeout+0x140/0x140 [ 31.463129] ? __wake_up_common_lock+0xcd/0x140 [ 31.467771] ? trace_hardirqs_on+0x10/0x10 [ 31.471992] ? trace_hardirqs_on+0x10/0x10 [ 31.476202] ? preempt_schedule_common+0x45/0xc0 [ 31.481019] ? ___preempt_schedule+0x16/0x18 [ 31.485665] ? tipc_recvmsg+0x43e/0x9e0 [ 31.489611] ? __local_bh_enable_ip+0x132/0x170 [ 31.494252] lock_acquire+0x170/0x3f0 [ 31.498026] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.502580] _raw_spin_lock_bh+0x2f/0x40 [ 31.506704] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.511257] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.515638] tipc_receive_from_sock+0x25c/0x450 [ 31.520282] ? trace_hardirqs_on+0x10/0x10 [ 31.524576] ? lock_acquire+0x170/0x3f0 [ 31.528628] ? tipc_close_conn+0x200/0x200 [ 31.532836] tipc_recv_work+0x75/0xd0 [ 31.536612] process_one_work+0x793/0x14a0 [ 31.540821] ? work_busy+0x320/0x320 [ 31.544510] ? worker_thread+0x158/0xff0 [ 31.548566] ? _raw_spin_unlock_irq+0x24/0x80 [ 31.553050] worker_thread+0x5cc/0xff0 [ 31.556929] ? rescuer_thread+0xc80/0xc80 [ 31.561056] kthread+0x30d/0x420 [ 31.564400] ? kthread_create_on_node+0xd0/0xd0 [ 31.569051] ret_from_fork+0x24/0x30 [ 31.572757] [ 31.574380] Allocated by task 5: [ 31.577730] kasan_kmalloc+0xeb/0x160 [ 31.581545] kmem_cache_alloc_trace+0x131/0x3d0 [ 31.586189] tipc_subscrb_connect_cb+0x40/0x150 [ 31.590838] tipc_accept_from_sock+0x25b/0x400 [ 31.595395] tipc_recv_work+0x75/0xd0 [ 31.599171] process_one_work+0x793/0x14a0 [ 31.603480] worker_thread+0x5cc/0xff0 [ 31.607343] kthread+0x30d/0x420 [ 31.610689] ret_from_fork+0x24/0x30 [ 31.614373] [ 31.615977] Freed by task 163: [ 31.619146] kasan_slab_free+0xc3/0x1a0 [ 31.623100] kfree+0xc9/0x250 [ 31.626266] tipc_subscrb_put+0x22/0x30 [ 31.630216] tipc_close_conn+0x16a/0x200 [ 31.634250] tipc_send_work+0x41e/0x520 [ 31.638197] process_one_work+0x793/0x14a0 [ 31.642403] worker_thread+0x5cc/0xff0 [ 31.646263] kthread+0x30d/0x420 [ 31.649603] ret_from_fork+0x24/0x30 [ 31.653285] [ 31.654887] The buggy address belongs to the object at ffff88809bf61180 [ 31.654887] which belongs to the cache kmalloc-96 of size 96 [ 31.667341] The buggy address is located 32 bytes inside of [ 31.667341] 96-byte region [ffff88809bf61180, ffff88809bf611e0) [ 31.679012] The buggy address belongs to the page: [ 31.684000] page:ffffea00026fd840 count:1 mapcount:0 mapping:ffff88809bf61000 index:0xffff88809bf61880 [ 31.693501] flags: 0xfff00000000100(slab) [ 31.697620] raw: 00fff00000000100 ffff88809bf61000 ffff88809bf61880 000000010000000b [ 31.705560] raw: ffffea0002846460 ffffea00026988a0 ffff88813fe744c0 0000000000000000 [ 31.713432] page dumped because: kasan: bad access detected [ 31.719117] [ 31.720721] Memory state around the buggy address: [ 31.725627] ffff88809bf61080: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.732985] ffff88809bf61100: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.740324] >ffff88809bf61180: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.747680] ^ [ 31.752067] ffff88809bf61200: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.759400] ffff88809bf61280: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.766743] ================================================================== [ 31.774179] Disabling lock debugging due to kernel taint [ 31.779615] Kernel panic - not syncing: panic_on_warn set ... [ 31.779615] [ 31.787137] CPU: 0 PID: 5 Comm: kworker/u4:0 Tainted: G B 4.14.302-syzkaller #0 [ 31.795785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.805130] Workqueue: tipc_rcv tipc_recv_work [ 31.809689] Call Trace: [ 31.812253] dump_stack+0x1b2/0x281 [ 31.815856] panic+0x1f9/0x42d [ 31.819020] ? add_taint.cold+0x16/0x16 [ 31.822968] ? lock_downgrade+0x740/0x740 [ 31.827095] kasan_end_report+0x43/0x49 [ 31.831047] kasan_report_error.cold+0xa7/0x191 [ 31.835691] ? __lock_acquire+0x2c57/0x3f20 [ 31.839986] __asan_report_load8_noabort+0x68/0x70 [ 31.844979] ? tipc_subscrb_rcv_cb+0x2f0/0xa40 [ 31.849533] ? __lock_acquire+0x2c57/0x3f20 [ 31.853831] __lock_acquire+0x2c57/0x3f20 [ 31.857954] ? io_schedule_timeout+0x140/0x140 [ 31.862512] ? __wake_up_common_lock+0xcd/0x140 [ 31.867154] ? trace_hardirqs_on+0x10/0x10 [ 31.871360] ? trace_hardirqs_on+0x10/0x10 [ 31.875570] ? preempt_schedule_common+0x45/0xc0 [ 31.880298] ? ___preempt_schedule+0x16/0x18 [ 31.884705] ? tipc_recvmsg+0x43e/0x9e0 [ 31.888657] ? __local_bh_enable_ip+0x132/0x170 [ 31.893305] lock_acquire+0x170/0x3f0 [ 31.897081] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.901639] _raw_spin_lock_bh+0x2f/0x40 [ 31.905679] ? tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.910235] tipc_subscrb_rcv_cb+0x4d4/0xa40 [ 31.914618] tipc_receive_from_sock+0x25c/0x450 [ 31.919261] ? trace_hardirqs_on+0x10/0x10 [ 31.923468] ? lock_acquire+0x170/0x3f0 [ 31.927427] ? tipc_close_conn+0x200/0x200 [ 31.931655] tipc_recv_work+0x75/0xd0 [ 31.935439] process_one_work+0x793/0x14a0 [ 31.939651] ? work_busy+0x320/0x320 [ 31.943362] ? worker_thread+0x158/0xff0 [ 31.947398] ? _raw_spin_unlock_irq+0x24/0x80 [ 31.951869] worker_thread+0x5cc/0xff0 [ 31.955730] ? rescuer_thread+0xc80/0xc80 [ 31.959876] kthread+0x30d/0x420 [ 31.963231] ? kthread_create_on_node+0xd0/0xd0 [ 31.967890] ret_from_fork+0x24/0x30 [ 31.971870] Kernel Offset: disabled [ 31.975482] Rebooting in 86400 seconds..