team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xe0/0xf0 lib/list_debug.c:51
Read of size 8 at addr ffff888096310c98 by task kworker/u4:5/9279

CPU: 1 PID: 9279 Comm: kworker/u4:5 Not tainted 4.14.228-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
 __list_del_entry_valid+0xe0/0xf0 lib/list_debug.c:51
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 rds_tcp_conn_free+0x84/0x1c0 net/rds/tcp.c:310
 rds_conn_path_destroy net/rds/connection.c:408 [inline]
 rds_conn_destroy+0x4b3/0x730 net/rds/connection.c:439
 rds_tcp_kill_sock net/rds/tcp.c:545 [inline]
 rds_tcp_dev_event+0x79a/0xa30 net/rds/tcp.c:573
 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93
 call_netdevice_notifiers_info net/core/dev.c:1667 [inline]
 call_netdevice_notifiers net/core/dev.c:1683 [inline]
 netdev_run_todo+0x242/0xad0 net/core/dev.c:7927
 default_device_exit_batch+0x2e2/0x380 net/core/dev.c:8747
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145
 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404

Allocated by task 32:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552
 rds_tcp_conn_alloc+0x4d/0x290 net/rds/tcp.c:279
 __rds_conn_create+0xc92/0x16f0 net/rds/connection.c:223
 rds_tcp_accept_one+0x2d9/0x8b0 net/rds/tcp_listen.c:171
 rds_tcp_accept_worker+0x4d/0x70 net/rds/tcp.c:407
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404

Freed by task 9279:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
 rds_conn_path_destroy net/rds/connection.c:408 [inline]
 rds_conn_destroy+0x4b3/0x730 net/rds/connection.c:439
 rds_tcp_kill_sock net/rds/tcp.c:545 [inline]
 rds_tcp_dev_event+0x79a/0xa30 net/rds/tcp.c:573
 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93
 call_netdevice_notifiers_info net/core/dev.c:1667 [inline]
 call_netdevice_notifiers net/core/dev.c:1683 [inline]
 netdev_run_todo+0x242/0xad0 net/core/dev.c:7927
 default_device_exit_batch+0x2e2/0x380 net/core/dev.c:8747
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145
 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404

The buggy address belongs to the object at ffff888096310c98
 which belongs to the cache rds_tcp_connection of size 504
The buggy address is located 0 bytes inside of
 504-byte region [ffff888096310c98, ffff888096310e90)
The buggy address belongs to the page:
page:ffffea000258c400 count:1 mapcount:0 mapping:ffff888096310040 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffff888096310040 0000000000000000 0000000100000006
raw: ffff8880a4c90548 ffffea0002727be0 ffff8882356aa900 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888096310b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888096310c00: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888096310c80: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff888096310d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888096310d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================