8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
hrtimer: interrupt took 27846 ns
==================================================================
BUG: KASAN: use-after-free in ccid_hc_tx_delete+0xe0/0x100 net/dccp/ccid.c:188
Read of size 8 at addr ffff8801b6d720c0 by task ksoftirqd/0/9

CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.0-rc1-next-20180827+ #48
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 ccid_hc_tx_delete+0xe0/0x100 net/dccp/ccid.c:188
 dccp_sk_destruct+0x3c/0x80 net/dccp/proto.c:181
 __sk_destruct+0x107/0xa60 net/core/sock.c:1560
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2880 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2847 [inline]
 rcu_process_callbacks+0xf78/0x27c0 kernel/rcu/tree.c:2864
 __do_softirq+0x2eb/0xa74 kernel/softirq.c:292
 run_ksoftirqd+0x88/0x100 kernel/softirq.c:653
 smpboot_thread_fn+0x425/0x880 kernel/smpboot.c:164
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415

Allocated by task 6523:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x710 mm/slab.c:3554
 ccid_new+0x25b/0x3e0 net/dccp/ccid.c:151
 dccp_hdlr_ccid+0x27/0x150 net/dccp/feat.c:44
 __dccp_feat_activate+0x184/0x270 net/dccp/feat.c:344
 dccp_feat_activate_values+0x3b6/0x839 net/dccp/feat.c:1538
 dccp_rcv_request_sent_state_process net/dccp/input.c:472 [inline]
 dccp_rcv_state_process+0x11dc/0x1a30 net/dccp/input.c:678
 dccp_v6_do_rcv+0x26f/0xb80 net/dccp/ipv6.c:638
 sk_backlog_rcv include/net/sock.h:931 [inline]
 __release_sock+0x12f/0x3a0 net/core/sock.c:2336
 release_sock+0xad/0x2c0 net/core/sock.c:2849
 inet_wait_for_connect net/ipv4/af_inet.c:588 [inline]
 __inet_stream_connect+0x61f/0x1160 net/ipv4/af_inet.c:680
 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719
 __sys_connect+0x37d/0x4c0 net/socket.c:1663
 __do_sys_connect net/socket.c:1674 [inline]
 __se_sys_connect net/socket.c:1671 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1671
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 6539:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kmem_cache_free+0x86/0x280 mm/slab.c:3756
 ccid_hc_tx_delete+0xc3/0x100 net/dccp/ccid.c:190
 dccp_hdlr_ccid+0x7d/0x150 net/dccp/feat.c:53
 __dccp_feat_activate+0x184/0x270 net/dccp/feat.c:344
 dccp_feat_activate_values+0x3b6/0x839 net/dccp/feat.c:1538
 dccp_create_openreq_child+0x47a/0x620 net/dccp/minisocks.c:127
 dccp_v6_request_recv_sock+0x253/0x2040 net/dccp/ipv6.c:466
 dccp_check_req+0x46e/0x6c0 net/dccp/minisocks.c:196
 dccp_v6_rcv+0x88e/0x1d9c net/dccp/ipv6.c:744
 ip6_input_finish+0x407/0x1a40 net/ipv6/ip6_input.c:383
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ip6_input+0xe9/0x600 net/ipv6/ip6_input.c:426
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x17a/0x330 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ipv6_rcv+0x11e/0x650 net/ipv6/ip6_input.c:271
 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4892
 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5002
 process_backlog+0x219/0x760 net/core/dev.c:5808
 napi_poll net/core/dev.c:6228 [inline]
 net_rx_action+0x799/0x1900 net/core/dev.c:6294
 __do_softirq+0x2eb/0xa74 kernel/softirq.c:292

The buggy address belongs to the object at ffff8801b6d720c0
 which belongs to the cache ccid2_hc_tx_sock of size 1240
The buggy address is located 0 bytes inside of
 1240-byte region [ffff8801b6d720c0, ffff8801b6d72598)
The buggy address belongs to the page:
page:ffffea0006db5c80 count:1 mapcount:0 mapping:ffff8801cd8b5080 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffffea00072e1188 ffffea000726bd88 ffff8801cd8b5080
raw: 0000000000000000 ffff8801b6d720c0 0000000100000005 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801b6d71f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801b6d72000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801b6d72080: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
                                           ^
 ffff8801b6d72100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801b6d72180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================