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 35952 ns
==================================================================
BUG: KASAN: use-after-free in ccid_hc_tx_delete+0xe0/0x100 net/dccp/ccid.c:188
Read of size 8 at addr ffff8801c3d15380 by task ksoftirqd/1/16

CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 4.19.0-rc5-next-20180928+ #84
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+0x1d3/0x2c4 lib/dump_stack.c:113
 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.9+0x242/0x309 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+0x107/0xa80 net/core/sock.c:1560
 __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
 rcu_do_batch kernel/rcu/tree.c:2437 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline]
 rcu_process_callbacks+0xff9/0x1ad0 kernel/rcu/tree.c:2697
 __do_softirq+0x30b/0xb03 kernel/softirq.c:292
 run_ksoftirqd+0x94/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Allocated by task 7941:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x730 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+0x188/0x280 net/dccp/feat.c:344
 dccp_feat_activate_values+0x3c1/0x80a net/dccp/feat.c:1538
 dccp_rcv_request_sent_state_process net/dccp/input.c:472 [inline]
 dccp_rcv_state_process+0x11d4/0x1a32 net/dccp/input.c:678
 dccp_v6_do_rcv+0x271/0xbf0 net/dccp/ipv6.c:638
 sk_backlog_rcv include/net/sock.h:932 [inline]
 __release_sock+0x12a/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+0x641/0x1150 net/ipv4/af_inet.c:680
 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719
 __sys_connect+0x37d/0x4c0 net/socket.c:1665
 __do_sys_connect net/socket.c:1676 [inline]
 __se_sys_connect net/socket.c:1673 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1673
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 7959:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 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+0x83/0x290 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+0x188/0x280 net/dccp/feat.c:344
 dccp_feat_activate_values+0x3c1/0x80a net/dccp/feat.c:1538
 dccp_create_openreq_child+0x47a/0x630 net/dccp/minisocks.c:127
 dccp_v6_request_recv_sock+0x278/0x2020 net/dccp/ipv6.c:466
 dccp_check_req+0x47d/0x6d0 net/dccp/minisocks.c:196
 dccp_v6_rcv+0x874/0x1ce9 net/dccp/ipv6.c:744
 ip6_input_finish+0x3fc/0x1aa0 net/ipv6/ip6_input.c:384
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ip6_input+0xe4/0x600 net/ipv6/ip6_input.c:427
 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+0x10e/0x640 net/ipv6/ip6_input.c:272
 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4894
 __netif_receive_skb+0x27/0x1e0 net/core/dev.c:5004
 process_backlog+0x218/0x6f0 net/core/dev.c:5808
 napi_poll net/core/dev.c:6228 [inline]
 net_rx_action+0x7c5/0x1950 net/core/dev.c:6294
 __do_softirq+0x30b/0xb03 kernel/softirq.c:292

The buggy address belongs to the object at ffff8801c3d15380
 which belongs to the cache ccid2_hc_tx_sock of size 1240
The buggy address is located 0 bytes inside of
 1240-byte region [ffff8801c3d15380, ffff8801c3d15858)
The buggy address belongs to the page:
page:ffffea00070f4500 count:1 mapcount:0 mapping:ffff8801ca84b980 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000010200(slab|head)
raw: 02fffc0000010200 ffffea00070f2608 ffffea0006fdaf08 ffff8801ca84b980
raw: 0000000000000000 ffff8801c3d14300 0000000100000005 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c3d15280: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
 ffff8801c3d15300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801c3d15380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8801c3d15400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801c3d15480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================