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BUG: KASAN: slab-out-of-bounds in tls_push_record+0x1009/0x1210 net/tls/tls_sw.c:255
Read of size 8 at addr ffff888085bd6378 by task syz-executor.1/24795

CPU: 1 PID: 24795 Comm: syz-executor.1 Not tainted 4.14.111 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 print_address_description.cold+0x7c/0x1dc mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report mm/kasan/report.c:409 [inline]
 kasan_report.cold+0xaf/0x2b5 mm/kasan/report.c:393
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
 tls_push_record+0x1009/0x1210 net/tls/tls_sw.c:255
 tls_sw_push_pending_record+0x23/0x30 net/tls/tls_sw.c:299
 tls_handle_open_record net/tls/tls_main.c:158 [inline]
 tls_sk_proto_close+0x5da/0x760 net/tls/tls_main.c:270
 inet_release+0xf2/0x1c0 net/ipv4/af_inet.c:425
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:450
 __sock_release+0xd3/0x2c0 net/socket.c:602
 sock_close+0x1b/0x30 net/socket.c:1139
 __fput+0x277/0x7a0 fs/file_table.c:210
 ____fput+0x16/0x20 fs/file_table.c:244
 task_work_run+0x119/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:267 [inline]
 do_syscall_64+0x4a9/0x630 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4129e1
RSP: 002b:00007ffc500b9930 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004129e1
RDX: 0000001b2fc20000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000073c900 R08: 0000000033bbb85e R09: 0000000033bbb862
R10: 00007ffc500b9a00 R11: 0000000000000293 R12: 0000000000000001
R13: 000000000073c900 R14: 000000000007434f R15: 000000000073bf0c

Allocated by task 24798:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 kmem_cache_alloc_trace+0x152/0x790 mm/slab.c:3618
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 tls_set_sw_offload+0x8b/0xe70 net/tls/tls_sw.c:683
 do_tls_setsockopt_tx net/tls/tls_main.c:443 [inline]
 do_tls_setsockopt net/tls/tls_main.c:468 [inline]
 tls_setsockopt+0x22e/0x410 net/tls/tls_main.c:486
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2966
 SYSC_setsockopt net/socket.c:1865 [inline]
 SyS_setsockopt+0x141/0x210 net/socket.c:1844
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Freed by task 6983:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x75/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xcc/0x270 mm/slab.c:3815
 kvfree+0x4d/0x60 mm/util.c:416
 xt_free_table_info+0x115/0x170 net/netfilter/x_tables.c:1082
 __do_replace+0x438/0x5c0 net/ipv6/netfilter/ip6_tables.c:1107
 do_replace net/ipv6/netfilter/ip6_tables.c:1161 [inline]
 do_ip6t_set_ctl+0x290/0x3ee net/ipv6/netfilter/ip6_tables.c:1685
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt net/ipv6/ipv6_sockglue.c:930 [inline]
 ipv6_setsockopt+0x10b/0x140 net/ipv6/ipv6_sockglue.c:914
 tcp_setsockopt net/ipv4/tcp.c:2805 [inline]
 tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2799
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2966
 SYSC_setsockopt net/socket.c:1865 [inline]
 SyS_setsockopt+0x141/0x210 net/socket.c:1844
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

The buggy address belongs to the object at ffff888085bd6380
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 8 bytes to the left of
 2048-byte region [ffff888085bd6380, ffff888085bd6b80)
The buggy address belongs to the page:
page:ffffea000216f580 count:1 mapcount:0 mapping:ffff888085bd6380 index:0x0 compound_mapcount: 0
flags: 0x1fffc0000008100(slab|head)
raw: 01fffc0000008100 ffff888085bd6380 0000000000000000 0000000100000003
raw: ffffea00022ee620 ffffea00019e3020 ffff8880aa800c40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888085bd6200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888085bd6280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888085bd6300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff888085bd6380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888085bd6400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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