RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000004
RBP: 000000000072bfa0 R08: 0000000020000000 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19a57d96d4
R13: 00000000004c3921 R14: 00000000004d57d8 R15: 0000000000000005
==================================================================
BUG: KASAN: slab-out-of-bounds in tls_fill_prepend include/net/tls.h:368 [inline]
BUG: KASAN: slab-out-of-bounds in tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220
Write of size 1 at addr ffff88017ff98000 by task syz-executor1/11931

CPU: 0 PID: 11931 Comm: syz-executor1 Not tainted 4.19.0-rc7+ #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
validate_nla: 1 callbacks suppressed
netlink: 'syz-executor0': attribute type 1 has an invalid length.
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
nla_parse: 1 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor0'.
 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_store1_noabort+0x17/0x20 mm/kasan/report.c:435
 tls_fill_prepend include/net/tls.h:368 [inline]
 tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220
 tls_sw_push_pending_record+0x22/0x30 net/tls/tls_sw.c:257
 tls_handle_open_record net/tls/tls_main.c:156 [inline]
 tls_sk_proto_close+0x69c/0xbb0 net/tls/tls_main.c:271
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:457
 __sock_release+0xd7/0x250 net/socket.c:579
 sock_close+0x19/0x20 net/socket.c:1141
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411021
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffe73d04640 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000159f87cd R09: 00000000ff455064
R10: 00007ffe73d04570 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000000000a1 R15: 0000000000000001

Allocated by task 5349:
 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
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 user_path_at_empty+0x2d/0x50 fs/namei.c:2608
 do_readlinkat+0x156/0x410 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0x78/0xb0 fs/stat.c:424
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 5349:
 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
 putname+0xf2/0x130 fs/namei.c:261
 filename_lookup+0x39a/0x520 fs/namei.c:2357
 user_path_at_empty+0x40/0x50 fs/namei.c:2608
 do_readlinkat+0x156/0x410 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0x78/0xb0 fs/stat.c:424
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff88017ff986c0
 which belongs to the cache names_cache of size 4096
The buggy address is located 1728 bytes to the left of
 4096-byte region [ffff88017ff986c0, ffff88017ff996c0)
The buggy address belongs to the page:
page:ffffea0005ffe600 count:1 mapcount:0 mapping:ffff8801da972c00 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffffea0006fdba08 ffffea0005ffe688 ffff8801da972c00
raw: 0000000000000000 ffff88017ff986c0 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88017ff97f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88017ff97f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88017ff98000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff88017ff98080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88017ff98100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================