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BUG: KASAN: use-after-free in memcpy include/linux/string.h:352 [inline]
BUG: KASAN: use-after-free in generic_gcmaes_encrypt+0xc6/0x190 arch/x86/crypto/aesni-intel_glue.c:1134
Read of size 12 at addr ffff88809f85d280 by task kworker/0:2/2971

CPU: 0 PID: 2971 Comm: kworker/0:2 Not tainted 4.20.0-rc7-next-20181224 #189
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: pencrypt padata_parallel_worker
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113
 print_address_description.cold.5+0x9/0x1ff mm/kasan/report.c:187
 kasan_report.cold.6+0x1b/0x39 mm/kasan/report.c:317
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x13e/0x1b0 mm/kasan/generic.c:191
 memcpy+0x23/0x50 mm/kasan/common.c:130
 memcpy include/linux/string.h:352 [inline]
 generic_gcmaes_encrypt+0xc6/0x190 arch/x86/crypto/aesni-intel_glue.c:1134
 crypto_aead_encrypt include/crypto/aead.h:336 [inline]
 gcmaes_wrapper_encrypt+0x15d/0x200 arch/x86/crypto/aesni-intel_glue.c:986
 crypto_aead_encrypt include/crypto/aead.h:336 [inline]
 pcrypt_aead_enc+0xcb/0x190 crypto/pcrypt.c:143
 padata_parallel_worker+0x49d/0x760 kernel/padata.c:86
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Allocated by task 8185:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 kasan_kmalloc+0xcb/0xd0 mm/kasan/common.c:482
 kmem_cache_alloc_trace+0x154/0x750 mm/slab.c:3607
 kmalloc include/linux/slab.h:545 [inline]
 tls_set_sw_offload+0xcb3/0x1390 net/tls/tls_sw.c:1971
 do_tls_setsockopt_conf net/tls/tls_main.c:469 [inline]
 do_tls_setsockopt net/tls/tls_main.c:516 [inline]
 tls_setsockopt+0x689/0x770 net/tls/tls_main.c:535
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2986
 __sys_setsockopt+0x1ba/0x3c0 net/socket.c:1902
 __do_sys_setsockopt net/socket.c:1913 [inline]
 __se_sys_setsockopt net/socket.c:1910 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1910
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8185:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/common.c:444
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:452
 __cache_free mm/slab.c:3485 [inline]
 kfree+0xcf/0x230 mm/slab.c:3804
 tls_sk_proto_close+0x5fa/0x750 net/tls/tls_main.c:279
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:458
 __sock_release+0xd7/0x250 net/socket.c:579
 sock_close+0x19/0x20 net/socket.c:1141
 __fput+0x3bc/0xa90 fs/file_table.c:279
 ____fput+0x15/0x20 fs/file_table.c:312
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [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

The buggy address belongs to the object at ffff88809f85d280
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffff88809f85d280, ffff88809f85d2a0)
The buggy address belongs to the page:
page:ffffea00027e1740 count:1 mapcount:0 mapping:ffff88812c3f01c0 index:0xffff88809f85dfc1
flags: 0x1fffc0000000200(slab)
raw: 01fffc0000000200 ffffea000281f088 ffffea000281ae08 ffff88812c3f01c0
raw: ffff88809f85dfc1 ffff88809f85d000 000000010000003f 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809f85d180: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff88809f85d200: 00 01 fc fc fc fc fc fc 00 01 fc fc fc fc fc fc
>ffff88809f85d280: fb fb fb fb fc fc fc fc 00 01 fc fc fc fc fc fc
                   ^
 ffff88809f85d300: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff88809f85d380: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
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