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BUG: KASAN: wild-memory-access in memcpy include/linux/string.h:344 [inline]
BUG: KASAN: wild-memory-access in memcpy_dir crypto/scatterwalk.c:28 [inline]
BUG: KASAN: wild-memory-access in scatterwalk_copychunks+0x206/0x480 crypto/scatterwalk.c:43
Write of size 16 at addr 00050800cd5fc918 by task syz-executor1/5715

CPU: 0 PID: 5715 Comm: syz-executor1 Not tainted 4.15.0-rc5+ #170
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+0x194/0x257 lib/dump_stack.c:53
 kasan_report_error mm/kasan/report.c:349 [inline]
 kasan_report+0x13b/0x340 mm/kasan/report.c:409
 check_memory_region_inline mm/kasan/kasan.c:260 [inline]
 check_memory_region+0x137/0x190 mm/kasan/kasan.c:267
 memcpy+0x37/0x50 mm/kasan/kasan.c:303
 memcpy include/linux/string.h:344 [inline]
 memcpy_dir crypto/scatterwalk.c:28 [inline]
 scatterwalk_copychunks+0x206/0x480 crypto/scatterwalk.c:43
 blkcipher_done_slow crypto/blkcipher.c:81 [inline]
 blkcipher_walk_done+0xa4b/0xde0 crypto/blkcipher.c:118
 glue_ctr_crypt_128bit+0x597/0xc20 arch/x86/crypto/glue_helper.c:289
 ctr_crypt+0x34/0x40 arch/x86/crypto/serpent_avx2_glue.c:168
 skcipher_crypt_blkcipher crypto/skcipher.c:620 [inline]
 skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:638
 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline]
 chacha_decrypt crypto/chacha20poly1305.c:152 [inline]
 poly_tail_continue+0x42a/0x6b0 crypto/chacha20poly1305.c:167
 poly_tail+0x40f/0x520 crypto/chacha20poly1305.c:201
 poly_cipherpad+0x33e/0x470 crypto/chacha20poly1305.c:231
 poly_cipher+0x303/0x440 crypto/chacha20poly1305.c:262
 poly_adpad+0x347/0x480 crypto/chacha20poly1305.c:292
 poly_ad+0x25c/0x300 crypto/chacha20poly1305.c:316
 poly_setkey+0x2fc/0x3e0 crypto/chacha20poly1305.c:343
 poly_init+0x16c/0x1d0 crypto/chacha20poly1305.c:366
 poly_genkey+0x422/0x590 crypto/chacha20poly1305.c:406
 chachapoly_decrypt+0x73/0x90 crypto/chacha20poly1305.c:488
 crypto_aead_decrypt include/crypto/aead.h:362 [inline]
 _aead_recvmsg crypto/algif_aead.c:314 [inline]
 aead_recvmsg+0x154a/0x1cf0 crypto/algif_aead.c:335
 sock_recvmsg_nosec net/socket.c:801 [inline]
 sock_recvmsg+0xc9/0x110 net/socket.c:808
 ___sys_recvmsg+0x2a4/0x640 net/socket.c:2177
 __sys_recvmsg+0xe2/0x210 net/socket.c:2222
 SYSC_recvmsg net/socket.c:2234 [inline]
 SyS_recvmsg+0x2d/0x50 net/socket.c:2229
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007fc68a301c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fc68a302700 RCX: 0000000000452ac9
RDX: 0000000000000000 RSI: 0000000020170fc8 RDI: 0000000000000017
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f7ef R14: 00007fc68a3029c0 R15: 0000000000000000
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