On Fri, Dec 15, 2017 at 12:02:01AM -0800, syzbot wrote: > Call Trace: > __cache_free mm/slab.c:3494 [inline] > kfree+0x1a3/0x250 mm/slab.c:3806 > blkcipher_walk_done+0x72b/0xde0 crypto/blkcipher.c:139 > encrypt+0x20e/0x540 arch/x86/crypto/salsa20_glue.c:79 > skcipher_crypt_blkcipher crypto/skcipher.c:622 [inline] > skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:640 > crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] > _skcipher_recvmsg crypto/algif_skcipher.c:144 [inline] > skcipher_recvmsg+0xa54/0xf20 crypto/algif_skcipher.c:165 > sock_recvmsg_nosec net/socket.c:809 [inline] > sock_recvmsg+0xc9/0x110 net/socket.c:816 > ___sys_recvmsg+0x29b/0x630 net/socket.c:2185 > __sys_recvmsg+0xe2/0x210 net/socket.c:2230 > SYSC_recvmsg net/socket.c:2242 [inline] > SyS_recvmsg+0x2d/0x50 net/socket.c:2237 > entry_SYSCALL_64_fastpath+0x1f/0x96 Already fixed: #syz fix: crypto: salsa20 - fix blkcipher_walk API usage
