Commit 7b2a18e0 authored by Tadeusz Struk's avatar Tadeusz Struk Committed by Herbert Xu

crypto: algif_aead - fix invalid sgl linking

This patch fixes it.
Also minor updates to comments.
Signed-off-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ec59a65d
......@@ -33,7 +33,7 @@ struct aead_ctx {
/*
* RSGL_MAX_ENTRIES is an artificial limit where user space at maximum
* can cause the kernel to allocate RSGL_MAX_ENTRIES * ALG_MAX_PAGES
* bytes
* pages
*/
#define RSGL_MAX_ENTRIES ALG_MAX_PAGES
struct af_alg_sgl rsgl[RSGL_MAX_ENTRIES];
......@@ -435,11 +435,10 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
if (err < 0)
goto unlock;
usedpages += err;
/* chain the new scatterlist with initial list */
/* chain the new scatterlist with previous one */
if (cnt)
scatterwalk_crypto_chain(ctx->rsgl[0].sg,
ctx->rsgl[cnt].sg, 1,
sg_nents(ctx->rsgl[cnt-1].sg));
af_alg_link_sg(&ctx->rsgl[cnt-1], &ctx->rsgl[cnt]);
/* we do not need more iovecs as we have sufficient memory */
if (outlen <= usedpages)
break;
......
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