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| author | Wang, Rui Y <rui.y.wang@intel.com> | 2016-01-27 17:08:37 +0800 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2016-02-24 09:45:12 +0100 |
| commit | 828e12a71f898d9bf817ae5e471ced7c88a19490 (patch) | |
| tree | a1d75837523dddc66e08907dd3be7fa9b8c41296 /crypto | |
| parent | f282156266930ed4a6c71fe6b4ff1e8bc6daaaa1 (diff) | |
| download | lwn-828e12a71f898d9bf817ae5e471ced7c88a19490.tar.gz lwn-828e12a71f898d9bf817ae5e471ced7c88a19490.zip | |
crypto: algif_hash - wait for crypto_ahash_init() to complete
commit fe09786178f9df713a4b2dd6b93c0a722346bf5e upstream.
hash_sendmsg/sendpage() need to wait for the completion
of crypto_ahash_init() otherwise it can cause panic.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_hash.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index 402dae150ec0..b351127426db 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -56,7 +56,8 @@ static int hash_sendmsg(struct kiocb *unused, struct socket *sock, lock_sock(sk); if (!ctx->more) { - err = crypto_ahash_init(&ctx->req); + err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req), + &ctx->completion); if (err) goto unlock; } @@ -136,6 +137,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page, } else { if (!ctx->more) { err = crypto_ahash_init(&ctx->req); + err = af_alg_wait_for_completion(err, &ctx->completion); if (err) goto unlock; } |