This is a note to let you know that I've just added the patch titled
crypto: algif_hash - wait for crypto_ahash_init() to complete
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-algif_hash-wait-for-crypto_ahash_init-to-complete.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fe09786178f9df713a4b2dd6b93c0a722346bf5e Mon Sep 17 00:00:00 2001
From: "Wang, Rui Y" <rui.y.wang@xxxxxxxxx>
Date: Wed, 27 Jan 2016 17:08:37 +0800
Subject: crypto: algif_hash - wait for crypto_ahash_init() to complete
From: Wang, Rui Y <rui.y.wang@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
crypto/algif_hash.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -54,7 +54,8 @@ static int hash_sendmsg(struct socket *s
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;
}
@@ -125,6 +126,7 @@ static ssize_t hash_sendpage(struct sock
} else {
if (!ctx->more) {
err = crypto_ahash_init(&ctx->req);
+ err = af_alg_wait_for_completion(err, &ctx->completion);
if (err)
goto unlock;
}
Patches currently in stable-queue which might be from rui.y.wang@xxxxxxxxx are
queue-4.4/crypto-algif_hash-wait-for-crypto_ahash_init-to-complete.patch
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