diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-12-19 11:27:24 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-12-22 09:02:40 +0100 |
| commit | af955bf15d2c27496b0269b1f05c26f758c68314 (patch) | |
| tree | 93a46f7d3a6038882d956007e9b8a927df37b36c /crypto/algif_skcipher.c | |
| parent | crypto: chacha20poly1305 - validate the digest size (diff) | |
| download | linux-af955bf15d2c27496b0269b1f05c26f758c68314.tar.xz linux-af955bf15d2c27496b0269b1f05c26f758c68314.zip | |
crypto: af_alg - Fix race around ctx->rcvused by making it atomic_t
This variable was increased and decreased without any protection.
Result was an occasional misscount and negative wrap around resulting
in false resource allocation failures.
Fixes: 7d2c3f54e6f6 ("crypto: af_alg - remove locking in async callback")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algif_skcipher.c')
| -rw-r--r-- | crypto/algif_skcipher.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index baef9bfccdda..c5c47b680152 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -390,7 +390,7 @@ static int skcipher_accept_parent_nokey(void *private, struct sock *sk) INIT_LIST_HEAD(&ctx->tsgl_list); ctx->len = len; ctx->used = 0; - ctx->rcvused = 0; + atomic_set(&ctx->rcvused, 0); ctx->more = 0; ctx->merge = 0; ctx->enc = 0; |