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| author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-09-09 14:27:07 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-09-10 17:22:55 +0800 |
| commit | 9da75de030bb6e49475ef37c8495d07e98cfeb33 (patch) | |
| tree | 728713e8fbfe7790c480e663fab64d6ce4b9af7b | |
| parent | f1ab428711358fbb747ba392c3448462494e6c6a (diff) | |
| download | linux-9da75de030bb6e49475ef37c8495d07e98cfeb33.tar.gz linux-9da75de030bb6e49475ef37c8495d07e98cfeb33.tar.bz2 linux-9da75de030bb6e49475ef37c8495d07e98cfeb33.zip | |
crypto: sunxi-ss - Fix a possible driver hang with ciphers
The sun4i_ss_opti_poll function cipher data until the output miter have
a length of 0.
If the crypto API client, give more SGs than necessary this could result
in an infinite loop.
Fix it by checking for remaining bytes, just like sun4i_ss_cipher_poll().
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss-cipher.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c index e070c316e8b7..a19ee127edca 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c @@ -104,7 +104,7 @@ static int sun4i_ss_opti_poll(struct ablkcipher_request *areq) sg_miter_next(&mo); oo = 0; } - } while (mo.length > 0); + } while (oleft > 0); if (areq->info) { for (i = 0; i < 4 && i < ivsize / 4; i++) { |