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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-15 14:35:19 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-18 22:13:46 +0800 |
| commit | 75990e5569b2af923a57cf78fd7976fc4ac2763c (patch) | |
| tree | dfe78042ae076bb937653ce77ab6cc36f49f8ad8 /crypto/xts.c | |
| parent | 4df59b3e52bf0961a6b9991e191201fe74c6f822 (diff) | |
| download | linux-crypto-75990e5569b2af923a57cf78fd7976fc4ac2763c.tar.gz linux-crypto-75990e5569b2af923a57cf78fd7976fc4ac2763c.zip | |
crypto: xts - Fix atomic sleep when walking skcipher
When we perform a walk in the completion function, we need to ensure
that it is atomic.
Reported-by: syzbot+6f72c20560060c98b566@syzkaller.appspotmail.com
Fixes: e75189cd49c6 ("crypto: xts - Drop use of auxiliary buffer")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/xts.c')
| -rw-r--r-- | crypto/xts.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/crypto/xts.c b/crypto/xts.c index 847f54f7..2f948328 100644 --- a/crypto/xts.c +++ b/crypto/xts.c @@ -137,8 +137,12 @@ static void crypt_done(struct crypto_async_request *areq, int err) { struct skcipher_request *req = areq->data; - if (!err) + if (!err) { + struct rctx *rctx = skcipher_request_ctx(req); + + rctx->subreq.base.flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; err = xor_tweak_post(req); + } skcipher_request_complete(req, err); } |