summaryrefslogtreecommitdiff
path: root/arch/x86/crypto
diff options
context:
space:
mode:
authorShreyansh Chouhan <chouhan.shreyansh630@gmail.com>2021-08-22 06:45:14 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2021-08-27 11:30:19 +0300
commit72ff2bf04db2a48840df93a461b7115900f46c05 (patch)
tree1c531524d701de54ed6e289a338ba8a784be2406 /arch/x86/crypto
parentcedcf527d59bcca5f87f52ea34a157bbc6e7a3a8 (diff)
downloadlinux-72ff2bf04db2a48840df93a461b7115900f46c05.tar.xz
crypto: aesni - xts_crypt() return if walk.nbytes is 0
xts_crypt() code doesn't call kernel_fpu_end() after calling kernel_fpu_begin() if walk.nbytes is 0. The correct behavior should be not calling kernel_fpu_begin() if walk.nbytes is 0. Reported-by: syzbot+20191dc583eff8602d2d@syzkaller.appspotmail.com Signed-off-by: Shreyansh Chouhan <chouhan.shreyansh630@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r--arch/x86/crypto/aesni-intel_glue.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index 388643ca2177..0fc961bef299 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -849,7 +849,7 @@ static int xts_crypt(struct skcipher_request *req, bool encrypt)
return -EINVAL;
err = skcipher_walk_virt(&walk, req, false);
- if (err)
+ if (!walk.nbytes)
return err;
if (unlikely(tail > 0 && walk.nbytes < walk.total)) {