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authorMilan Broz <gmazyland@gmail.com>2014-11-22 09:36:04 +0100
committerMike Snitzer <snitzer@redhat.com>2014-12-02 10:25:07 -0500
commit1a71d6ffe18c0d0f03fc8531949cc8ed41d702ee (patch)
tree23a55aac2b85ea96d94ad54897293020d4615167 /drivers/md
parent02717d9855400c12c6e338ce1f5c2e1310def49a (diff)
dm crypt: use memzero_explicit for on-stack buffer
Use memzero_explicit to cleanup sensitive data allocated on stack to prevent the compiler from optimizing and removing memset() calls. Signed-off-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-crypt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index cd15e0801228..ce11a90a33c3 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -711,7 +711,7 @@ static int crypt_iv_tcw_whitening(struct crypt_config *cc,
for (i = 0; i < ((1 << SECTOR_SHIFT) / 8); i++)
crypto_xor(data + i * 8, buf, 8);
out:
- memset(buf, 0, sizeof(buf));
+ memzero_explicit(buf, sizeof(buf));
return r;
}

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