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Subject[PATCH] crypto: amlogic - fix two resources leak
Date
This patch fixes two resources leak that occur on error path.

Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1487403 ("RESOURCE_LEAK")
Addresses-Coverity-ID: 1487401 ("Resource leaks")
Fixes: 48fe583fe541 ("crypto: amlogic - Add crypto accelerator for amlogic GXL")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/amlogic/amlogic-gxl-cipher.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
index e9283ffdbd23..58b717aab6e8 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
@@ -131,7 +131,8 @@ static int meson_cipher(struct skcipher_request *areq)
if (areq->iv && ivsize > 0) {
if (ivsize > areq->cryptlen) {
dev_err(mc->dev, "invalid ivsize=%d vs len=%d\n", ivsize, areq->cryptlen);
- return -EINVAL;
+ err = -EINVAL;
+ goto theend;
}
memcpy(bkeyiv + 32, areq->iv, ivsize);
keyivlen = 48;
@@ -151,9 +152,10 @@ static int meson_cipher(struct skcipher_request *areq)

phykeyiv = dma_map_single(mc->dev, bkeyiv, keyivlen,
DMA_TO_DEVICE);
- if (dma_mapping_error(mc->dev, phykeyiv)) {
+ err = dma_mapping_error(mc->dev, phykeyiv);
+ if (err) {
dev_err(mc->dev, "Cannot DMA MAP KEY IV\n");
- return -EFAULT;
+ goto theend;
}

tloffset = 0;
@@ -245,7 +247,6 @@ static int meson_cipher(struct skcipher_request *areq)
if (areq->iv && ivsize > 0) {
if (rctx->op_dir == MESON_DECRYPT) {
memcpy(areq->iv, backup_iv, ivsize);
- kzfree(backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst,
areq->cryptlen - ivsize,
@@ -254,6 +255,7 @@ static int meson_cipher(struct skcipher_request *areq)
}
theend:
kzfree(bkeyiv);
+ kzfree(backup_iv);

return err;
}
--
2.23.0
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