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crypto: msm: Fix null pointer dereference

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Fixing possible null pointer dereference of sg_src
when nbytes exceed.

Change-Id: I91a2a274f11646bc65c4eb0d14a82d4ed81f4e42
Signed-off-by: Tanwee Kausar <tkausar@codeaurora.org>
This commit is contained in:
Tanwee Kausar 2020-07-15 12:37:14 -07:00
commit d6ccbf749e
1 changed files with 1 additions and 4 deletions
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5
drivers/crypto/msm/qce50.c
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@ -2435,10 +2435,7 @@ static int _qce_sps_add_sg_data(struct qce_device *pce_dev,
struct sps_iovec *iovec = sps_bam_pipe->iovec +
sps_bam_pipe->iovec_count;
if (!sg_src)
return -ENOENT;
while (nbytes > 0) {
while (nbytes > 0 && sg_src) {
len = min(nbytes, sg_dma_len(sg_src));
nbytes -= len;
addr = sg_dma_address(sg_src);