The sg_nents_for_len() function could fail, this patch add a check for
its return value.
Signed-off-by: LABBE Corentin <clabbe.montj...@gmail.com>
---
drivers/crypto/amcc/crypto4xx_core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/crypto/amcc/crypto4xx_core.c
b/drivers/crypto/amcc/crypto4xx_core.c
index 27288fc..e6f7757 100644
--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -781,6 +781,10 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req,
/* figure how many gd is needed */
num_gd = sg_nents_for_len(src, datalen);
+ if ((int)num_gd < 0) {
+ dev_err(dev->core_dev->device, "Invalid number of src SG.\n");
+ return -EINVAL;
+ }
if (num_gd == 1)
num_gd = 0;
--
2.4.10
--
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