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[1/3] crypto: spacc - Fix uninitialized variable in spacc_aead_process()

Message ID 74ca2a96-978d-4d22-a787-04ceaa08aff6@stanley.mountain (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series crypto: spacc - More Smatch fixes | expand

Commit Message

Dan Carpenter Aug. 15, 2024, 11:20 a.m. UTC 
Smatch complains that:

    drivers/crypto/dwc-spacc/spacc_aead.c:1031 spacc_aead_process()
    error: uninitialized symbol 'ptaadsize'.

This could happen if, for example, tctx->mode was CRYPTO_MODE_NULL and
req->cryptlen was less than icvremove.

Fixes: 06af76b46c78 ("crypto: spacc - Add SPAcc aead support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/crypto/dwc-spacc/spacc_aead.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
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Patch

diff --git a/drivers/crypto/dwc-spacc/spacc_aead.c b/drivers/crypto/dwc-spacc/spacc_aead.c
index 3468ff605957..50ef9053fc4d 100755
--- a/drivers/crypto/dwc-spacc/spacc_aead.c
+++ b/drivers/crypto/dwc-spacc/spacc_aead.c
@@ -823,7 +823,7 @@  static int spacc_aead_process(struct aead_request *req, u64 seq, int encrypt)
 	u32 dstoff;
 	int icvremove;
 	int ivaadsize;
-	int ptaadsize;
+	int ptaadsize = 0;
 	int iv_to_context;
 	int spacc_proc_len;
 	u32 spacc_icv_offset = 0;
@@ -974,8 +974,6 @@  static int spacc_aead_process(struct aead_request *req, u64 seq, int encrypt)
 	    tctx->mode == CRYPTO_MODE_NULL) {
 		if (req->cryptlen >= icvremove)
 			ptaadsize = req->cryptlen - icvremove;
-	} else {
-		ptaadsize = 0;
 	}
 
 	/* Calculate and set the below, important parameters