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authorDan Carpenter <dan.carpenter@oracle.com>2020-06-05 14:03:39 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2020-06-15 10:38:54 +0300
commit1f5b07f5dd1748a6f9363fb1a76d599c74af8231 (patch)
treef8e323054ce83d071e26fd4192280a38fb0eb43a /drivers/crypto/marvell
parent77251e41f89a813b4090f5199442f217bbf11297 (diff)
downloadlinux-1f5b07f5dd1748a6f9363fb1a76d599c74af8231.tar.xz
crypto: marvell/octeontx - Fix a potential NULL dereference
Smatch reports that: drivers/crypto/marvell/octeontx/otx_cptvf_algs.c:132 otx_cpt_aead_callback() warn: variable dereferenced before check 'cpt_info' (see line 121) This function is called from process_pending_queue() as: drivers/crypto/marvell/octeontx/otx_cptvf_reqmgr.c 599 /* 600 * Call callback after current pending entry has been 601 * processed, we don't do it if the callback pointer is 602 * invalid. 603 */ 604 if (callback) 605 callback(res_code, areq, cpt_info); It does appear to me that "cpt_info" can be NULL so this could lead to a NULL dereference. Fixes: 10b4f09491bf ("crypto: marvell - add the Virtual Function driver for CPT") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/marvell')
-rw-r--r--drivers/crypto/marvell/octeontx/otx_cptvf_algs.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c b/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c
index 60e744f680d3..1e0a1d70ebd3 100644
--- a/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c
+++ b/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c
@@ -118,6 +118,9 @@ static void otx_cpt_aead_callback(int status, void *arg1, void *arg2)
struct otx_cpt_req_info *cpt_req;
struct pci_dev *pdev;
+ if (!cpt_info)
+ goto complete;
+
cpt_req = cpt_info->req;
if (!status) {
/*
@@ -129,10 +132,10 @@ static void otx_cpt_aead_callback(int status, void *arg1, void *arg2)
!cpt_req->is_enc)
status = validate_hmac_cipher_null(cpt_req);
}
- if (cpt_info) {
- pdev = cpt_info->pdev;
- do_request_cleanup(pdev, cpt_info);
- }
+ pdev = cpt_info->pdev;
+ do_request_cleanup(pdev, cpt_info);
+
+complete:
if (areq)
areq->complete(areq, status);
}