From: longli@linuxonhyperv.com
To: Ferruh Yigit <ferruh.yigit@amd.com>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Cc: dev@dpdk.org, stable.dpdk.org@linux.microsoft.com,
Stephen Hemminger <stephen@networkplumber.org>,
Long Li <longli@microsoft.com>
Subject: [PATCH] net/netvsc: fix bogus sizeof calculation
Date: Wed, 28 Jun 2023 17:29:57 -0700 [thread overview]
Message-ID: <1687998597-11972-1-git-send-email-longli@linuxonhyperv.com> (raw)
From: Stephen Hemminger <stephen@networkplumber.org>
Found by cppcheck.
drivers/net/netvsc/hn_rndis.c:332:21: warning: Found calculation inside sizeof(). [sizeofCalculation] if (len < sizeof(3 * sizeof(uint32_t))) {
Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Long Li <longli@microsoft.com>
---
drivers/net/netvsc/hn_rndis.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/netvsc/hn_rndis.c b/drivers/net/netvsc/hn_rndis.c
index e6f1f28768..29c6009b2c 100644
--- a/drivers/net/netvsc/hn_rndis.c
+++ b/drivers/net/netvsc/hn_rndis.c
@@ -329,7 +329,8 @@ void hn_rndis_receive_response(struct hn_data *hv,
hn_rndis_dump(data);
- if (len < sizeof(3 * sizeof(uint32_t))) {
+ /* Check we can read first three data fields from RNDIS header */
+ if (len < 3 * sizeof(uint32_t)) {
PMD_DRV_LOG(ERR,
"missing RNDIS header %u", len);
return;
--
2.17.1
next reply other threads:[~2023-06-29 0:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-29 0:29 longli [this message]
2023-06-29 11:13 ` Ferruh Yigit
2023-06-29 15:51 ` Tyler Retzlaff
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1687998597-11972-1-git-send-email-longli@linuxonhyperv.com \
--to=longli@linuxonhyperv.com \
--cc=andrew.rybchenko@oktetlabs.ru \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@amd.com \
--cc=longli@microsoft.com \
--cc=stable.dpdk.org@linux.microsoft.com \
--cc=stephen@networkplumber.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).