From: Ammar Faizi <[email protected]>
To: Kalle Valo <[email protected]>
Cc: Ammar Faizi <[email protected]>,
Kalle Valo <[email protected]>,
Eric Dumazet <[email protected]>,
Jakub Kicinski <[email protected]>, Paolo Abeni <[email protected]>,
Dan Carpenter <[email protected]>,
Johannes Berg <[email protected]>,
Linux Wireless Mailing List <[email protected]>,
netdev Mailing List <[email protected]>,
Linux Kernel Mailing List <[email protected]>,
GNU/Weeb Mailing List <[email protected]>,
[email protected], [email protected],
kernel test robot <[email protected]>
Subject: [PATCH] wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()`
Date: Mon, 25 Jul 2022 03:26:18 +0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Commit 7a4836560a61 changes simple_write_to_buffer() with memdup_user()
but it forgets to change the value to be returned that came from
simple_write_to_buffer() call. It results in the following warning:
warning: variable 'rc' is uninitialized when used here [-Wuninitialized]
return rc;
^~
Remove rc variable and just return the passed in length if the
memdup_user() succeeds.
Cc: Dan Carpenter <[email protected]>
Reported-by: kernel test robot <[email protected]>
Fixes: 7a4836560a6198d245d5732e26f94898b12eb760 ("wifi: wil6210: debugfs: fix info leak in wil_write_file_wmi()")
Fixes: ff974e4083341383d3dd4079e52ed30f57f376f0 ("wil6210: debugfs interface to send raw WMI command")
Signed-off-by: Ammar Faizi <[email protected]>
---
drivers/net/wireless/ath/wil6210/debugfs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index fe84362718de..04d1aa0e2d35 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -1010,7 +1010,7 @@ static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
void *cmd;
int cmdlen = len - sizeof(struct wmi_cmd_hdr);
u16 cmdid;
- int rc, rc1;
+ int rc1;
if (cmdlen < 0 || *ppos != 0)
return -EINVAL;
@@ -1027,7 +1027,7 @@ static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
wil_info(wil, "0x%04x[%d] -> %d\n", cmdid, cmdlen, rc1);
- return rc;
+ return len;
}
static const struct file_operations fops_wmi = {
base-commit: 086f67ba21ede199307e78476353bda9ffef982c
--
Ammar Faizi
next prev parent reply other threads:[~2022-07-24 20:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-24 19:44 [ammarfaizi2-block:kvalo/ath/pending 3/9] drivers/net/wireless/ath/wil6210/debugfs.c:1030:9: warning: variable 'rc' is uninitialized when used here kernel test robot
2022-07-24 20:26 ` Ammar Faizi [this message]
2022-07-25 6:34 ` [PATCH] wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()` Dan Carpenter
2022-07-27 10:20 ` Kalle Valo
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 \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/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