From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: balbi@kernel.org, gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] usb: gadget: legacy: fix error return code of multi_bind()
Date: Sun, 7 Mar 2021 00:45:45 -0800 [thread overview]
Message-ID: <20210307084545.21775-1-baijiaju1990@gmail.com> (raw)
When usb_otg_descriptor_alloc() returns NULL to usb_desc, no error
return code of multi_bind() is assigned.
To fix this bug, status is assigned with -ENOMEM in this case.
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/usb/gadget/legacy/multi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/legacy/multi.c b/drivers/usb/gadget/legacy/multi.c
index ec9749845660..7734bf77b309 100644
--- a/drivers/usb/gadget/legacy/multi.c
+++ b/drivers/usb/gadget/legacy/multi.c
@@ -399,8 +399,10 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
struct usb_descriptor_header *usb_desc;
usb_desc = usb_otg_descriptor_alloc(gadget);
- if (!usb_desc)
+ if (!usb_desc) {
+ status = -ENOMEM;
goto fail_string_ids;
+ }
usb_otg_descriptor_init(gadget, usb_desc);
otg_desc[0] = usb_desc;
otg_desc[1] = NULL;
--
2.17.1
reply other threads:[~2021-03-07 8:47 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=20210307084545.21775-1-baijiaju1990@gmail.com \
--to=baijiaju1990@gmail.com \
--cc=balbi@kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.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).