From: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
To: vinicius.gomes@intel.com, davem@davemloft.net
Cc: jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Subject: [PATCH] net: sched: sch_taprio: fix memleak in error path for sched list parse
Date: Tue, 6 Aug 2019 13:04:25 +0300 [thread overview]
Message-ID: <20190806100425.4356-1-ivan.khoronzhuk@linaro.org> (raw)
In case off error, all entries should be freed from the sched list
before deleting it. For simplicity use rcu way.
Fixes: 5a781ccbd19e46 ("tc: Add support for configuring the taprio scheduler")
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
---
Based on net/master
net/sched/sch_taprio.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index b55a82c1e1bc..4f6333035841 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -1451,7 +1451,8 @@ static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
spin_unlock_bh(qdisc_lock(sch));
free_sched:
- kfree(new_admin);
+ if (new_admin)
+ call_rcu(&new_admin->rcu, taprio_free_sched_cb);
return err;
}
--
2.17.1
next reply other threads:[~2019-08-06 10:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-06 10:04 Ivan Khoronzhuk [this message]
2019-08-06 16:21 ` [PATCH] net: sched: sch_taprio: fix memleak in error path for sched list parse Vinicius Costa Gomes
2019-08-06 18:41 ` David Miller
2019-08-06 22:42 ` Ivan Khoronzhuk
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=20190806100425.4356-1-ivan.khoronzhuk@linaro.org \
--to=ivan.khoronzhuk@linaro.org \
--cc=davem@davemloft.net \
--cc=jhs@mojatatu.com \
--cc=jiri@resnulli.us \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=vinicius.gomes@intel.com \
--cc=xiyou.wangcong@gmail.com \
/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).