From: Dongliang Mu <mudongliangabcd@gmail.com>
To: alex.aring@gmail.com, stefan@datenfreihafen.org,
davem@davemloft.net, kuba@kernel.org
Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Dongliang Mu <mudongliangabcd@gmail.com>
Subject: [PATCH] ieee802154: hwsim: Fix possible memory leak in hwsim_subscribe_all_others
Date: Fri, 11 Jun 2021 09:58:12 +0800 [thread overview]
Message-ID: <20210611015812.1626999-1-mudongliangabcd@gmail.com> (raw)
In hwsim_subscribe_all_others, the error handling code performs
incorrectly if the second hwsim_alloc_edge fails. When this issue occurs,
it goes to sub_fail, without cleaning the edges allocated before.
Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
---
drivers/net/ieee802154/mac802154_hwsim.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index da9135231c07..366eaae3550a 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -715,6 +715,8 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy)
return 0;
+sub_fail:
+ hwsim_edge_unsubscribe_me(phy);
me_fail:
rcu_read_lock();
list_for_each_entry_rcu(e, &phy->edges, list) {
@@ -722,8 +724,6 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy)
hwsim_free_edge(e);
}
rcu_read_unlock();
-sub_fail:
- hwsim_edge_unsubscribe_me(phy);
return -ENOMEM;
}
--
2.25.1
next reply other threads:[~2021-06-11 1:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 1:58 Dongliang Mu [this message]
2021-06-12 12:38 ` [PATCH] ieee802154: hwsim: Fix possible memory leak in hwsim_subscribe_all_others Alexander Aring
2021-06-12 12:49 ` Alexander Aring
2021-06-14 11:06 ` Stefan Schmidt
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=20210611015812.1626999-1-mudongliangabcd@gmail.com \
--to=mudongliangabcd@gmail.com \
--cc=alex.aring@gmail.com \
--cc=davem@davemloft.net \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wpan@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=stefan@datenfreihafen.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.