From: Alexander Aring <alex.aring@gmail.com>
To: Dongliang Mu <mudongliangabcd@gmail.com>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
linux-wpan - ML <linux-wpan@vger.kernel.org>,
kernel list <linux-kernel@vger.kernel.org>,
"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
syzbot+b80c9959009a9325cdff@syzkaller.appspotmail.com
Subject: Re: [PATCH v2] ieee802154: hwsim: Fix memory leak in hwsim_add_one
Date: Tue, 22 Jun 2021 14:29:45 -0400 [thread overview]
Message-ID: <CAB_54W51MxDwN5oPxBqioaNhq-eB1QfXNMyUpmNZOWNDM3MmnA@mail.gmail.com> (raw)
In-Reply-To: <20210616020901.2759466-1-mudongliangabcd@gmail.com>
Hi,
On Tue, 15 Jun 2021 at 22:09, Dongliang Mu <mudongliangabcd@gmail.com> wrote:
>
> No matter from hwsim_remove or hwsim_del_radio_nl, hwsim_del fails to
> remove the entry in the edges list. Take the example below, phy0, phy1
> and e0 will be deleted, resulting in e1 not freed and accessed in the
> future.
>
> hwsim_phys
> |
> ------------------------------
> | |
> phy0 (edges) phy1 (edges)
> ----> e1 (idx = 1) ----> e0 (idx = 0)
>
> Fix this by deleting and freeing all the entries in the edges list
> between hwsim_edge_unsubscribe_me and list_del(&phy->list).
>
> Reported-by: syzbot+b80c9959009a9325cdff@syzkaller.appspotmail.com
> Fixes: 1c9f4a3fce77 ("ieee802154: hwsim: fix rcu handling")
> Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Thanks!
next prev parent reply other threads:[~2021-06-22 18:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 2:09 [PATCH v2] ieee802154: hwsim: Fix memory leak in hwsim_add_one Dongliang Mu
2021-06-22 18:29 ` Alexander Aring [this message]
2021-06-22 19:21 ` 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=CAB_54W51MxDwN5oPxBqioaNhq-eB1QfXNMyUpmNZOWNDM3MmnA@mail.gmail.com \
--to=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=mudongliangabcd@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=stefan@datenfreihafen.org \
--cc=syzbot+b80c9959009a9325cdff@syzkaller.appspotmail.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).