From: Eddie James <eajames@linux.ibm.com>
To: sam@mendozajonas.com
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, gwshan@linux.vnet.ibm.com, joel@jms.id.au,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Eddie James <eajames@linux.ibm.com>
Subject: [PATCH v2] net/ncsi: Disable the ncsi work before freeing the associated structure
Date: Wed, 25 Sep 2024 10:55:23 -0500 [thread overview]
Message-ID: <20240925155523.1017097-1-eajames@linux.ibm.com> (raw)
The work function can run after the ncsi device is freed, resulting
in use-after-free bugs or kernel panic.
Fixes: 2d283bdd079c ("net/ncsi: Resource management")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
Changes since v1:
- Use disable_work_sync instead of cancel_work_sync
net/ncsi/ncsi-manage.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 5ecf611c8820..5cf55bde366d 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -1954,6 +1954,8 @@ void ncsi_unregister_dev(struct ncsi_dev *nd)
list_del_rcu(&ndp->node);
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
+ disable_work_sync(&ndp->work);
+
kfree(ndp);
}
EXPORT_SYMBOL_GPL(ncsi_unregister_dev);
--
2.43.0
next reply other threads:[~2024-09-25 15:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-25 15:55 Eddie James [this message]
2024-10-03 8:20 ` [PATCH v2] net/ncsi: Disable the ncsi work before freeing the associated structure patchwork-bot+netdevbpf
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=20240925155523.1017097-1-eajames@linux.ibm.com \
--to=eajames@linux.ibm.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=gwshan@linux.vnet.ibm.com \
--cc=joel@jms.id.au \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sam@mendozajonas.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