From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Juergen Gross <jgross@suse.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
"Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>,
stable@vger.kernel.org
Subject: Re: [PATCH] xen/events: avoid NULL pointer dereference in evtchn_from_irq()
Date: Thu, 19 Mar 2020 12:01:05 -0400 [thread overview]
Message-ID: <1f8aab2c-dddc-494c-708d-85087c8d4e57@oracle.com> (raw)
In-Reply-To: <20200319071428.12115-1-jgross@suse.com>
On 3/19/20 3:14 AM, Juergen Gross wrote:
> There have been reports of races in evtchn_from_irq() where the info
> pointer has been NULL.
Do you have an example of how this race happens (and how moving kfree to
rcu will help)?
(I am mostly wondering whether we'd be masking a more serious problem)
-boris
next prev parent reply other threads:[~2020-03-19 16:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 7:14 [PATCH] xen/events: avoid NULL pointer dereference in evtchn_from_irq() Juergen Gross
2020-03-19 16:01 ` Boris Ostrovsky [this message]
2020-05-21 17:22 ` Boris Ostrovsky
2020-05-21 18:46 ` Marek Marczykowski-Górecki
2020-05-21 21:57 ` Boris Ostrovsky
2020-05-22 8:18 ` Jürgen Groß
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=1f8aab2c-dddc-494c-708d-85087c8d4e57@oracle.com \
--to=boris.ostrovsky@oracle.com \
--cc=jgross@suse.com \
--cc=linux-kernel@vger.kernel.org \
--cc=marmarek@invisiblethingslab.com \
--cc=sstabellini@kernel.org \
--cc=stable@vger.kernel.org \
--cc=xen-devel@lists.xenproject.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