From: Greg KH <gregkh@linuxfoundation.org>
To: Kassey Li <quic_yingangl@quicinc.com>
Cc: gregkh@google.com, cmllamas@google.com, surenb@google.com,
arve@android.com, joel@joelfernandes.org, brauner@kernel.org,
tkjos@android.com, maco@android.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] binder: add mutex_lock for mmap and NULL when free
Date: Sat, 7 Oct 2023 08:44:27 +0200 [thread overview]
Message-ID: <2023100715-blade-valiant-714d@gregkh> (raw)
In-Reply-To: <20231007034046.2352124-1-quic_yingangl@quicinc.com>
On Sat, Oct 07, 2023 at 11:40:46AM +0800, Kassey Li wrote:
> Enforce alloc->mutex in binder_alloc_mmap_handler when add
> the entry to list.
>
> Assign the freed pages/page_ptr to NULL to catch possible
> use after free with NULL pointer access.
>
> Signed-off-by: Kassey Li <quic_yingangl@quicinc.com>
> ---
> drivers/android/binder_alloc.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
What commit id does this fix?
thanks,
greg k-h
next prev parent reply other threads:[~2023-10-07 6:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-07 3:40 [PATCH] binder: add mutex_lock for mmap and NULL when free Kassey Li
2023-10-07 6:44 ` Greg KH [this message]
2023-10-07 11:07 ` Kassey Li
2023-10-07 11:18 ` Greg KH
2023-10-07 11:34 ` Kassey Li
2023-10-07 11:37 ` Greg KH
2023-10-07 11:43 ` Kassey Li
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=2023100715-blade-valiant-714d@gregkh \
--to=gregkh@linuxfoundation.org \
--cc=arve@android.com \
--cc=brauner@kernel.org \
--cc=cmllamas@google.com \
--cc=gregkh@google.com \
--cc=joel@joelfernandes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maco@android.com \
--cc=quic_yingangl@quicinc.com \
--cc=surenb@google.com \
--cc=tkjos@android.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 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.