From: Carlos Llamas <cmllamas@google.com>
To: Yeoreum Yun <yeoreum.yun@arm.com>
Cc: gregkh@linuxfoundation.org, arve@android.com, tkjos@android.com,
maco@android.com, joel@joelfernandes.org, brauner@kernel.org,
mllamas@google.com, surenb@google.com,
linux-kernel@vger.kernel.org, Yeoreum Yun <yeoreun.yun@arm.com>,
Yunseong Kim <ysk@kzalloc.com>
Subject: Re: [PATCH] driver/android/binderfs: fix race for binderfs' devices list
Date: Sat, 17 May 2025 17:24:27 +0000 [thread overview]
Message-ID: <aCjGSx2TvQdECBT9@google.com> (raw)
In-Reply-To: <20250513174719.3096063-1-yeoreum.yun@arm.com>
On Tue, May 13, 2025 at 06:47:19PM +0100, Yeoreum Yun wrote:
> binderfs' devices list is global list and can be accesed by multi-thread
> while unmount binder device.
> Since there is no proper locking, it can meet datarace problem.
> for example it's one of case reported UAF while binderfs_evict_inode()
> removes binder device:
>
> sudo ./stress-ng --binderfs 8 --binderfs-ops 10000 -t 15 \
> --pathological --timestamp --tz --syslog --perf --no-rand-seed \
> --times --metrics --klog-check --status 5 -x smi -v --interrupts --change-cpu
I just found this by chance (there is a typo on my email). Note this was
already fixed here:
https://lore.kernel.org/all/20250324132427.922495-1-dmantipov@yandex.ru/
Cheers,
Carlos Llamas
next prev parent reply other threads:[~2025-05-17 17:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-13 17:47 [PATCH] driver/android/binderfs: fix race for binderfs' devices list Yeoreum Yun
2025-05-17 17:24 ` Carlos Llamas [this message]
2025-05-19 8:15 ` Yeoreum Yun
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