On Tue, Jun 25, 2024 at 08:55:44AM +1000, NeilBrown wrote:
On Mon, 24 Jun 2024, stable@vger.kernel.org wrote:
This is a note to let you know that I've just added the patch titled
nfsd: fix oops when reading pool_stats before server is startedto the 6.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: nfsd-fix-oops-when-reading-pool_stats-before-server-.patch and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
I feel this should not be added to the stable tree.
It moves at test on a field protected by a mutex outside of the protection of that mutex, and so is obviously racey.
Depending on how the race goes, si->serv might be NULL when dereferenced in svc_pool_stats_start(), or svc_pool_stats_stop() might unlock a mutex that hadn't been locked.
I'll post a revert and a better fix for mainline.
Now dropped, thanks!
greg k-h