Re: Patch "khugepaged: khugepaged_test_exit() check mmget_still_valid()" has been added to the 5.8-stable tree

Greg KH
2020-08-19T13:52:49Z

On Wed, Aug 19, 2020 at 06:32:26AM -0700, Hugh Dickins wrote:
> On Wed, 19 Aug 2020, gregkh@linuxfoundation.org wrote:
> >
> > This is a note to let you know that I've just added the patch titled
> >
> > khugepaged: khugepaged_test_exit() check mmget_still_valid()
> >
> > to the 5.8-stable tree which can be found at:
> > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> >
> > The filename of the patch is:
> > khugepaged-khugepaged_test_exit-check-mmget_still_valid.patch
> > and it can be found in the queue-5.8 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.
>
> Please hold this one back for the moment: we shall want it, but syzbot
> detected one place where it can lead to a VM_BUG_ON_MM(). The fix to
> that is currently in Andrew's tree, but not yet in Linus's - when it
> gets there, I'll send you its git commit id in reply to this mail.
>
> This patch failed to apply to earlier releases: I'll send the fixup for
> those at that time. (Fixups for another patch to follow later today.)

Now dropped, thanks!

greg k-h