Re: Questions about backports of fixes for "CoW after fork() issue"

On Wed, Jun 16, 2021 at 02:47:15PM +0800, Liu Shixin wrote:

Hi, Suren,

I read the previous discussion about fixing CVE-2020-29374 in stable 4.14 and 4.19 in https://lore.kernel.org/linux-mm/20210401181741.168763-1-surenb@google.com/

https://lore.kernel.org/linux-mm/20210401181741.168763-1-surenb@google.com/

And the results of the discussion is that you backports of 17839856fd58 for 4.14 and

4.19 kernels.

But the bug about dax and strace in the discussion has not been solved, right? I don't

find a conclusion on this issue, am I missing something? Does this problem still exist in

the stable 4.14 and 4.19 kernel?

As the code is all there for you, can you just test them and see for yourself?

thanks,

greg k-h