On Wed, Jun 16, 2021 at 05:28:54PM +0800, Liu Shixin wrote: > On 2021/6/16 15:11, Suren Baghdasaryan wrote: > > On Tue, Jun 15, 2021 at 11:52 PM Greg Kroah-Hartman > > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >> 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@xxxxxxxxxx/> > >>> > >>> https://lore.kernel.org/linux-mm/20210401181741.168763-1-surenb@xxxxxxxxxx/ > >>> > >>> 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? > > That is my understanding after discussions with Andrea but I did not > > verify that myself. As Greg pointed out, the best way would be to try > > it out. > > Thanks, > > Suren. > > > >> As the code is all there for you, can you just test them and see for > >> yourself? > >> > >> thanks, > >> > >> greg k-h > > . > > > Thank you both for replies. I have tested it in stable 4.19 kernel and the bug is existed as expected. Great, can you provide a working backport of the patches needed to solve this for 4.19 so that we can apply them? thanks, greg k-h
