On Mon, Feb 1, 2021 at 9:58 AM Eric Dumazet <eduma...@google.com> wrote: > > On Mon, Feb 1, 2021 at 6:34 PM Marco Elver <el...@google.com> wrote: > > > > On Mon, 1 Feb 2021 at 17:50, Christoph Paasch > > > > just a few days ago we found out that this also fixes a syzkaller > > > issue on MPTCP > > > (https://github.com/multipath-tcp/mptcp_net-next/issues/136). > > > I confirmed that this patch fixes the issue for us as well: > > > > > > Tested-by: Christoph Paasch <christoph.paa...@gmail.com> > > > > That's interesting, because according to your config you did not have > > KFENCE enabled. Although it's hard to say what exactly caused the > > truesize mismatch in your case, because it clearly can't be KFENCE > > that caused ksize(kmalloc(S))!=ksize(kmalloc(S)) for you. > > Indeed, this seems strange. This might be a different issue. > > Maybe S != S ;)
Seems like letting syzkaller run for a few more days made it eventually find the WARN again. As if Marco's change makes it harder for us to trigger the issue. Anyways, you can remove my "Tested-by" ;-) Christoph
