On Thu, May 15, 2025 at 11:31:09AM -0700, Eduard Zingerman wrote:
> On Thu, 2025-05-15 at 08:47 -0700, Kees Cook wrote:
> > On Thu, May 15, 2025 at 09:12:25PM +0800, Shung-Hsi Yu wrote:
> > > Bisect was done by Pawan and got to commit a0309faf1cb0 "mm: vmalloc:
> > > support more granular vrealloc() sizing"[2]. To further zoom in the
> >
> > Can you try this patch? It's a clear bug fix, but if it doesn't improve
> > things, I have another idea to rearrange the memset.
>
> I tried this patch on top of the commit 82f2b0b97b36 ("Linux 6.15-rc6").
> W/o the patch I observe the slowdown, test times out after 120 seconds,
> with the patch test finishes in 3 seconds.
Well that's pretty definitive! Thank you! I'll send out a properly
formatted patch. May I add your Tested-by?
--
Kees Cook
