Re: [PATCH v7 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8

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On Wed, 12 Jul 2023 at 01:14, Isaac Manjarres <isaacmanjarres@xxxxxxxxxx> wrote:
>
> On Sat, Jul 8, 2023 at 6:03 AM Amit Pundir <amit.pundir@xxxxxxxxxx> wrote:
> > Hi Issac, I can't reproduce this crash if I have slub_debug enabled
> > https://bugs.linaro.org/attachment.cgi?id=1149.
> >
> > But I can still reproduce the crash, with the same build, if I just
> > remove the slub_debug bootarg
> > https://bugs.linaro.org/attachment.cgi?id=1150
> >
>
> Hey Amit,
>
> Thanks for trying this out. John Stultz and I tried this out as well, and we
> couldn't reproduce the issue with slub_debug enabled either.
>
> However, we were able to reproduce the issue you reported along with
> KASAN enabled, which also helped us catch an out-of-bounds access
> in the regmap-irq code. Once we fixed it, the memory corruption you
> reported was also fixed. I've sent the patch [1] for review. Can you please
> test it out and see if it works for you too?

It does fix the v6.5-rc1 boot regression I reported above on
Dragonboard 845c running AOSP. Thank you.

Regards,
Amit Pundir

>
> [1]: https://lore.kernel.org/all/20230711193059.2480971-1-isaacmanjarres@xxxxxxxxxx/
>
> Thanks,
> Isaac





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