Re: [PATCH v6 00/18] kasan: x86: arm64: KASAN tag-based mode for x86

[Maciej Wieczór-Retman]

Thanks for taking a look at the series!

On 2025-10-29 at 15:08:06 -0700, Andrew Morton wrote:
>On Wed, 29 Oct 2025 19:05:27 +0000 Maciej Wieczor-Retman <m.wieczorretman@xxxxx> wrote:
>
>> The patchset aims to add a KASAN tag-based mode for the x86 architecture
>> with the help of the new CPU feature called Linear Address Masking
>> (LAM). Main improvement introduced by the series is 2x lower memory
>> usage compared to KASAN's generic mode, the only currently available
>> mode on x86. The tag based mode may also find errors that the generic
>> mode couldn't because of differences in how these modes operate.
>
>Thanks.  Quite a lot of these patches aren't showing signs of review at
>this time, so I'll skip v6 for now.
>
>However patches 1&2 are fixes that have cc:stable.  It's best to
>separate these out from the overall add-a-feature series please - their
>path-to-mainline will be quite different.

Okay, I'll send them separately

>I grabbed just those two patches for some testing, however their
>changelogging isn't fully appropriate.  Can I ask that you resend these
>as a two-patch series after updating the changelogs to clearly describe
>the userspace-visible effects of the flaws which the patches fix?
>
>This is to help -stable maintainers understand why we're proposing the
>backports and it is to help people to predict whether these fixes might
>address an issue which they or their customers are experiencing.

Sure, I'll also fixup that undefined symbol error that you mentioned in
the second email.

kind regards
Maciej Wieczór-Retman