Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports

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To: Maciej Wieczor-Retman <maciej.wieczor-retman@xxxxxxxxx>
Subject: Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
From: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Date: Tue, 9 Sep 2025 16:46:15 +0200
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In-reply-to: <47ip2q7fc3q2igjjjg24bl3gwlpcr5y37pahkqb63ridzj262u@augjvsnpq4kz>
References: <cover.1756151769.git.maciej.wieczor-retman@intel.com> <36c0e5e9d875addc42a73168b8090144c327ec9f.1756151769.git.maciej.wieczor-retman@intel.com> <CA+fCnZcMV0BOJyvx2nciCK2jvht-Hx0HnFtRzcc=zu+pQSOdVw@mail.gmail.com> <couuy2aawztipvnlmaloadkbceewcekur5qbtzktr7ovneduvf@l47rxycy65aa> <hw7xa2ooqeyjo5ypc5jluuyjlgyzimxtylj5sh6igyffsxtyaf@qajqp37h6v2n> <epbqhjyfdt3daudp2wx54jsw6d7jf6ifbr3yknlfuqptz7b4uq@73n5k6b2jrrl> <CA+fCnZdJckDC4AKYxLS1MLBXir4wWqNddrD0o+mY4MXt0CYhcQ@mail.gmail.com> <ra5s3u5ha6mveijzwkoe2437ged5k5kacs5nqvkf4o7c2lcfzd@fishogqlatjb> <47ip2q7fc3q2igjjjg24bl3gwlpcr5y37pahkqb63ridzj262u@augjvsnpq4kz>

On Tue, Sep 9, 2025 at 10:54 AM Maciej Wieczor-Retman
<maciej.wieczor-retman@xxxxxxxxx> wrote:
>
> But as Peter Zijlstra noticed, x86 already uses the #UD instruction similarly to
> BRK on arm64. So I think I'll use this one here, and then change INT3 to UD in
> the LLVM patch.

Sound good, thanks!

References:
- [PATCH v5 00/19] kasan: x86: arm64: KASAN tag-based mode for x86
  - From: Maciej Wieczor-Retman
- [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Andrey Konovalov
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Andrey Konovalov
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman
- Re: [PATCH v5 13/19] kasan: x86: Handle int3 for inline KASAN reports
  - From: Maciej Wieczor-Retman

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