From: Ard Biesheuvel <ardb@kernel.org>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Abbott Liu <liuwenliang@huawei.com>,
Russell King <linux@armlinux.org.uk>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 0/5 v8] KASan for Arm
Date: Thu, 7 May 2020 19:29:13 +0200 [thread overview]
Message-ID: <CAMj1kXGT1WhX=A2q3yH=rOpBcTvXv1-mCujrt_5AAaoATwh9Sw@mail.gmail.com> (raw)
In-Reply-To: <20200507124522.171323-1-linus.walleij@linaro.org>
On Thu, 7 May 2020 at 14:47, Linus Walleij <linus.walleij@linaro.org> wrote:
>
> It's time to repost this, now that I got it into better shape.
>
> Main changes:
> - Restore the series number to v8 following my previous
> "v1" which was actually v7, following Florians versions.
> What was I thinking. :(
> - Doesn't crash randomly in QEMU etc. This was because
> mmu.c was instrumented, and when we were lucky this did
> not poke around in memory that crashed us.
> - Handle the undefined symbols better (like suggested by
> Ard)
> - Fix up documentation.
> - Better patch split in logical chunks.
>
> Remaining issues:
> - Does it work for you?
> - Crash on ARMv5/v5 in v4wbi_flush_user_tlb_range+0x10/0x4c.
> I wonder why. If you know, please tell me, I naturally
> have to fix this.
> - The code in kasan_init.c to first back up TTBR0 and then
> restore it looks *fragile* even if it is working. I think
> we need to do something better in a per-proc file such
> as is done in cpu_v7_switch_mm() and other well organized
> MMU manipulation, I certainly feel this should be done
> like that.
>
> Abbott Liu (1):
> ARM: Define the virtual space of KASan's shadow region
>
> Andrey Ryabinin (4):
> ARM: Disable KASan instrumentation for some code
> ARM: Replace string mem* functions for KASan
> ARM: Initialize the mapping of KASan shadow memory
> ARM: Enable KASan for ARM
>
For the series,
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Ard Biesheuvel <ardb@kernel.org> # QEMU/KVM/mach-virt/LPAE/8G
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prev parent reply other threads:[~2020-05-07 17:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-07 12:45 [PATCH 0/5 v8] KASan for Arm Linus Walleij
2020-05-07 12:45 ` [PATCH 1/5 v8] ARM: Disable KASan instrumentation for some code Linus Walleij
2020-05-07 12:45 ` [PATCH 2/5 v8] ARM: Replace string mem* functions for KASan Linus Walleij
2020-05-07 12:45 ` [PATCH 3/5 v8] ARM: Define the virtual space of KASan's shadow region Linus Walleij
2020-05-07 17:28 ` Ard Biesheuvel
2020-05-07 12:45 ` [PATCH 4/5 v8] ARM: Initialize the mapping of KASan shadow memory Linus Walleij
2020-05-07 12:45 ` [PATCH 5/5 v8] ARM: Enable KASan for ARM Linus Walleij
2020-05-07 17:29 ` Ard Biesheuvel [this message]
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