From: Florian Fainelli <f.fainelli@gmail•com>
To: Marco Felsch <m.felsch@pengutronix•de>
Cc: mark.rutland@arm•com, alexandre.belloni@bootlin•com,
mhocko@suse•com, julien.thierry@arm•com, catalin.marinas@arm•com,
christoffer.dall@arm•com, dhowells@redhat•com,
yamada.masahiro@socionext•com, ryabinin.a.a@gmail•com,
glider@google•com, kvmarm@lists•cs.columbia.edu, corbet@lwn•net,
liuwenliang@huawei•com, daniel.lezcano@linaro•org,
linux@armlinux•org.uk, kasan-dev@googlegroups•com,
geert@linux-m68k•org, dvyukov@google•com,
bcm-kernel-feedback-list@broadcom•com, drjones@redhat•com,
vladimir.murzin@arm•com, keescook@chromium•org, arnd@arndb•de,
marc.zyngier@arm•com, andre.przywara@arm•com,
pombredanne@nexb•com, jinb.park7@gmail•com, tglx@linutronix•de,
kernel@pengutronix•de, linux-arm-kernel@lists•infradead.org,
nico@fluxnic•net, gregkh@linuxfoundation•org,
ard.biesheuvel@linaro•org, linux-doc@vger•kernel.org,
linux-kernel@vger•kernel.org, rob@landley•net,
philip@cog•systems, akpm@linux-foundation•org,
thgarnie@google•com, kirill.shutemov@linux•intel.com
Subject: Re: [PATCH v6 0/6] KASan for arm
Date: Thu, 14 Nov 2019 15:01:19 -0800 [thread overview]
Message-ID: <7322163f-e08e-a6b7-b143-e9d59917ee5b@gmail.com> (raw)
In-Reply-To: <20191114181243.q37rxoo3seds6oxy@pengutronix.de>
Hello Marco,
On 11/14/19 10:12 AM, Marco Felsch wrote:
> Hi Florian,
>
> first of all, many thanks for your work on this series =) I picked your
> and Arnd patches to make it compilable. Now it's compiling but my imx6q
> board didn't boot anymore. I debugged the code and found that the branch
> to 'start_kernel' won't be reached
>
> 8<------- arch/arm/kernel/head-common.S -------
> ....
>
> #ifdef CONFIG_KASAN
> bl kasan_early_init
> #endif
> mov lr, #0
> b start_kernel
> ENDPROC(__mmap_switched)
>
> ....
> 8<----------------------------------------------
>
> Now, I found also that 'KASAN_SHADOW_OFFSET' isn't set due to missing
> 'CONFIG_KASAN_SHADOW_OFFSET' and so no '-fasan-shadow-offset=xxxxx' is
> added. Can that be the reason why my board isn't booted anymore?
The latest that I have is here, though not yet submitted since I needed
to solve one issue on a specific platform with a lot of memory:
https://github.com/ffainelli/linux/pull/new/kasan-v7
Can you share your branch as well? I did not pick all of Arnd's patches
since some appeared to be seemingly independent from KASan on ARM. This
is the KASAN related options that are set in my configuration:
grep KASAN build/linux-custom/.config
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_KASAN=y
CONFIG_KASAN_GENERIC=y
CONFIG_KASAN_OUTLINE=y
# CONFIG_KASAN_INLINE is not set
CONFIG_KASAN_STACK=1
CONFIG_TEST_KASAN=m
are you using something different by any chance?
--
Florian
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next prev parent reply other threads:[~2019-11-14 23:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-17 22:11 [PATCH v6 0/6] KASan for arm Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 1/6] ARM: Add TTBR operator for kasan_init Florian Fainelli
2019-07-02 21:03 ` Linus Walleij
2019-07-11 16:54 ` Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 2/6] ARM: Disable instrumentation for some code Florian Fainelli
2019-07-02 21:56 ` Linus Walleij
2019-07-11 16:53 ` Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 3/6] ARM: Replace memory function for kasan Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 4/6] ARM: Define the virtual space of KASan's shadow region Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 5/6] ARM: Initialize the mapping of KASan shadow memory Florian Fainelli
2019-06-17 22:11 ` [PATCH v6 6/6] ARM: Enable KASan for arm Florian Fainelli
2019-07-02 21:06 ` [PATCH v6 0/6] " Linus Walleij
2019-07-11 17:00 ` Florian Fainelli
2019-07-18 7:51 ` Arnd Bergmann
2019-10-07 21:34 ` Florian Fainelli
2019-10-07 22:10 ` Arnd Bergmann
2019-10-08 8:47 ` Linus Walleij
2019-11-14 18:12 ` Marco Felsch
2019-11-14 23:01 ` Florian Fainelli [this message]
2019-11-15 7:08 ` Marco Felsch
2019-11-15 11:44 ` Marco Felsch
2019-11-19 0:13 ` Florian Fainelli
2020-01-17 10:13 ` Linus Walleij
2020-01-17 19:55 ` Florian Fainelli
2020-01-17 21:05 ` Linus Walleij
2020-03-05 8:43 ` Linus Walleij
2020-03-05 9:43 ` Marco Felsch
2020-03-20 9:26 ` Linus Walleij
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