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From: Matjaz Matjaz <matyaz@yahoo.com>
To: Marco Felsch <m.felsch@pengutronix.de>,
	 Florian Fainelli <f.fainelli@gmail.com>
Cc: alexandre.belloni@bootlin.com, mhocko@suse.com,
	linux-doc@vger.kernel.org, catalin.marinas@arm.com,
	dhowells@redhat.com, yamada.masahiro@socionext.com,
	ryabinin.a.a@gmail.com, glider@google.com,
	kvmarm@lists.cs.columbia.edu, rob@landley.net, corbet@lwn.net,
	liuwenliang@huawei.com, daniel.lezcano@linaro.org,
	linux@armlinux.org.uk, kasan-dev@googlegroups.com,
	bcm-kernel-feedback-list@broadcom.com,
	linux-arm-kernel@lists.infradead.org, geert@linux-m68k.org,
	keescook@chromium.org, arnd@arndb.de, marc.zyngier@arm.com,
	andre.przywara@arm.com, philip@cog.systems, jinb.park7@gmail.com,
	tglx@linutronix.de, dvyukov@google.com, nico@fluxnic.net,
	gregkh@linuxfoundation.org, ard.biesheuvel@linaro.org,
	linux-kernel@vger.kernel.org, kernel@pengutronix.de,
	pombredanne@nexb.com, akpm@linux-foundation.org,
	thgarnie@google.com, kirill.shutemov@linux.intel.com
Subject: ***SPAM*** Re: [PATCH v6 0/6] KASan for arm
Date: Fri, 15 Nov 2019 02:13:37 +0000 (UTC)
Message-ID: <231794607.364474.1573784017752@mail.yahoo.com> (raw)
In-Reply-To: <7322163f-e08e-a6b7-b143-e9d59917ee5b@gmail.com>

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 [::1]:2869             hp-PC:53166    ios 2.1.2 I sign on it
    Dne petek, 15. november 2019 00:01:38 GMT+1 je uporabnik Florian Fainelli <f.fainelli@gmail.com> napisal:  
 
 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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        <div dir="ltr" data-setdir="false"><div><div>[::1]:2869&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;hp-PC:53166&nbsp; &nbsp;&nbsp;</div></div>ios 2.1.2 I sign on it</div><div><br></div>
        
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                <div>
                    Dne petek, 15. november 2019 00:01:38 GMT+1 je uporabnik Florian Fainelli &lt;f.fainelli@gmail.com&gt; napisal:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div dir="ltr">Hello Marco,<br></div><div dir="ltr"><br></div><div dir="ltr">On 11/14/19 10:12 AM, Marco Felsch wrote:<br></div><div dir="ltr">&gt; Hi Florian,<br></div><div dir="ltr">&gt; <br></div><div dir="ltr">&gt; first of all, many thanks for your work on this series =) I picked your<br></div><div dir="ltr">&gt; and Arnd patches to make it compilable. Now it's compiling but my imx6q<br></div><div dir="ltr">&gt; board didn't boot anymore. I debugged the code and found that the branch<br></div><div dir="ltr">&gt; to 'start_kernel' won't be reached<br></div><div dir="ltr">&gt; <br></div><div dir="ltr">&gt; 8&lt;------- arch/arm/kernel/head-common.S -------<br></div><div dir="ltr">&gt; ....<br></div><div dir="ltr">&gt; <br></div><div dir="ltr">&gt; #ifdef CONFIG_KASAN<br></div><div dir="ltr">&gt;&nbsp; &nbsp; &nbsp; &nbsp;  bl&nbsp; &nbsp; &nbsp; kasan_early_init<br></div><div dir="ltr">&gt; #endif<br></div><div dir="ltr">&gt; &nbsp;&nbsp;&nbsp; mov&nbsp; &nbsp;  lr, #0<br></div><div dir="ltr">&gt; &nbsp;&nbsp;&nbsp; b&nbsp; &nbsp; &nbsp;  start_kernel<br></div><div dir="ltr">&gt; ENDPROC(__mmap_switched)<br></div><div dir="ltr">&gt; <br></div><div dir="ltr">&gt; ....<br></div><div dir="ltr">&gt; 8&lt;----------------------------------------------<br></div><div dir="ltr">&gt; <br></div><div dir="ltr">&gt; Now, I found also that 'KASAN_SHADOW_OFFSET' isn't set due to missing<br></div><div dir="ltr">&gt; 'CONFIG_KASAN_SHADOW_OFFSET' and so no '-fasan-shadow-offset=xxxxx' is<br></div><div dir="ltr">&gt; added. Can that be the reason why my board isn't booted anymore?<br></div><div dir="ltr"><br></div><div dir="ltr">The latest that I have is here, though not yet submitted since I needed<br></div><div dir="ltr">to solve one issue on a specific platform with a lot of memory:<br></div><div dir="ltr"><br></div><div dir="ltr"><a href="https://github.com/ffainelli/linux/pull/new/kasan-v7" target="_blank">https://github.com/ffainelli/linux/pull/new/kasan-v7</a><br></div><div dir="ltr"><br></div><div dir="ltr">Can you share your branch as well? I did not pick all of Arnd's patches<br></div><div dir="ltr">since some appeared to be seemingly independent from KASan on ARM. This<br></div><div dir="ltr">is the KASAN related options that are set in my configuration:<br></div><div dir="ltr"><br></div><div dir="ltr">grep KASAN build/linux-custom/.config<br></div><div dir="ltr">CONFIG_HAVE_ARCH_KASAN=y<br></div><div dir="ltr">CONFIG_CC_HAS_KASAN_GENERIC=y<br></div><div dir="ltr">CONFIG_KASAN=y<br></div><div dir="ltr">CONFIG_KASAN_GENERIC=y<br></div><div dir="ltr">CONFIG_KASAN_OUTLINE=y<br></div><div dir="ltr"># CONFIG_KASAN_INLINE is not set<br></div><div dir="ltr">CONFIG_KASAN_STACK=1<br></div><div dir="ltr">CONFIG_TEST_KASAN=m<br></div><div dir="ltr"><br></div><div dir="ltr">are you using something different by any chance?<br></div><div dir="ltr">-- <br></div><div dir="ltr">Florian<br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">kvmarm mailing list<br></div><div dir="ltr"><a ymailto="mailto:kvmarm@lists.cs.columbia.edu" href="mailto:kvmarm@lists.cs.columbia.edu">kvmarm@lists.cs.columbia.edu</a><br></div><div dir="ltr"><a href="https://lists.cs.columbia.edu/mailman/listinfo/kvmarm" target="_blank">https://lists.cs.columbia.edu/mailman/listinfo/kvmarm</a><br></div></div>
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  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-17 22:11 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
2019-11-15  2:13     ` Matjaz Matjaz [this message]
2019-11-15  7:08     ` Marco Felsch
2019-11-15 11:44       ` Marco Felsch
2019-11-19  0:13         ` Florian Fainelli

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