Messages in this thread | | | Date | Fri, 15 Nov 2019 08:08:42 +0100 | From | Marco Felsch <> | Subject | Re: [PATCH v6 0/6] KASan for arm |
| |
Hi Florian,
On 19-11-14 15:01, Florian Fainelli wrote: > 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
Thanks for that hint, I will try this series too :) I read that you wanna prepare a v7 but didn't found it ^^
> 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:
Of course I will push it to github and inform you shortly.
> 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
My config is:
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 is not set
> are you using something different by any chance?
Unfortunately not.
Regards, Marco
> -- > Florian >
-- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
| |