Messages in this thread | | | Date | Wed, 26 Aug 2015 19:37:09 +0300 | Subject | Re: [PATCH V2 00/10] KASan ppc64 support | From | Andrey Ryabinin <> |
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2015-08-26 11:26 GMT+03:00 Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>: > Hi, > > This patchset implements kernel address sanitizer for ppc64. > Since ppc64 virtual address range is divided into different regions, > we can't have one contigous area for the kasan shadow range. Hence > we don't support the INLINE kasan instrumentation. With Outline > instrumentation, we override the shadow_to_mem and mem_to_shadow > callbacks, so that we map only the kernel linear range (ie, > region with ID 0xc). For region with ID 0xd and 0xf (vmalloc > and vmemmap ) we return the address of the zero page. This > works because kasan doesn't track both vmemmap and vmalloc address. > > Known issues: > * Kasan is not yet enabled for arch/powerpc/kvm > * kexec hang > * outline stack and global support >
Is there any problem with globals or you just didn't try it yet? I think it should just work. You need only to add --param asan-globals=0 to KBUILD_CFLAGS_MODULE to disable it for modules.
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