Andrey Ryabinin <ryabinin....@gmail.com> writes: > 2015-08-26 11:26 GMT+03:00 Aneesh Kumar K.V <aneesh.ku...@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.
I am hitting BUG_ON in early vmalloc code. I still haven't got time to debug it further. Should get to that soon. -aneesh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
