Hi Catalin, Can you pick up Andrey's patch below for v4.4, until we have a better solution? I stumbled across this myself and was about to post a similar patch. FWIW: Acked-by: Mark Rutland <mark.rutland@xxxxxxx> Thanks, Mark. On Tue, Nov 17, 2015 at 06:47:08PM +0300, Andrey Ryabinin wrote: > We should either add proper Kconfig dependency for now, or just make it work. > > > From: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> > Subject: [PATCH] arm64: KASAN depends on !(ARM64_16K_PAGES && ARM64_VA_BITS_48) > > On KASAN + 16K_PAGES + 48BIT_VA > arch/arm64/mm/kasan_init.c: In function ‘kasan_early_init’: > include/linux/compiler.h:484:38: error: call to ‘__compiletime_assert_95’ declared with attribute error: BUILD_BUG_ON failed: !IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE) > _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) > > Currently KASAN will not work on 16K_PAGES and 48BIT_VA, so > forbid such configuration to avoid above build failure. > > Reported-by: Suzuki K. Poulose <Suzuki.Poulose@xxxxxxx> > Signed-off-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> > --- > arch/arm64/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 9ac16a4..bf7de69 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -49,7 +49,7 @@ config ARM64 > select HAVE_ARCH_AUDITSYSCALL > select HAVE_ARCH_BITREVERSE > select HAVE_ARCH_JUMP_LABEL > - select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP > + select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48) > select HAVE_ARCH_KGDB > select HAVE_ARCH_SECCOMP_FILTER > select HAVE_ARCH_TRACEHOOK > -- > 2.4.10 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>