Hi Andrew, After merging the akpm-current tree, today's linux-next build (x86-64 allmodconfig) failed like this: scripts/Makefile.kasan:21: CONFIG_KASAN: compiler does not support all options. Trying minimal configuration scripts/Makefile.kasan:21: CONFIG_KASAN: compiler does not support all options. Trying minimal configuration x86_64-linux-gcc: warning: unrecognized argument to -fsanitize= option: 'kernel-address' lots and lots of this last message ... Caused by the commits that added the kernel address sanitizer. gcc version 4.9.0 cross compiling from Powerpc64. I have added the following patch for today (after which I only got one of the "compiler does not support all options" messages). From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Date: Wed, 4 Feb 2015 18:43:52 +1100 Subject: [PATCH] disable CONFIG_KASAN for now Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> --- lib/Kconfig.kasan | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 4fecaedc80a2..4301bb56e3ce 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -1,7 +1,7 @@ config HAVE_ARCH_KASAN bool -if HAVE_ARCH_KASAN +if HAVE_ARCH_KASAN && BROKEN config KASAN bool "KASan: runtime memory debugger" -- 2.1.4 -- Cheers, Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
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