On Thu, Aug 17, 2017 at 06:33:35PM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git > locking/core > head: 52fa5bc5cbba089f09bc2c372e3432f3f3e48051 > commit: 7a46ec0e2f4850407de5e1d19a44edee6efa58ec [36/40] locking/refcounts, > x86/asm: Implement fast refcount overflow protection > config: i386-tinyconfig (attached as .config) > compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 > reproduce: > git checkout 7a46ec0e2f4850407de5e1d19a44edee6efa58ec > # save the attached .config to linux build tree > make ARCH=i386 > > All error/warnings (new ones prefixed by >>): > > In file included from include/linux/refcount.h:57:0, > from include/linux/kref.h:19, > from include/linux/kobject.h:24, > from include/linux/irqdesc.h:5, > from include/linux/irq.h:495, > from arch/x86/include/asm/hardirq.h:5, > from include/linux/hardirq.h:8, > from arch/x86/kernel/asm-offsets.c:11: > arch/x86/include/asm/refcount.h: In function 'refcount_add': > >> arch/x86/include/asm/refcount.h:21:2: error: expected ':' or ')' before > >> 'ASM_UNREACHABLE'
This needs the ASM_UNREACHABLE macro from the tip/x86/asm branch. -- Josh
