On 20/12/15 22:52, kbuild test robot wrote:
Hi Daniel,
[auto build test ERROR on v4.4-rc5] [also build test ERROR on next-20151218] [cannot apply to tip/irq/core]
url: https://github.com/0day-ci/linux/commits/Daniel-Thompson/irq-arm-Use-FIQ-for... config: arm-socfpga_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/ma... -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm
All error/warnings (new ones prefixed by >>):
In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/linux/list.h:4, from include/linux/module.h:9, from arch/arm/kernel/smp.c:10: arch/arm/kernel/smp.c: In function 'raise_nmi':include/linux/compiler.h:484:38: error: call to '__compiletime_assert_766' declared with attribute error: BUILD_BUG_ON failed: SMP_IPI_FIQ_MASK != BIT(IPI_CPU_BACKTRACE)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:467:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^ include/linux/compiler.h:484:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/bug.h:50:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ include/linux/bug.h:74:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^arch/arm/kernel/smp.c:766:2: note: in expansion of macro 'BUILD_BUG_ON'
BUILD_BUG_ON(SMP_IPI_FIQ_MASK != BIT(IPI_CPU_BACKTRACE));
This should be a false alarm or at least, the BUILD_BUG_ON() is doing exactly what it was intended to.
I forgot to mention it in the covering letter (and will fix next time) but my patchset requires a fix from Marc Zyngier which changes the numeric value of IPI_CPU_BACKTRACE[1].
Daniel.
1: http://thread.gmane.org/gmane.linux.ports.arm.kernel/464985