tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-4.11 head: 7398359c52bfc0e6188552bc391c717910db1a22 commit: a76bbabc83c87148e249810efba03a1b7a5952d3 [538/546] x86: ascii armor the x86_64 boot init stack canary config: x86_64-randconfig-x010-201726 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout a76bbabc83c87148e249810efba03a1b7a5952d3 # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): In file included from include/linux/stackprotector.h:9:0, from arch/x86/kernel/process.c:22: arch/x86/include/asm/stackprotector.h: In function 'boot_init_stack_canary': >> arch/x86/include/asm/stackprotector.h:77:12: error: 'CANARY_MASK' undeclared (first use in this function) canary &= CANARY_MASK; ^~~~~~~~~~~ arch/x86/include/asm/stackprotector.h:77:12: note: each undeclared identifier is reported only once for each function it appears in vim +/CANARY_MASK +77 arch/x86/include/asm/stackprotector.h 71 * there it already has some randomness on most systems. Later 72 * on during the bootup the random pool has true entropy too. 73 */ 74 get_random_bytes(&canary, sizeof(canary)); 75 tsc = rdtsc(); 76 canary += tsc + (tsc << 32UL); > 77 canary &= CANARY_MASK; 78 79 current->stack_canary = canary; 80 #ifdef CONFIG_X86_64 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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