Hi Dmitry, [auto build test ERROR on linus/master] [also build test ERROR on v4.10-rc3 next-20170111] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Dmitry-Safonov/Fix-compatible-mmap-return-pointer-over-4Gb/20170112-185732 config: x86_64-randconfig-x016-201702 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): arch/x86/kernel/sys_x86_64.c: In function 'find_start_end': >> arch/x86/kernel/sys_x86_64.c:122:13: error: 'mmap_rnd_compat_bits' >> undeclared (first use in this function) 1UL << mmap_rnd_compat_bits); ^~~~~~~~~~~~~~~~~~~~ arch/x86/kernel/sys_x86_64.c:122:13: note: each undeclared identifier is reported only once for each function it appears in arch/x86/kernel/sys_x86_64.c: In function 'arch_get_unmapped_area_topdown': arch/x86/kernel/sys_x86_64.c:202:31: error: 'mmap_rnd_compat_bits' undeclared (first use in this function) unsigned long rnd = 1UL << mmap_rnd_compat_bits; ^~~~~~~~~~~~~~~~~~~~ vim +/mmap_rnd_compat_bits +122 arch/x86/kernel/sys_x86_64.c 116 *end = 0x80000000; 117 return; 118 } 119 if (current->thread.status & TS_COMPAT) { 120 if (current->flags & PF_RANDOMIZE) 121 *begin = randomize_page(*begin, > 122 1UL << mmap_rnd_compat_bits); 123 *end = IA32_PAGE_OFFSET; 124 return; 125 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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