Hi Baoquan, [auto build test WARNING on tip/x86/core] [also build test WARNING on v4.9-rc8 next-20161208] [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/Baoquan-He/Determine-kernel-text-mapping-size-at-runtime-for-x86_64/20161208-172019 config: x86_64-randconfig-x014-201649 (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 warnings (new ones prefixed by >>): In file included from include/linux/linkage.h:4:0, from include/linux/preempt.h:9, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/bootmem.h:7, from arch/x86/mm/physaddr.c:1: arch/x86/mm/physaddr.c: In function '__phys_addr': arch/x86/include/asm/page_64_types.h:67:29: error: 'kernel_mapping_size' undeclared (first use in this function) #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ include/linux/compiler.h:168:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ include/linux/mmdebug.h:55:30: note: in expansion of macro 'BUG_ON' #define VIRTUAL_BUG_ON(cond) BUG_ON(cond) ^~~~~~ >> arch/x86/mm/physaddr.c:21:3: note: in expansion of macro 'VIRTUAL_BUG_ON' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~ arch/x86/mm/physaddr.c:21:23: note: in expansion of macro 'KERNEL_MAPPING_SIZE' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/page_64_types.h:67:29: note: each undeclared identifier is reported only once for each function it appears in #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ include/linux/compiler.h:168:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ include/linux/mmdebug.h:55:30: note: in expansion of macro 'BUG_ON' #define VIRTUAL_BUG_ON(cond) BUG_ON(cond) ^~~~~~ >> arch/x86/mm/physaddr.c:21:3: note: in expansion of macro 'VIRTUAL_BUG_ON' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~ arch/x86/mm/physaddr.c:21:23: note: in expansion of macro 'KERNEL_MAPPING_SIZE' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~~~~~~ arch/x86/mm/physaddr.c: In function '__phys_addr_symbol': arch/x86/include/asm/page_64_types.h:67:29: error: 'kernel_mapping_size' undeclared (first use in this function) #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ include/linux/compiler.h:168:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ include/linux/mmdebug.h:55:30: note: in expansion of macro 'BUG_ON' #define VIRTUAL_BUG_ON(cond) BUG_ON(cond) ^~~~~~ arch/x86/mm/physaddr.c:38:2: note: in expansion of macro 'VIRTUAL_BUG_ON' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~ arch/x86/mm/physaddr.c:38:22: note: in expansion of macro 'KERNEL_MAPPING_SIZE' VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); ^~~~~~~~~~~~~~~~~~~ In file included from arch/x86/include/asm/page_types.h:47:0, from arch/x86/include/asm/page.h:8, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:58, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/bootmem.h:7, from arch/x86/mm/physaddr.c:1: arch/x86/mm/physaddr.c: In function '__virt_addr_valid': arch/x86/include/asm/page_64_types.h:67:29: error: 'kernel_mapping_size' undeclared (first use in this function) #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ >> arch/x86/mm/physaddr.c:53:12: note: in expansion of macro >> 'KERNEL_MAPPING_SIZE' if (y >= KERNEL_MAPPING_SIZE) ^~~~~~~~~~~~~~~~~~~ -- In file included from arch/x86/include/asm/page_types.h:47:0, from arch/x86/include/asm/page.h:8, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:58, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/wait.h:8, from include/linux/fs.h:5, from include/linux/debugfs.h:18, from arch/x86/mm/dump_pagetables.c:15: arch/x86/mm/dump_pagetables.c: In function 'pt_dump_init': arch/x86/include/asm/page_64_types.h:67:29: error: 'kernel_mapping_size' undeclared (first use in this function) #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ >> arch/x86/include/asm/pgtable_64_types.h:69:48: note: in expansion of macro >> 'KERNEL_MAPPING_SIZE' #define MODULES_VADDR (__START_KERNEL_map + KERNEL_MAPPING_SIZE) ^~~~~~~~~~~~~~~~~~~ >> arch/x86/mm/dump_pagetables.c:445:52: note: in expansion of macro >> 'MODULES_VADDR' address_markers[MODULES_VADDR_NR].start_address = MODULES_VADDR; ^~~~~~~~~~~~~ arch/x86/include/asm/page_64_types.h:67:29: note: each undeclared identifier is reported only once for each function it appears in #define KERNEL_MAPPING_SIZE kernel_mapping_size ^ >> arch/x86/include/asm/pgtable_64_types.h:69:48: note: in expansion of macro >> 'KERNEL_MAPPING_SIZE' #define MODULES_VADDR (__START_KERNEL_map + KERNEL_MAPPING_SIZE) ^~~~~~~~~~~~~~~~~~~ >> arch/x86/mm/dump_pagetables.c:445:52: note: in expansion of macro >> 'MODULES_VADDR' address_markers[MODULES_VADDR_NR].start_address = MODULES_VADDR; ^~~~~~~~~~~~~ vim +/VIRTUAL_BUG_ON +21 arch/x86/mm/physaddr.c 5 6 #include <asm/page.h> 7 8 #include "physaddr.h" 9 10 #ifdef CONFIG_X86_64 11 12 #ifdef CONFIG_DEBUG_VIRTUAL 13 unsigned long __phys_addr(unsigned long x) 14 { 15 unsigned long y = x - __START_KERNEL_map; 16 17 /* use the carry flag to determine if x was < __START_KERNEL_map */ 18 if (unlikely(x > y)) { 19 x = y + phys_base; 20 > 21 VIRTUAL_BUG_ON(y >= KERNEL_MAPPING_SIZE); 22 } else { 23 x = y + (__START_KERNEL_map - PAGE_OFFSET); 24 25 /* carry flag will be set if starting x was >= PAGE_OFFSET */ 26 VIRTUAL_BUG_ON((x > y) || !phys_addr_valid(x)); 27 } 28 29 return x; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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