tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 31caf8b2a847214be856f843e251fc2ed2cd1075 commit: 9f0b4807a44ff81cf59421c8a86641efec586610 um: rework userspace stubs to not hard-code stub location date: 9 days ago config: um-i386_defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9f0b4807a44ff81cf59421c8a86641efec586610 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 9f0b4807a44ff81cf59421c8a86641efec586610 # save the attached .config to linux build tree make W=1 ARCH=um SUBARCH=i386
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): In file included from arch/x86/um/shared/sysdep/stub.h:9, from arch/um/kernel/skas/clone.c:14: >> arch/x86/um/shared/sysdep/stub_32.h:80:1: warning: 'inline' is not at >> beginning of declaration [-Wold-style-declaration] 80 | static void inline remap_stack_and_trap(void) | ^~~~~~ -- In file included from arch/x86/um/shared/sysdep/stub.h:9, from arch/um/os-Linux/skas/process.c:23: >> arch/x86/um/shared/sysdep/stub_32.h:80:1: warning: 'inline' is not at >> beginning of declaration [-Wold-style-declaration] 80 | static void inline remap_stack_and_trap(void) | ^~~~~~ arch/um/os-Linux/skas/process.c:106:6: warning: no previous prototype for 'wait_stub_done' [-Wmissing-prototypes] 106 | void wait_stub_done(int pid) | ^~~~~~~~~~~~~~ arch/um/os-Linux/skas/process.c:720:6: warning: no previous prototype for '__switch_mm' [-Wmissing-prototypes] 720 | void __switch_mm(struct mm_id *mm_idp) | ^~~~~~~~~~~ vim +/inline +80 arch/x86/um/shared/sysdep/stub_32.h 79 > 80 static void inline remap_stack_and_trap(void) 81 { 82 __asm__ volatile ( 83 "movl %%esp,%%ebx ;" 84 "andl %0,%%ebx ;" 85 "movl %1,%%eax ;" 86 "movl %%ebx,%%edi ; addl %2,%%edi ; movl (%%edi),%%edi ;" 87 "movl %%ebx,%%ebp ; addl %3,%%ebp ; movl (%%ebp),%%ebp ;" 88 "int $0x80 ;" 89 "addl %4,%%ebx ; movl %%eax, (%%ebx) ;" 90 "int $3" 91 : : 92 "g" (~(UM_KERN_PAGE_SIZE - 1)), 93 "g" (STUB_MMAP_NR), 94 "g" (UML_STUB_FIELD_FD), 95 "g" (UML_STUB_FIELD_OFFSET), 96 "g" (UML_STUB_FIELD_CHILD_ERR), 97 "c" (UM_KERN_PAGE_SIZE), 98 "d" (PROT_READ | PROT_WRITE), 99 "S" (MAP_FIXED | MAP_SHARED) 100 : 101 "memory"); 102 } 103 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
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