Hi David, kernel test robot noticed the following build errors:
[auto build test ERROR on 0c1c7a6a83feaf2cf182c52983ffe330ffb50280] url: https://github.com/intel-lab-lkp/linux/commits/David-Heidelberg-via-B4-Relay/mm-vmalloc-warn-only-once-when-vmalloc-detect-invalid-gfp-flags/20251118-080722 base: 0c1c7a6a83feaf2cf182c52983ffe330ffb50280 patch link: https://lore.kernel.org/r/20251118-only-one-vmalloc-v1-1-29f8eacb4605%40ixit.cz patch subject: [PATCH] mm/vmalloc: warn only once when vmalloc detect invalid gfp flags config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20251118/[email protected]/config) compiler: alpha-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251118/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All error/warnings (new ones prefixed by >>): In file included from arch/alpha/include/asm/bug.h:23, from include/linux/bug.h:5, from include/linux/alloc_tag.h:8, from include/linux/vmalloc.h:5, from mm/vmalloc.c:11: mm/vmalloc.c: In function 'vmalloc_fix_flags': >> mm/vmalloc.c:3938:19: error: expected ')' before 'invalid_mask' 3938 | invalid_mask, &invalid_mask, flags, &flags); | ^~~~~~~~~~~~ include/asm-generic/bug.h:105:62: note: in definition of macro '__WARN_printf' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ include/asm-generic/bug.h:105:34: note: to match this '(' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^ include/asm-generic/bug.h:141:17: note: in expansion of macro '__WARN_printf' 141 | __WARN_printf(TAINT_WARN, format); \ | ^~~~~~~~~~~~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ >> mm/vmalloc.c:3937:22: warning: format '%x' expects a matching 'unsigned int' >> argument [-Wformat=] 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:105:62: note: in definition of macro '__WARN_printf' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ mm/vmalloc.c:3937:41: note: format string is defined here 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ~~^ | | | unsigned int >> mm/vmalloc.c:3937:22: warning: format '%p' expects a matching 'void *' >> argument [-Wformat=] 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:105:62: note: in definition of macro '__WARN_printf' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ mm/vmalloc.c:3937:45: note: format string is defined here 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ~^ | | | void * >> mm/vmalloc.c:3937:22: warning: format '%x' expects a matching 'unsigned int' >> argument [-Wformat=] 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:105:62: note: in definition of macro '__WARN_printf' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ mm/vmalloc.c:3937:71: note: format string is defined here 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ~~^ | | | unsigned int >> mm/vmalloc.c:3937:22: warning: format '%p' expects a matching 'void *' >> argument [-Wformat=] 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:105:62: note: in definition of macro '__WARN_printf' 105 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:31:25: note: in expansion of macro 'WARN' 31 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:159:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 159 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ mm/vmalloc.c:3937:9: note: in expansion of macro 'WARN_ONCE' 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ^~~~~~~~~ mm/vmalloc.c:3937:75: note: format string is defined here 3937 | WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" | ~^ | | | void * >> mm/vmalloc.c:3934:15: warning: unused variable 'invalid_mask' >> [-Wunused-variable] 3934 | gfp_t invalid_mask = flags & ~GFP_VMALLOC_SUPPORTED; | ^~~~~~~~~~~~ vim +3938 mm/vmalloc.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 3921 7179b225631532 Vishal Moola (Oracle 2025-11-12 3922) /* 7179b225631532 Vishal Moola (Oracle 2025-11-12 3923) * See __vmalloc_node_range() for a clear list of supported vmalloc flags. 7179b225631532 Vishal Moola (Oracle 2025-11-12 3924) * This gfp lists all flags currently passed through vmalloc. Currently, 7179b225631532 Vishal Moola (Oracle 2025-11-12 3925) * __GFP_ZERO is used by BPF and __GFP_NORETRY is used by percpu. Both drm 7179b225631532 Vishal Moola (Oracle 2025-11-12 3926) * and BPF also use GFP_USER, which is GFP_KERNEL | __GFP_HARDWALL. 7179b225631532 Vishal Moola (Oracle 2025-11-12 3927) */ 7179b225631532 Vishal Moola (Oracle 2025-11-12 3928) #define GFP_VMALLOC_SUPPORTED (GFP_KERNEL | GFP_ATOMIC | GFP_NOWAIT |\ 7179b225631532 Vishal Moola (Oracle 2025-11-12 3929) __GFP_NOFAIL | __GFP_ZERO | __GFP_NORETRY |\ 7179b225631532 Vishal Moola (Oracle 2025-11-12 3930) __GFP_HARDWALL) 7179b225631532 Vishal Moola (Oracle 2025-11-12 3931) 7179b225631532 Vishal Moola (Oracle 2025-11-12 3932) static gfp_t vmalloc_fix_flags(gfp_t flags) 7179b225631532 Vishal Moola (Oracle 2025-11-12 3933) { 7179b225631532 Vishal Moola (Oracle 2025-11-12 @3934) gfp_t invalid_mask = flags & ~GFP_VMALLOC_SUPPORTED; 7179b225631532 Vishal Moola (Oracle 2025-11-12 3935) 7179b225631532 Vishal Moola (Oracle 2025-11-12 3936) flags &= GFP_VMALLOC_SUPPORTED; bf791000a32caf David Heidelberg 2025-11-18 @3937 WARN_ONCE(1, "Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n" 7179b225631532 Vishal Moola (Oracle 2025-11-12 @3938) invalid_mask, &invalid_mask, flags, &flags); 7179b225631532 Vishal Moola (Oracle 2025-11-12 3939) return flags; 7179b225631532 Vishal Moola (Oracle 2025-11-12 3940) } 7179b225631532 Vishal Moola (Oracle 2025-11-12 3941) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
