There's no reason to have specialized helpers for passing the warn taint down to __warn(). Consolidate and refactor helper macros, removing __WARN_printf() and warn_slowpath_fmt_taint().
Signed-off-by: Kees Cook <[email protected]> --- include/asm-generic/bug.h | 13 ++++--------- kernel/panic.c | 18 +++--------------- 2 files changed, 7 insertions(+), 24 deletions(-) diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index aa6c093d9ce9..ce466432ac3e 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -90,24 +90,19 @@ struct bug_entry { * Use the versions with printk format strings to provide better diagnostics. */ #ifndef __WARN_TAINT -extern __printf(3, 4) -void warn_slowpath_fmt(const char *file, const int line, - const char *fmt, ...); extern __printf(4, 5) -void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint, - const char *fmt, ...); +void warn_slowpath_fmt(const char *file, const int line, unsigned taint, + const char *fmt, ...); extern void warn_slowpath_null(const char *file, const int line); #define WANT_WARN_ON_SLOWPATH #define __WARN() warn_slowpath_null(__FILE__, __LINE__) -#define __WARN_printf(arg...) warn_slowpath_fmt(__FILE__, __LINE__, arg) #define __WARN_printf_taint(taint, arg...) \ - warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg) + warn_slowpath_fmt(__FILE__, __LINE__, taint, arg) #else extern __printf(1, 2) void __warn_printk(const char *fmt, ...); #define __WARN() do { \ printk(KERN_WARNING CUT_HERE); __WARN_TAINT(TAINT_WARN); \ } while (0) -#define __WARN_printf(arg...) __WARN_printf_taint(TAINT_WARN, arg) #define __WARN_printf_taint(taint, arg...) \ do { __warn_printk(arg); __WARN_TAINT(taint); } while (0) #endif @@ -132,7 +127,7 @@ void __warn(const char *file, int line, void *caller, unsigned taint, #define WARN(condition, format...) ({ \ int __ret_warn_on = !!(condition); \ if (unlikely(__ret_warn_on)) \ - __WARN_printf(format); \ + __WARN_printf_taint(TAINT_WARN, format); \ unlikely(__ret_warn_on); \ }) #endif diff --git a/kernel/panic.c b/kernel/panic.c index 057540b6eee9..4d8b7577c82c 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -592,20 +592,8 @@ void __warn(const char *file, int line, void *caller, unsigned taint, } #ifdef WANT_WARN_ON_SLOWPATH -void warn_slowpath_fmt(const char *file, int line, const char *fmt, ...) -{ - struct warn_args args; - - args.fmt = fmt; - va_start(args.args, fmt); - __warn(file, line, __builtin_return_address(0), TAINT_WARN, NULL, - &args); - va_end(args.args); -} -EXPORT_SYMBOL(warn_slowpath_fmt); - -void warn_slowpath_fmt_taint(const char *file, int line, - unsigned taint, const char *fmt, ...) +void warn_slowpath_fmt(const char *file, int line, unsigned taint, + const char *fmt, ...) { struct warn_args args; @@ -614,7 +602,7 @@ void warn_slowpath_fmt_taint(const char *file, int line, __warn(file, line, __builtin_return_address(0), taint, NULL, &args); va_end(args.args); } -EXPORT_SYMBOL(warn_slowpath_fmt_taint); +EXPORT_SYMBOL(warn_slowpath_fmt); void warn_slowpath_null(const char *file, int line) { -- 2.17.1
