diff options
| -rw-r--r-- | include/asm-generic/bug.h | 8 | ||||
| -rw-r--r-- | lib/bug.c | 11 |
2 files changed, 12 insertions, 7 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index b4a2639130a0..384b5c835ced 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -10,6 +10,7 @@ #define BUGFLAG_WARNING (1 << 0) #define BUGFLAG_ONCE (1 << 1) #define BUGFLAG_DONE (1 << 2) +#define BUGFLAG_NO_CUT_HERE (1 << 3) /* CUT_HERE already sent */ #define BUGFLAG_TAINT(taint) ((taint) << 8) #define BUG_GET_TAINT(bug) ((bug)->flags >> 8) #endif @@ -86,13 +87,10 @@ void warn_slowpath_fmt(const char *file, const int line, unsigned taint, 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_FLAGS(BUGFLAG_TAINT(TAINT_WARN)); \ - } while (0) +#define __WARN() __WARN_FLAGS(BUGFLAG_TAINT(TAINT_WARN)) #define __WARN_printf(taint, arg...) do { \ __warn_printk(arg); \ - __WARN_FLAGS(BUGFLAG_TAINT(taint)); \ + __WARN_FLAGS(BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\ } while (0) #define WARN_ON_ONCE(condition) ({ \ int __ret_warn_on = !!(condition); \ diff --git a/lib/bug.c b/lib/bug.c index 1077366f496b..8c98af0bf585 100644 --- a/lib/bug.c +++ b/lib/bug.c @@ -181,6 +181,15 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs) } } + /* + * BUG() and WARN_ON() families don't print a custom debug message + * before triggering the exception handler, so we must add the + * "cut here" line now. WARN() issues its own "cut here" before the + * extra debugging message it writes before triggering the handler. + */ + if ((bug->flags & BUGFLAG_NO_CUT_HERE) == 0) + printk(KERN_DEFAULT CUT_HERE); + if (warning) { /* this is a WARN_ON rather than BUG/BUG_ON */ __warn(file, line, (void *)bugaddr, BUG_GET_TAINT(bug), regs, @@ -188,8 +197,6 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs) return BUG_TRAP_TYPE_WARN; } - printk(KERN_DEFAULT CUT_HERE); - if (file) pr_crit("kernel BUG at %s:%u!\n", file, line); else |