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include/asm-generic/bug.h: fix "cut here" for WARN_ON for __WARN_TAINT architectures

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For architectures using __WARN_TAINT, the WARN_ON macro did not print
out the "cut here" string.  The other WARN_XXX macros would print "cut
here" inside __warn_printk, which is not called for WARN_ON since it
doesn't have a message to print.

Link: http://lkml.kernel.org/r/20190624154831.163888-1-ddavenport@chromium.org
Fixes: a7bed27af1 ("bug: fix "cut here" location for __WARN_TAINT architectures")
Signed-off-by: Drew Davenport <ddavenport@chromium.org>
Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Drew Davenport 2019-07-16 16:30:18 -07:00 committed by Linus Torvalds
parent 778c1f5ccb
commit 6b15f678fb
1 changed files with 4 additions and 2 deletions
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6
include/asm-generic/bug.h
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@ -104,8 +104,10 @@ extern void warn_slowpath_null(const char *file, const int line);
warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg)
#else
extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
#define __WARN() __WARN_TAINT(TAINT_WARN)
#define __WARN_printf(arg...) do { __warn_printk(arg); __WARN(); } while (0)
#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