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bug: clean up helper macros to remove __WARN_TAINT() 

In preparation for cleaning up "cut here" even more, this removes the
__WARN_*TAINT() helpers, as they limit the ability to add new BUGFLAG_*
flags to call sites.  They are removed by expanding them into full
__WARN_FLAGS() calls.

Link: http://lkml.kernel.org/r/20190819234111.9019-6-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kees Cook 2019-09-25 16:48:04 -07:00 committed by Linus Torvalds
parent d38aba49a9
commit d4bce140b4
1 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
include/asm-generic/bug.h
View File

@ -62,13 +62,11 @@ struct bug_entry {
#endif
#ifdef __WARN_FLAGS
#define __WARN_TAINT(taint) __WARN_FLAGS(BUGFLAG_TAINT(taint))
#define __WARN_ONCE_TAINT(taint) __WARN_FLAGS(BUGFLAG_ONCE|BUGFLAG_TAINT(taint))
#define WARN_ON_ONCE(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_ONCE_TAINT(TAINT_WARN); \
__WARN_FLAGS(BUGFLAG_ONCE | \
BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \
})
#endif
@ -89,7 +87,7 @@ struct bug_entry {
*
* Use the versions with printk format strings to provide better diagnostics.
*/
#ifndef __WARN_TAINT
#ifndef __WARN_FLAGS
extern __printf(4, 5)
void warn_slowpath_fmt(const char *file, const int line, unsigned taint,
const char *fmt, ...);
@ -99,11 +97,14 @@ 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_TAINT(TAINT_WARN); \
} while (0)
#define __WARN_printf(taint, arg...) \
do { __warn_printk(arg); __WARN_TAINT(taint); } while (0)
#define __WARN() do { \
printk(KERN_WARNING CUT_HERE); \
__WARN_FLAGS(BUGFLAG_TAINT(TAINT_WARN)); \
} while (0)
#define __WARN_printf(taint, arg...) do { \
__warn_printk(arg); \
__WARN_FLAGS(BUGFLAG_TAINT(taint)); \
} while (0)
#endif
/* used internally by panic.c */