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Message-Id: <20230814163344.17429-3-andriy.shevchenko@linux.intel.com>
Date: Mon, 14 Aug 2023 19:33:44 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Petr Mladek <pmladek@...e.com>, Marco Elver <elver@...gle.com>,
linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
linux-mm@...ck.org
Cc: Steven Rostedt <rostedt@...dmis.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Alexander Potapenko <glider@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v3 2/2] lib/vsprintf: Declare no_hash_pointers in sprintf.h
Sparse is not happy to see non-static variable without declaration:
lib/vsprintf.c:61:6: warning: symbol 'no_hash_pointers' was not declared. Should it be static?
Declare respective variable in the sprintf.h. With this, add a comment
to discourage its use if no real need.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Acked-by: Marco Elver <elver@...gle.com>
---
include/linux/sprintf.h | 2 ++
lib/test_printf.c | 2 --
mm/kfence/report.c | 3 +--
3 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/include/linux/sprintf.h b/include/linux/sprintf.h
index 9ca23bcf9f42..33dcbec71925 100644
--- a/include/linux/sprintf.h
+++ b/include/linux/sprintf.h
@@ -20,6 +20,8 @@ __printf(2, 0) const char *kvasprintf_const(gfp_t gfp, const char *fmt, va_list
__scanf(2, 3) int sscanf(const char *, const char *, ...);
__scanf(2, 0) int vsscanf(const char *, const char *, va_list);
+/* These are for specific cases, do not use without real need */
+extern bool no_hash_pointers;
int no_hash_pointers_enable(char *str);
#endif /* _LINUX_KERNEL_SPRINTF_H */
diff --git a/lib/test_printf.c b/lib/test_printf.c
index ce749cfac033..69b6a5e177f2 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -42,8 +42,6 @@ KSTM_MODULE_GLOBALS();
static char *test_buffer __initdata;
static char *alloced_buffer __initdata;
-extern bool no_hash_pointers;
-
static int __printf(4, 0) __init
do_test(int bufsize, const char *expect, int elen,
const char *fmt, va_list ap)
diff --git a/mm/kfence/report.c b/mm/kfence/report.c
index 197430a5be4a..c509aed326ce 100644
--- a/mm/kfence/report.c
+++ b/mm/kfence/report.c
@@ -13,6 +13,7 @@
#include <linux/printk.h>
#include <linux/sched/debug.h>
#include <linux/seq_file.h>
+#include <linux/sprintf.h>
#include <linux/stacktrace.h>
#include <linux/string.h>
#include <trace/events/error_report.h>
@@ -26,8 +27,6 @@
#define ARCH_FUNC_PREFIX ""
#endif
-extern bool no_hash_pointers;
-
/* Helper function to either print to a seq_file or to console. */
__printf(2, 3)
static void seq_con_printf(struct seq_file *seq, const char *fmt, ...)
--
2.40.0.1.gaa8946217a0b
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