[patch 2/8] bug: use %pB in BUG and stack protector failure

[patch 2/8] bug: use %pB in BUG and stack protector failure

[akpm]

From: Kees Cook <keescook@chromium.org>
Subject: bug: use %pB in BUG and stack protector failure

The BUG and stack protector reports were still using a raw %p.  This
changes it to %pB for more meaningful output.

Link: http://lkml.kernel.org/r/20180301225704.GA34198@beast
Fixes: ad67b74d2469 ("printk: hash addresses printed with %p")
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Richard Weinberger <richard.weinberger@gmail.com>,
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/panic.c |    2 +-
 lib/bug.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff -puN kernel/panic.c~bug-use-%pb-in-bug-and-stack-protector-failure kernel/panic.c
--- a/kernel/panic.c~bug-use-%pb-in-bug-and-stack-protector-failure
+++ a/kernel/panic.c
@@ -640,7 +640,7 @@ device_initcall(register_warn_debugfs);
  */
 __visible void __stack_chk_fail(void)
 {
-	panic("stack-protector: Kernel stack is corrupted in: %p\n",
+	panic("stack-protector: Kernel stack is corrupted in: %pB\n",
 		__builtin_return_address(0));
 }
 EXPORT_SYMBOL(__stack_chk_fail);
diff -puN lib/bug.c~bug-use-%pb-in-bug-and-stack-protector-failure lib/bug.c
--- a/lib/bug.c~bug-use-%pb-in-bug-and-stack-protector-failure
+++ a/lib/bug.c
@@ -191,7 +191,7 @@ enum bug_trap_type report_bug(unsigned l
 	if (file)
 		pr_crit("kernel BUG at %s:%u!\n", file, line);
 	else
-		pr_crit("Kernel BUG at %p [verbose debug info unavailable]\n",
+		pr_crit("Kernel BUG at %pB [verbose debug info unavailable]\n",
 			(void *)bugaddr);
 
 	return BUG_TRAP_TYPE_BUG;
_