linux-kernel - Re: [PATCH] mm/kasan: Print frame description for stack bugs

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Message-Id: <20190521191050.b8ddb9bb660d13330896529e@linux-foundation.org>
Date:   Tue, 21 May 2019 19:10:50 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     Marco Elver <elver@...gle.com>, kbuild-all@...org,
        aryabinin@...tuozzo.com, dvyukov@...gle.com, glider@...gle.com,
        andreyknvl@...gle.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, kasan-dev@...glegroups.com
Subject: Re: [PATCH] mm/kasan: Print frame description for stack bugs

On Sun, 19 May 2019 04:48:21 +0800 kbuild test robot <lkp@...el.com> wrote:

> Hi Marco,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on linus/master]
> [also build test WARNING on v5.1 next-20190517]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Marco-Elver/mm-kasan-Print-frame-description-for-stack-bugs/20190519-040214
> config: xtensa-allyesconfig (attached as .config)
> compiler: xtensa-linux-gcc (GCC) 8.1.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         GCC_VERSION=8.1.0 make.cross ARCH=xtensa 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@...el.com>
> 

This, I assume?

--- a/mm/kasan/report.c~mm-kasan-print-frame-description-for-stack-bugs-fix
+++ a/mm/kasan/report.c
@@ -230,7 +230,7 @@ static void print_decoded_frame_descr(co
 		return;
 
 	pr_err("\n");
-	pr_err("this frame has %zu %s:\n", num_objects,
+	pr_err("this frame has %lu %s:\n", num_objects,
 	       num_objects == 1 ? "object" : "objects");
 
 	while (num_objects--) {
@@ -257,7 +257,7 @@ static void print_decoded_frame_descr(co
 		strreplace(token, ':', '\0');
 
 		/* Finally, print object information. */
-		pr_err(" [%zu, %zu) '%s'", offset, offset + size, token);
+		pr_err(" [%lu, %lu) '%s'", offset, offset + size, token);
 	}
 }
 
_