Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu,  9 Jun 2022 22:16:22 +0000
In-Reply-To: <20220609221702.347522-1-morbo@google.com>
Message-Id: <20220609221702.347522-4-morbo@google.com>
Mime-Version: 1.0
References: <20220609221702.347522-1-morbo@google.com>
Subject: [PATCH 03/12] x86/e820: use correct format characters
From:   Bill Wendling <morbo@google.com>
To:     isanbard@gmail.com
Cc:     Tony Luck <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Phillip Potter <phil@philpotter.co.uk>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Jan Kara <jack@suse.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
        Florian Westphal <fw@strlen.de>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Tom Rix <trix@redhat.com>,
        Ross Philipson <ross.philipson@oracle.com>,
        Daniel Kiper <daniel.kiper@oracle.com>,
        linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-acpi@vger.kernel.org, linux-mm@kvack.org,
        netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
        netdev@vger.kernel.org, alsa-devel@alsa-project.org,
        llvm@lists.linux.dev
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

From: Bill Wendling <isanbard@gmail.com>

When compiling with -Wformat, clang emits the following warnings:

arch/x86/kernel/e820.c:877:15: error: format string is not a string literal (potentially insecure) [-Werror,-Wformat-security]
        early_printk(msg);
                     ^~~
arch/x86/kernel/e820.c:878:8: error: format string is not a string literal (potentially insecure) [-Werror,-Wformat-security]
        panic(msg);
              ^~~

Use a string literal for the format string.

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Bill Wendling <isanbard@gmail.com>
---
 arch/x86/kernel/e820.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index f267205f2d5a..ca4634a0bdb5 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -874,8 +874,8 @@ unsigned long __init e820__end_of_low_ram_pfn(void)
 
 static void __init early_panic(char *msg)
 {
-	early_printk(msg);
-	panic(msg);
+	early_printk("%s", msg);
+	panic("%s", msg);
 }
 
 static int userdef __initdata;
-- 
2.36.1.255.ge46751e96f-goog