linux-hardening - [PATCH] x86/boot: add prototype for __fortify

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Message-ID: <20240529-fortify_panic-v1-1-9923d5c77657@quicinc.com>
Date: Wed, 29 May 2024 11:09:21 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>,
        Kees Cook <keescook@...omium.org>, "H. Peter Anvin"
	<hpa@...or.com>
CC: <linux-kernel@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>,
        Jeff Johnson <quic_jjohnson@...cinc.com>
Subject: [PATCH] x86/boot: add prototype for __fortify_panic()

As discussed in [1] add a prototype for __fortify_panic() to fix the
'make W=1 C=1' warning:

arch/x86/boot/compressed/misc.c:535:6: warning: symbol '__fortify_panic' was not declared. Should it be static?

Link: https://lore.kernel.org/all/79653cc7-6e59-4657-9c0a-76f49f49d019@quicinc.com/ [1]
Signed-off-by: Jeff Johnson <quic_jjohnson@...cinc.com>
---
 arch/x86/boot/compressed/misc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index b353a7be380c..3a56138484a9 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h
@@ -68,6 +68,7 @@ void __putdec(unsigned long value);
 #define error_putstr(__x)  __putstr(__x)
 #define error_puthex(__x)  __puthex(__x)
 #define error_putdec(__x)  __putdec(__x)
+void __fortify_panic(const u8 reason, size_t avail, size_t size);
 
 #ifdef CONFIG_X86_VERBOSE_BOOTUP
 

---
base-commit: e0cce98fe279b64f4a7d81b7f5c3a23d80b92fbc
change-id: 20240529-fortify_panic-325601efe71d