linux-kernel - [PATCH] x86/tools/relocs: add _

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Date:   Sat, 27 Feb 2021 10:53:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     x86@...nel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] x86/tools/relocs: add __printf attribute to die()

There are a number of printf "mismatches" in the use of die() in
x86/tools/relocs.c.  Fix them up and add the printf attribute to the
reloc.h header file to prevent them from ever coming back.

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/x86/tools/relocs.c | 21 +++++++++++----------
 arch/x86/tools/relocs.h |  1 +
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index ce7188cbdae5..c3105a8c6cde 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -389,7 +389,8 @@ static void read_ehdr(FILE *fp)
 		Elf_Shdr shdr;
 
 		if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0)
-			die("Seek to %d failed: %s\n", ehdr.e_shoff, strerror(errno));
+			die("Seek to %d failed: %s\n",
+			    (int)ehdr.e_shoff, strerror(errno));
 
 		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
 			die("Cannot read initial ELF section header: %s\n", strerror(errno));
@@ -412,17 +413,17 @@ static void read_shdrs(FILE *fp)
 
 	secs = calloc(shnum, sizeof(struct section));
 	if (!secs) {
-		die("Unable to allocate %d section headers\n",
+		die("Unable to allocate %ld section headers\n",
 		    shnum);
 	}
 	if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) {
 		die("Seek to %d failed: %s\n",
-			ehdr.e_shoff, strerror(errno));
+			(int)ehdr.e_shoff, strerror(errno));
 	}
 	for (i = 0; i < shnum; i++) {
 		struct section *sec = &secs[i];
 		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
-			die("Cannot read ELF section headers %d/%d: %s\n",
+			die("Cannot read ELF section headers %d/%ld: %s\n",
 			    i, shnum, strerror(errno));
 		sec->shdr.sh_name      = elf_word_to_cpu(shdr.sh_name);
 		sec->shdr.sh_type      = elf_word_to_cpu(shdr.sh_type);
@@ -451,11 +452,11 @@ static void read_strtabs(FILE *fp)
 		sec->strtab = malloc(sec->shdr.sh_size);
 		if (!sec->strtab) {
 			die("malloc of %d bytes for strtab failed\n",
-				sec->shdr.sh_size);
+				(int)sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
 			die("Seek to %d failed: %s\n",
-				sec->shdr.sh_offset, strerror(errno));
+				(int)sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->strtab, 1, sec->shdr.sh_size, fp)
 		    != sec->shdr.sh_size) {
@@ -476,11 +477,11 @@ static void read_symtabs(FILE *fp)
 		sec->symtab = malloc(sec->shdr.sh_size);
 		if (!sec->symtab) {
 			die("malloc of %d bytes for symtab failed\n",
-				sec->shdr.sh_size);
+				(int)sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
 			die("Seek to %d failed: %s\n",
-				sec->shdr.sh_offset, strerror(errno));
+				(int)sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->symtab, 1, sec->shdr.sh_size, fp)
 		    != sec->shdr.sh_size) {
@@ -509,11 +510,11 @@ static void read_relocs(FILE *fp)
 		sec->reltab = malloc(sec->shdr.sh_size);
 		if (!sec->reltab) {
 			die("malloc of %d bytes for relocs failed\n",
-				sec->shdr.sh_size);
+				(int)sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
 			die("Seek to %d failed: %s\n",
-				sec->shdr.sh_offset, strerror(errno));
+				(int)sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->reltab, 1, sec->shdr.sh_size, fp)
 		    != sec->shdr.sh_size) {
diff --git a/arch/x86/tools/relocs.h b/arch/x86/tools/relocs.h
index 43c83c0fd22c..4c49c82446eb 100644
--- a/arch/x86/tools/relocs.h
+++ b/arch/x86/tools/relocs.h
@@ -17,6 +17,7 @@
 #include <regex.h>
 #include <tools/le_byteshift.h>
 
+__attribute__((__format__(printf, 1, 2)))
 void die(char *fmt, ...) __attribute__((noreturn));
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-- 
2.30.1