File 0046-powerpc-fix-command-line-overflow-error.patch of Package kexec-tools

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File 0046-powerpc-fix-command-line-overflow-error.patch of Package kexec-tools (Revision 80994b711827dc385eac3ece84f77c97)

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From 21eb397a5fc9227cd95d23e8c74a49cf6a293e57 Mon Sep 17 00:00:00 2001
From: Hari Bathini <hbathini@linux.vnet.ibm.com>
Date: Wed, 9 Aug 2017 23:47:42 +0530
Subject: [PATCH] kexec-tools: powerpc: fix command line overflow error

References: bsc#1074947
Patch-mainline: v2.0.16-rc1
Git-commit: 21eb397a5fc9227cd95d23e8c74a49cf6a293e57

Since kernel commit a5980d064fe2 ("powerpc: Bump COMMAND_LINE_SIZE
to 2048"), powerpc bumped command line size to 2048 but the size
used here is still the default value of 512. Bump it to 2048 to
fix command line overflow errors observed when command line length
is above 512 bytes. Also, get rid of the multiple definitions of
COMMAND_LINE_SIZE macro in ppc architecture.

Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 kexec/arch/ppc/crashdump-powerpc.c | 6 +++++-
 kexec/arch/ppc/crashdump-powerpc.h | 2 --
 kexec/arch/ppc/fs2dt.c             | 1 -
 kexec/arch/ppc/kexec-ppc.h         | 3 ++-
 kexec/arch/ppc/ops.h               | 1 -
 kexec/arch/ppc64/crashdump-ppc64.c | 6 ++++--
 kexec/arch/ppc64/crashdump-ppc64.h | 2 +-
 7 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/kexec/arch/ppc/crashdump-powerpc.c b/kexec/arch/ppc/crashdump-powerpc.c
index dde6de7ec7a1..4ad026f38dd0 100644
--- a/kexec/arch/ppc/crashdump-powerpc.c
+++ b/kexec/arch/ppc/crashdump-powerpc.c
@@ -252,8 +252,12 @@ static void ulltoa(unsigned long long i, char *str)
 /* Append str to cmdline */
 static void add_cmdline(char *cmdline, char *str)
 {
+	int cmdline_size;
 	int cmdlen = strlen(cmdline) + strlen(str);
-	if (cmdlen > (COMMAND_LINE_SIZE - 1))
+
+	cmdline_size = (kernel_version() < KERNEL_VERSION(3, 15, 0) ?
+			512 : COMMAND_LINE_SIZE);
+	if (cmdlen > (cmdline_size - 1))
 		die("Command line overflow\n");
 	strcat(cmdline, str);
 }
diff --git a/kexec/arch/ppc/crashdump-powerpc.h b/kexec/arch/ppc/crashdump-powerpc.h
index 9b9b01e3157b..97b5095ba748 100644
--- a/kexec/arch/ppc/crashdump-powerpc.h
+++ b/kexec/arch/ppc/crashdump-powerpc.h
@@ -20,8 +20,6 @@ extern struct arch_options_t arch_options;
 #define KERNELBASE	PAGE_OFFSET
 #define __pa(x)		((unsigned long)(x)-PAGE_OFFSET)
 
-#define COMMAND_LINE_SIZE	512 /* from kernel */
-
 #ifdef CONFIG_BOOKE
 /* We don't need backup region in Book E */
 #define BACKUP_SRC_START	0x0000
diff --git a/kexec/arch/ppc/fs2dt.c b/kexec/arch/ppc/fs2dt.c
index 6e7737919695..fed499b4da9d 100644
--- a/kexec/arch/ppc/fs2dt.c
+++ b/kexec/arch/ppc/fs2dt.c
@@ -37,7 +37,6 @@
 #define TREEWORDS		65536	/* max 32 bit words for properties */
 #define MEMRESERVE		256	/* max number of reserved memory blks */
 #define MAX_MEMORY_RANGES	1024
-#define COMMAND_LINE_SIZE	512	/* from kernel */
 
 static char pathname[MAXPATH];
 static char propnames[NAMESPACE] = { 0 };
diff --git a/kexec/arch/ppc/kexec-ppc.h b/kexec/arch/ppc/kexec-ppc.h
index f8fd67827e43..04e728eddf7f 100644
--- a/kexec/arch/ppc/kexec-ppc.h
+++ b/kexec/arch/ppc/kexec-ppc.h
@@ -6,6 +6,8 @@
 #define CORE_TYPE_ELF32	1
 #define CORE_TYPE_ELF64	2
 
+#define COMMAND_LINE_SIZE	2048 /* from kernel */
+
 extern unsigned char setup_simple_start[];
 extern uint32_t setup_simple_size;
 
@@ -76,7 +78,6 @@ extern int init_memory_region_info(void);
 extern int read_memory_region_limits(int fd, unsigned long long *start,
 					unsigned long long *end);
 extern int get_devtree_value(const char *fname, unsigned long long *pvalue);
-#define COMMAND_LINE_SIZE	512 /* from kernel */
 /*fs2dt*/
 void reserve(unsigned long long where, unsigned long long length);
 
diff --git a/kexec/arch/ppc/ops.h b/kexec/arch/ppc/ops.h
index 7334a059dd94..5e7a070808d3 100644
--- a/kexec/arch/ppc/ops.h
+++ b/kexec/arch/ppc/ops.h
@@ -12,7 +12,6 @@
 #define _PPC_BOOT_OPS_H_
 #include "types.h"
 
-#define	COMMAND_LINE_SIZE	512
 #define	MAX_PATH_LEN		256
 #define	MAX_PROP_LEN		256 /* What should this be? */
 
diff --git a/kexec/arch/ppc64/crashdump-ppc64.c b/kexec/arch/ppc64/crashdump-ppc64.c
index 5a71d5161c87..13995bfb8fc1 100644
--- a/kexec/arch/ppc64/crashdump-ppc64.c
+++ b/kexec/arch/ppc64/crashdump-ppc64.c
@@ -381,7 +381,7 @@ static void ultoa(uint64_t i, char *str)
 static int add_cmdline_param(char *cmdline, uint64_t addr, char *cmdstr,
 				char *byte)
 {
-	int cmdlen, len, align = 1024;
+	int cmdline_size, cmdlen, len, align = 1024;
 	char str[COMMAND_LINE_SIZE], *ptr;
 
 	/* Passing in =xxxK / =xxxM format. Saves space required in cmdline.*/
@@ -402,7 +402,9 @@ static int add_cmdline_param(char *cmdline, uint64_t addr, char *cmdstr,
 	strcat(str, byte);
 	len = strlen(str);
 	cmdlen = strlen(cmdline) + len;
-	if (cmdlen > (COMMAND_LINE_SIZE - 1))
+	cmdline_size = (kernel_version() < KERNEL_VERSION(3, 15, 0) ?
+			512 : COMMAND_LINE_SIZE);
+	if (cmdlen > (cmdline_size - 1))
 		die("Command line overflow\n");
 	strcat(cmdline, str);
 	dbgprintf("Command line after adding elfcorehdr: %s\n", cmdline);
diff --git a/kexec/arch/ppc64/crashdump-ppc64.h b/kexec/arch/ppc64/crashdump-ppc64.h
index d654c6b5e8a9..42ccc31e538c 100644
--- a/kexec/arch/ppc64/crashdump-ppc64.h
+++ b/kexec/arch/ppc64/crashdump-ppc64.h
@@ -16,7 +16,7 @@ void add_usable_mem_rgns(unsigned long long base, unsigned long long size);
 #define __pa(x)         ((unsigned long)(x)-PAGE_OFFSET)
 #define MAXMEM          (-KERNELBASE-VMALLOCBASE)
 
-#define COMMAND_LINE_SIZE       512 /* from kernel */
+#define COMMAND_LINE_SIZE       2048 /* from kernel */
 /* Backup Region, First 64K of System RAM. */
 #define BACKUP_SRC_START    0x0000
 #define BACKUP_SRC_END      0xffff
-- 
2.13.6

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File 0046-powerpc-fix-command-line-overflow-error.patch of Package kexec-tools (Revision 80994b711827dc385eac3ece84f77c97)

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