From 085163831bda1edc3066bdbd088ff1f3ac514737 Mon Sep 17 00:00:00 2001
From: Suleiman Souhlal <ssouhlal@FreeBSD.org>
Date: Wed, 30 Aug 2006 19:37:20 +0200
Subject: [PATCH] --- yaml --- r: 33709 b: refs/heads/master c:
 ec0063b40a2291e095faf07fbeb94be92e525c54 h: refs/heads/master i:   33707:
 8d6f41ab10093703b1311cc0f5a97f6c7406e056 v: v3

---
 [refs]                               |  2 +-
 trunk/arch/x86_64/ia32/ia32_binfmt.c | 57 +++++++++++++++-------------
 2 files changed, 32 insertions(+), 27 deletions(-)

diff --git a/[refs] b/[refs]
index da2fa817c96c..e8976e13d2dd 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 01ebb77b31149d847726a8847ad0d37631d7f049
+refs/heads/master: ec0063b40a2291e095faf07fbeb94be92e525c54
diff --git a/trunk/arch/x86_64/ia32/ia32_binfmt.c b/trunk/arch/x86_64/ia32/ia32_binfmt.c
index a9dc0f3b5b51..2fd5a67fd435 100644
--- a/trunk/arch/x86_64/ia32/ia32_binfmt.c
+++ b/trunk/arch/x86_64/ia32/ia32_binfmt.c
@@ -73,39 +73,44 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  * Dumping its extra ELF program headers includes all the other information
  * a debugger needs to easily find how the vsyscall DSO was being used.
  */
-#define ELF_CORE_EXTRA_PHDRS		(VSYSCALL32_EHDR->e_phnum)
+#define ELF_CORE_EXTRA_PHDRS	(find_vma(current->mm, VSYSCALL32_BASE) ?     \
+    (VSYSCALL32_EHDR->e_phnum) : 0)
 #define ELF_CORE_WRITE_EXTRA_PHDRS					      \
 do {									      \
-	const struct elf32_phdr *const vsyscall_phdrs =			      \
-		(const struct elf32_phdr *) (VSYSCALL32_BASE		      \
-					   + VSYSCALL32_EHDR->e_phoff);	      \
-	int i;								      \
-	Elf32_Off ofs = 0;						      \
-	for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {		      \
-		struct elf32_phdr phdr = vsyscall_phdrs[i];		      \
-		if (phdr.p_type == PT_LOAD) {				      \
-			BUG_ON(ofs != 0);				      \
-			ofs = phdr.p_offset = offset;			      \
-			phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);	      \
-			phdr.p_filesz = phdr.p_memsz;			      \
-			offset += phdr.p_filesz;			      \
+	if (find_vma(current->mm, VSYSCALL32_BASE)) { 			      \
+		const struct elf32_phdr *const vsyscall_phdrs =		      \
+			(const struct elf32_phdr *) (VSYSCALL32_BASE	      \
+						   + VSYSCALL32_EHDR->e_phoff);\
+		int i;							      \
+		Elf32_Off ofs = 0;					      \
+		for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {	      \
+			struct elf32_phdr phdr = vsyscall_phdrs[i];	      \
+			if (phdr.p_type == PT_LOAD) {			      \
+				BUG_ON(ofs != 0);			      \
+				ofs = phdr.p_offset = offset;		      \
+				phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);      \
+				phdr.p_filesz = phdr.p_memsz;		      \
+				offset += phdr.p_filesz;		      \
+			}						      \
+			else						      \
+				phdr.p_offset += ofs;			      \
+			phdr.p_paddr = 0; /* match other core phdrs */	      \
+			DUMP_WRITE(&phdr, sizeof(phdr));		      \
 		}							      \
-		else							      \
-			phdr.p_offset += ofs;				      \
-		phdr.p_paddr = 0; /* match other core phdrs */		      \
-		DUMP_WRITE(&phdr, sizeof(phdr));			      \
 	}								      \
 } while (0)
 #define ELF_CORE_WRITE_EXTRA_DATA					      \
 do {									      \
-	const struct elf32_phdr *const vsyscall_phdrs =			      \
-		(const struct elf32_phdr *) (VSYSCALL32_BASE		      \
-					   + VSYSCALL32_EHDR->e_phoff);	      \
-	int i;								      \
-	for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {		      \
-		if (vsyscall_phdrs[i].p_type == PT_LOAD)		      \
-			DUMP_WRITE((void *) (u64) vsyscall_phdrs[i].p_vaddr,	      \
-				   PAGE_ALIGN(vsyscall_phdrs[i].p_memsz));    \
+	if (find_vma(current->mm, VSYSCALL32_BASE)) { 			      \
+		const struct elf32_phdr *const vsyscall_phdrs =		      \
+			(const struct elf32_phdr *) (VSYSCALL32_BASE	      \
+						   + VSYSCALL32_EHDR->e_phoff);      \
+		int i;							      \
+		for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {	      \
+			if (vsyscall_phdrs[i].p_type == PT_LOAD)	      \
+				DUMP_WRITE((void *) (u64) vsyscall_phdrs[i].p_vaddr,\
+				    PAGE_ALIGN(vsyscall_phdrs[i].p_memsz));   \
+		}							      \
 	}								      \
 } while (0)