From 4f9a58d75bfe82ab2b8ba5b8506dfb190a267834 Mon Sep 17 00:00:00 2001
From: Olaf Hering <olaf@aepfle.de>
Date: Tue, 16 Oct 2007 23:30:12 -0700
Subject: increase AT_VECTOR_SIZE to terminate saved_auxv properly

include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO.  fs/binfmt_elf.c
has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT
entries.  So in the worst case, saved_auxv does not get an AT_NULL entry at
the end.

The saved_auxv array must be terminated with an AT_NULL entry.  Make the
size of mm_struct->saved_auxv arch dependend, based on the number of
ARCH_DLINFO entries.

Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Roland McGrath <roland@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/asm-ia64/elf.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/asm-ia64/elf.h')

diff --git a/include/asm-ia64/elf.h b/include/asm-ia64/elf.h
index 25f9835d5459..f10e29b60b00 100644
--- a/include/asm-ia64/elf.h
+++ b/include/asm-ia64/elf.h
@@ -192,6 +192,7 @@ extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
 
 #define GATE_EHDR	((const struct elfhdr *) GATE_ADDR)
 
+/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
 #define ARCH_DLINFO								\
 do {										\
 	extern char __kernel_syscall_via_epc[];					\
-- 
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