From e50645e774a02395f5bc3e3291327cd63cf4ee63 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@woody.linux-foundation.org>
Date: Mon, 3 Mar 2008 10:12:14 -0800
Subject: [PATCH] --- yaml --- r: 86627 b: refs/heads/master c:
 a64e715fc74b1a7dcc5944f848acc38b2c4d4ee2 h: refs/heads/master i:   86625:
 51954f2eccac61ea87ac6a26d63efa678e858320   86623:
 18b8436cd799bcd496ad498a86837d4c6538189e v: v3

---
 [refs]          |  2 +-
 trunk/fs/exec.c | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index cc356aa60023..9fb7f3390aa7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a345b4ba2086bacc63884e5d72268415a97bcbff
+refs/heads/master: a64e715fc74b1a7dcc5944f848acc38b2c4d4ee2
diff --git a/trunk/fs/exec.c b/trunk/fs/exec.c
index a44b142fb460..54a0a557b678 100644
--- a/trunk/fs/exec.c
+++ b/trunk/fs/exec.c
@@ -173,8 +173,15 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
 		return NULL;
 
 	if (write) {
-		struct rlimit *rlim = current->signal->rlim;
 		unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
+		struct rlimit *rlim;
+
+		/*
+		 * We've historically supported up to 32 pages (ARG_MAX)
+		 * of argument strings even with small stacks
+		 */
+		if (size <= ARG_MAX)
+			return page;
 
 		/*
 		 * Limit to 1/4-th the stack size for the argv+env strings.
@@ -183,6 +190,7 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
 		 *  - the program will have a reasonable amount of stack left
 		 *    to work from.
 		 */
+		rlim = current->signal->rlim;
 		if (size > rlim[RLIMIT_STACK].rlim_cur / 4) {
 			put_page(page);
 			return NULL;