X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fexec.c;h=54a0a557b6781ecf379015bbd60dc6f3fd37c176;hb=10f32065a25d22bf7894fa39ff2ce8492922086a;hp=a44b142fb4607baee2d832b1056103b5d157e5a7;hpb=b9e222904ce92e1b277f2b85411d1eb6bfe27410;p=linux-2.6-omap-h63xx.git

diff --git a/fs/exec.c b/fs/exec.c
index a44b142fb46..54a0a557b67 100644
--- a/fs/exec.c
+++ b/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;