linux-kernel - [ 158/175] module: Remove module size limit

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Message-Id: <20120330194857.937774211@linuxfoundation.org>
Date:	Fri, 30 Mar 2012 12:51:03 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Tim Abbott <tim.abbott@...cle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: [ 158/175] module: Remove module size limit

3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sasha Levin <levinsasha928@...il.com>

commit f946eeb9313ff1470758e171a60fe7438a2ded3f upstream.

Module size was limited to 64MB, this was legacy limitation due to vmalloc()
which was removed a while ago.

Limiting module size to 64MB is both pointless and affects real world use
cases.

Cc: Tim Abbott <tim.abbott@...cle.com>
Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 kernel/module.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2380,8 +2380,7 @@ static int copy_and_check(struct load_in
 		return -ENOEXEC;
 
 	/* Suck in entire file: we'll want most of it. */
-	/* vmalloc barfs on "unusual" numbers.  Check here */
-	if (len > 64 * 1024 * 1024 || (hdr = vmalloc(len)) == NULL)
+	if ((hdr = vmalloc(len)) == NULL)
 		return -ENOMEM;
 
 	if (copy_from_user(hdr, umod, len) != 0) {


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