File fix-nilfs2-probe-function.patch of Package parted

From 2147402b83b27a35011cad032d0519c4a0672280 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Sat, 25 Jun 2011 08:49:58 +0200
Subject: [PATCH] libparted: fix a bug in the nilfs2 probe function

* libparted/fs/nilfs2/nilfs2.c (nilfs2_probe): Reject this partition
if we get a negative sb2 offset.  Passing a negative offset to
ped_geometry_read_alloc would evoke a failed assertion.
Bug introduced by 2010-07-09 commit d463e7de.
* NEWS: (Bug fixes): Mention it.
Reported by Daniel Fandrich in
http://thread.gmane.org/gmane.comp.gnu.parted.bugs/10466/focus=10472
---
 NEWS                         |    3 +++
 libparted/fs/nilfs2/nilfs2.c |    5 +++--
 2 files changed, 6 insertions(+), 2 deletions(-)

Index: parted-2.4/libparted/fs/nilfs2/nilfs2.c
===================================================================
--- parted-2.4.orig/libparted/fs/nilfs2/nilfs2.c
+++ parted-2.4/libparted/fs/nilfs2/nilfs2.c
@@ -108,13 +108,14 @@ nilfs2_probe (PedGeometry* geom)
 	struct nilfs2_super_block *sb = NULL;
 	struct nilfs2_super_block *sb2 = NULL;
 	PedSector length = geom->length;
-	PedSector sb2off;
 
 	/* ignore if sector size is not 512bytes for now  */
 	if (geom->dev->sector_size != PED_SECTOR_SIZE_DEFAULT)
 		return NULL;
 
-	sb2off = NILFS_SB2_OFFSET(length);
+	PedSector sb2off = NILFS_SB2_OFFSET(length);
+	if (sb2off <= 2)
+		return NULL;
 
 	if (ped_geometry_read_alloc(geom, &sb_v, 2, 1))
 		sb = sb_v;