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authorLiu Bo <bo.li.liu@oracle.com>2014-06-08 19:04:13 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-30 20:14:03 -0700
commit6d2a63f3d1bbdf0bcd9201e2826a727261c0becc (patch)
treee345296751c2c55b9a8cbb5dea97dd60808d724a
parentefb57277b9df5bcdf99aabd8b4bafe9c4cbd7576 (diff)
Btrfs: use right type to get real comparison
commit cd857dd6bc2ae9ecea14e75a34e8a8fdc158e307 upstream. We want to make sure the point is still within the extent item, not to verify the memory it's pointing to. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/btrfs/backref.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 1e0439111d34..997a009f3dfd 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1424,7 +1424,7 @@ static int __get_extent_inline_ref(unsigned long *ptr, struct extent_buffer *eb,
*out_eiref = (struct btrfs_extent_inline_ref *)(ei + 1);
}
*ptr = (unsigned long)*out_eiref;
- if ((void *)*ptr >= (void *)ei + item_size)
+ if ((unsigned long)(*ptr) >= (unsigned long)ei + item_size)
return -ENOENT;
}