From: Zach Brown <zab@redhat.com>
Date: Wed, 14 Aug 2013 23:16:38 +0000 (-0700)
Subject: btrfs-progs: fix extent key endian bug in repair
X-Git-Tag: upstream/4.16.1~3174
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=47c072c2d85a786c5290e0bc5d2e3110bc806ca1;p=platform%2Fupstream%2Fbtrfs-progs.git

btrfs-progs: fix extent key endian bug in repair

Extents rebuilt from backrefs can have their objectid mangled.  The code
tried to build a disk_key by hand and got the swabbing backwards.

Signed-off-by: Zach Brown <zab@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

diff --git a/cmds-check.c b/cmds-check.c
index 2318aed..2d5162c 100644
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -3931,9 +3931,12 @@ static int record_extent(struct btrfs_trans_handle *trans,
 			bi = (struct btrfs_tree_block_info *)(ei + 1);
 			memset_extent_buffer(leaf, 0, (unsigned long)bi,
 					     sizeof(*bi));
-			memset(&copy_key, 0, sizeof(copy_key));
 
-			copy_key.objectid = le64_to_cpu(rec->info_objectid);
+			btrfs_set_disk_key_objectid(&copy_key,
+						    rec->info_objectid);
+			btrfs_set_disk_key_type(&copy_key, 0);
+			btrfs_set_disk_key_offset(&copy_key, 0);
+
 			btrfs_set_tree_block_level(leaf, bi, rec->info_level);
 			btrfs_set_tree_block_key(leaf, bi, &copy_key);