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authorIonut Nicu <ioan.nicu.ext@nsn.com>2014-01-13 12:00:08 +0100
committerTom Rini <trini@ti.com>2014-01-20 10:09:40 -0500
commitb5bbac1a9b07016602559ff483df265fef6c1f83 (patch)
treef67b70c37cee3d77b05ea40691081d9c4d1ce60e /fs/ext4
parent470173274d9ceb18a7140ef93e20be6c2236e7d9 (diff)
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ext4fs: fix "invalid extent block" error
For files where we actually have extent indexes following an extent header (ext_block->eh_depth != 0), the do/while loop from ext4fs_get_extent_block() does not select the proper extent index structure. For example, if we have: ext_block->eh_depth = 1 ext_block->eh_entries = 1 fileblock = 0 index[0].ei_block = 0 the do/while loop will exit with i set to 0 and the ext4fs_get_extent_block() function will return 0, even if there was a valid extent index structure following the header. Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com> Signed-off-by: Mathias Rulf <mathias.rulf@nsn.com>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/ext4_common.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index c5e6542..02da75c 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -1430,7 +1430,7 @@ static struct ext4_extent_header *ext4fs_get_extent_block
i++;
if (i >= le16_to_cpu(ext_block->eh_entries))
break;
- } while (fileblock > le32_to_cpu(index[i].ei_block));
+ } while (fileblock >= le32_to_cpu(index[i].ei_block));
if (--i < 0)
return 0;