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| author | Ionut Nicu <ioan.nicu.ext@nsn.com> | 2014-01-13 12:00:08 +0100 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-01-20 10:09:40 -0500 |
| commit | b5bbac1a9b07016602559ff483df265fef6c1f83 (patch) | |
| tree | f67b70c37cee3d77b05ea40691081d9c4d1ce60e /fs/ext4 | |
| parent | 470173274d9ceb18a7140ef93e20be6c2236e7d9 (diff) | |
| download | u-boot-imx-b5bbac1a9b07016602559ff483df265fef6c1f83.zip u-boot-imx-b5bbac1a9b07016602559ff483df265fef6c1f83.tar.gz u-boot-imx-b5bbac1a9b07016602559ff483df265fef6c1f83.tar.bz2 | |
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.c | 2 |
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; |