Currently we don't support xattrs with values stored out of line. Check
for that in ext4_xattr_check_names() to make sure we never work with
such xattrs since not all the code counts with that resulting is possible
weird corruption issues.
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
fs/ext4/xattr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 22d2ebcd1f09..f845cb7c6623 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -199,6 +199,8 @@ ext4_xattr_check_names(struct ext4_xattr_entry *entry, void *end,
}
while (!IS_LAST_ENTRY(entry)) {
+ if (entry->e_value_block != 0)
+ return -EFSCORRUPTED;
if (entry->e_value_size != 0 &&
(value_start + le16_to_cpu(entry->e_value_offs) <
(void *)e + sizeof(__u32) ||
--
2.6.6
--
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