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authorTiger Yang <tiger.yang@oracle.com>2008-05-14 16:05:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-14 19:11:14 -0700
commit7e01c8e5420b6c7f9d85d34c15d8c7a15c9fc720 (patch)
tree9208cb180253bd98208ae3be34ffc10526d4f949 /fs/ext4
parent0c70814c311581a6c86198db4f982aa683c68fb8 (diff)
ext3/4: fix uninitialized bs in ext3/4_xattr_set_handle()
This fix the uninitialized bs when we try to replace a xattr entry in ibody with the new value which require more than free space. This situation only happens we format ext3/4 with inode size more than 128 and we have put xattr entries both in ibody and block. The consequences about this bug is we will lost the xattr block which pointed by i_file_acl with all xattr entires in it. We will alloc a new xattr block and put that large value entry in it. The old xattr block will become orphan block. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Cc: <linux-ext4@vger.kernel.org> Cc: Andreas Gruenbacher <agruen@suse.de> Acked-by: Andreas Dilger <adilger@sun.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/xattr.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 3fbc2c6c3d0e..ff08633f398e 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1009,6 +1009,11 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
i.value = NULL;
error = ext4_xattr_block_set(handle, inode, &i, &bs);
} else if (error == -ENOSPC) {
+ if (EXT4_I(inode)->i_file_acl && !bs.s.base) {
+ error = ext4_xattr_block_find(inode, &i, &bs);
+ if (error)
+ goto cleanup;
+ }
error = ext4_xattr_block_set(handle, inode, &i, &bs);
if (error)
goto cleanup;