]> git.karo-electronics.de Git - mv-sheeva.git/commit
Btrfs: open_ctree() error handling can oops on fs_info
authorQinghuang Feng <qhfeng.kernel@gmail.com>
Wed, 21 Jan 2009 15:49:16 +0000 (10:49 -0500)
committerChris Mason <chris.mason@oracle.com>
Wed, 21 Jan 2009 15:49:16 +0000 (10:49 -0500)
commit7e6628544abad773222d8b177f738ac2db1859de
treeb1bdb87b850ed4639f45b1ca10d739f90e186646
parent86288a198d8e4e8411ff02f9ab848245e8f11257
Btrfs: open_ctree() error handling can oops on fs_info

a bug in open_ctree:

struct btrfs_root *open_ctree(..)
{
....
if (!extent_root || !tree_root || !fs_info ||
    !chunk_root || !dev_root || !csum_root) {
err = -ENOMEM;
goto fail;
//When code flow goes to "fail", fs_info may be NULL or uninitialized.
}
....

fail:
btrfs_close_devices(fs_info->fs_devices);// !
btrfs_mapping_tree_free(&fs_info->mapping_tree);// !

kfree(extent_root);
kfree(tree_root);
bdi_destroy(&fs_info->bdi);// !
...
)

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/disk-io.c