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author | Josef Bacik <josef@redhat.com> | 2010-03-19 23:49:55 +0300 |
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committer | Chris Mason <chris.mason@oracle.com> | 2010-03-31 05:19:09 +0400 |
commit | 1b1d1f6625e517a08640ddb4b8f8a0e025243fe3 (patch) | |
tree | d662fe7e7d9ddec1214982b3dcd955228e18562f /fs/jffs2/jffs2_fs_sb.h | |
parent | 6cf8bfbf5e88edfb09a2bf0631a067060f534592 (diff) | |
download | linux-1b1d1f6625e517a08640ddb4b8f8a0e025243fe3.tar.xz |
Btrfs: fail to mount if we have problems reading the block groups
We don't actually check the return value of btrfs_read_block_groups, so we can
possibly succeed to mount, but then fail to say read the superblock xattr for
selinux which will cause the vfs code to deactivate the super.
This is a problem because in find_free_extent we just assume that we
will find the right space_info for the allocation we want. But if we
failed to read the block groups, we won't have setup any space_info's,
and we'll hit a NULL pointer deref in find_free_extent.
This patch fixes that problem by checking the return value of
btrfs_read_block_groups, and failing out properly. I've also added a
check in find_free_extent so if for some reason we don't find an
appropriate space_info, we just return -ENOSPC.
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/jffs2/jffs2_fs_sb.h')
0 files changed, 0 insertions, 0 deletions