diff options
author | Miao Xie <miaox@cn.fujitsu.com> | 2010-02-02 08:46:44 +0000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-13 13:20:11 -0700 |
commit | 4c324840d6c06406e1f05e12952c050c4e84ce95 (patch) | |
tree | 9ada20732625bc8b1fbfa6a9fda5e58f3290e5c0 | |
parent | caf32f2c7d0f78eead8cb38a86dfa1bff6ded600 (diff) |
Btrfs: remove BUG_ON() due to mounting bad filesystem
commit d7ce5843bb28ada6845ab2ae8510ba3f12d33154 upstream.
Mounting a bad filesystem caused a BUG_ON(). The following is steps to
reproduce it.
# mkfs.btrfs /dev/sda2
# mount /dev/sda2 /mnt
# mkfs.btrfs /dev/sda1 /dev/sda2
(the program says that /dev/sda2 was mounted, and then exits. )
# umount /mnt
# mount /dev/sda1 /mnt
At the third step, mkfs.btrfs exited in the way of make filesystem. So the
initialization of the filesystem didn't finish. So the filesystem was bad, and
it caused BUG_ON() when mounting it. But BUG_ON() should be called by the wrong
code, not user's operation, so I think it is a bug of btrfs.
This patch fixes it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r-- | fs/btrfs/disk-io.c | 7 | ||||
-rw-r--r-- | fs/btrfs/relocation.c | 3 |
2 files changed, 8 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 87b25543d7d..2b59201b955 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1982,7 +1982,12 @@ struct btrfs_root *open_ctree(struct super_block *sb, if (!(sb->s_flags & MS_RDONLY)) { ret = btrfs_recover_relocation(tree_root); - BUG_ON(ret); + if (ret < 0) { + printk(KERN_WARNING + "btrfs: failed to recover relocation\n"); + err = -EINVAL; + goto fail_trans_kthread; + } } location.objectid = BTRFS_FS_TREE_OBJECTID; diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index ed3e4a2ec2c..ab7ab531874 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3764,7 +3764,8 @@ out: BTRFS_DATA_RELOC_TREE_OBJECTID); if (IS_ERR(fs_root)) err = PTR_ERR(fs_root); - btrfs_orphan_cleanup(fs_root); + else + btrfs_orphan_cleanup(fs_root); } return err; } |