diff options
Diffstat (limited to 'fs/btrfs/block-rsv.c')
| -rw-r--r-- | fs/btrfs/block-rsv.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/block-rsv.c b/fs/btrfs/block-rsv.c index bc920afe23bf..04a6226e0388 100644 --- a/fs/btrfs/block-rsv.c +++ b/fs/btrfs/block-rsv.c @@ -426,6 +426,14 @@ void btrfs_init_global_block_rsv(struct btrfs_fs_info *fs_info) fs_info->delayed_block_rsv.space_info = space_info; fs_info->delayed_refs_rsv.space_info = space_info; + /* + * Our various recovery options can leave us with NULL roots, so check + * here and just bail before we go dereferencing NULLs everywhere. + */ + if (!fs_info->extent_root || !fs_info->csum_root || + !fs_info->dev_root || !fs_info->chunk_root || !fs_info->tree_root) + return; + fs_info->extent_root->block_rsv = &fs_info->delayed_refs_rsv; fs_info->csum_root->block_rsv = &fs_info->delayed_refs_rsv; fs_info->dev_root->block_rsv = &fs_info->global_block_rsv; |