| Message ID | 1398082392-5755-1-git-send-email-guihc.fnst@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index b4660c4..302f956 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3868,7 +3868,8 @@ static int btrfs_add_system_chunk(struct btrfs_root *root, u8 *ptr; array_size = btrfs_super_sys_array_size(super_copy); - if (array_size + item_size > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) + if (array_size + item_size + sizeof(disk_key) + > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) return -EFBIG; ptr = super_copy->sys_chunk_array + array_size;
For system chunk array, We copy a "disk_key" and an chunk item each time, so there should be enough space to hold both of them, not only the chunk item. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> --- fs/btrfs/volumes.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)