提交 29cc83f6 编写于 作者: L Liu Bo 提交者: Chris Mason

Btrfs: fix NULL pointer crash of deleting a seed device

Same as normal devices, seed devices should be initialized with
fs_info->dev_root as well, otherwise we'll get a NULL pointer crash.

Cc: Chris Murphy <lists@colorremedies.com>
Reported-by: NChris Murphy <lists@colorremedies.com>
Signed-off-by: NLiu Bo <bo.li.liu@oracle.com>
Signed-off-by: NChris Mason <clm@fb.com>
上级 f017f15f
......@@ -6146,10 +6146,14 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
mutex_lock(&fs_devices->device_list_mutex);
list_for_each_entry(device, &fs_devices->devices, dev_list)
device->dev_root = fs_info->dev_root;
mutex_unlock(&fs_devices->device_list_mutex);
while (fs_devices) {
mutex_lock(&fs_devices->device_list_mutex);
list_for_each_entry(device, &fs_devices->devices, dev_list)
device->dev_root = fs_info->dev_root;
mutex_unlock(&fs_devices->device_list_mutex);
fs_devices = fs_devices->seed;
}
}
static void __btrfs_reset_dev_stats(struct btrfs_device *dev)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册