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-rw-r--r--fs/btrfs/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f6e111984ce2..a7b69deb6d70 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2226,6 +2226,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
vol = memdup_user((void __user *)arg, sizeof(*vol));
if (IS_ERR(vol))
return PTR_ERR(vol);
+ vol->name[BTRFS_PATH_NAME_MAX] = '\0';
switch (cmd) {
case BTRFS_IOC_SCAN_DEV: