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-rw-r--r--pkg/sentry/vfs/vfs.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/vfs/vfs.go b/pkg/sentry/vfs/vfs.go
index 58c7ad778..522e27475 100644
--- a/pkg/sentry/vfs/vfs.go
+++ b/pkg/sentry/vfs/vfs.go
@@ -123,6 +123,9 @@ type VirtualFilesystem struct {
// Init initializes a new VirtualFilesystem with no mounts or FilesystemTypes.
func (vfs *VirtualFilesystem) Init() error {
+ if vfs.mountpoints != nil {
+ panic("VFS already initialized")
+ }
vfs.mountpoints = make(map[*Dentry]map[*Mount]struct{})
vfs.devices = make(map[devTuple]*registeredDevice)
vfs.anonBlockDevMinorNext = 1