Merge 3e9b8ecb (automated)

69 files changed, 286 insertions, 209 deletions

diff --git a/pkg/sentry/fs/anon/anon.go b/pkg/sentry/fs/anon/anon.go
index 28bd0998f..7323c7222 100644
--- a/pkg/sentry/fs/anon/anon.go
+++ b/pkg/sentry/fs/anon/anon.go
@@ -33,7 +33,7 @@ func NewInode(ctx context.Context) *fs.Inode {
 			User: fs.PermMask{Read: true, Write: true},
 		}, linux.ANON_INODE_FS_MAGIC),
 	}
-	return fs.NewInode(iops, fs.NewPseudoMountSource(), fs.StableAttr{
+	return fs.NewInode(ctx, iops, fs.NewPseudoMountSource(ctx), fs.StableAttr{
 		Type:      fs.Anonymous,
 		DeviceID:  PseudoDevice.DeviceID(),
 		InodeID:   PseudoDevice.NextIno(),
diff --git a/pkg/sentry/fs/ashmem/area.go b/pkg/sentry/fs/ashmem/area.go
index cae3e4dda..e1971f91c 100644
--- a/pkg/sentry/fs/ashmem/area.go
+++ b/pkg/sentry/fs/ashmem/area.go
@@ -116,8 +116,8 @@ func (a *Area) ConfigureMMap(ctx context.Context, file *fs.File, opts *memmap.MM
 
 	if a.tmpfsFile == nil {
 		tmpfsInodeOps := tmpfs.NewInMemoryFile(ctx, usage.Tmpfs, fs.UnstableAttr{})
-		tmpfsInode := fs.NewInode(tmpfsInodeOps, fs.NewPseudoMountSource(), fs.StableAttr{})
-		dirent := fs.NewDirent(tmpfsInode, namePrefix+"/"+a.name)
+		tmpfsInode := fs.NewInode(ctx, tmpfsInodeOps, fs.NewPseudoMountSource(ctx), fs.StableAttr{})
+		dirent := fs.NewDirent(ctx, tmpfsInode, namePrefix+"/"+a.name)
 		tmpfsFile, err := tmpfsInode.GetFile(ctx, dirent, fs.FileFlags{Read: true, Write: true})
 		// Drop the extra reference on the Dirent.
 		dirent.DecRef()
diff --git a/pkg/sentry/fs/dev/dev.go b/pkg/sentry/fs/dev/dev.go
index 317be246c..fb6c30ff0 100644
--- a/pkg/sentry/fs/dev/dev.go
+++ b/pkg/sentry/fs/dev/dev.go
@@ -40,8 +40,8 @@ const (
 	urandomDevMinor uint32 = 9
 )
 
-func newCharacterDevice(iops fs.InodeOperations, msrc *fs.MountSource) *fs.Inode {
-	return fs.NewInode(iops, msrc, fs.StableAttr{
+func newCharacterDevice(ctx context.Context, iops fs.InodeOperations, msrc *fs.MountSource) *fs.Inode {
+	return fs.NewInode(ctx, iops, msrc, fs.StableAttr{
 		DeviceID:  devDevice.DeviceID(),
 		InodeID:   devDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -49,8 +49,8 @@ func newCharacterDevice(iops fs.InodeOperations, msrc *fs.MountSource) *fs.Inode
 	})
 }
 
-func newMemDevice(iops fs.InodeOperations, msrc *fs.MountSource, minor uint32) *fs.Inode {
-	return fs.NewInode(iops, msrc, fs.StableAttr{
+func newMemDevice(ctx context.Context, iops fs.InodeOperations, msrc *fs.MountSource, minor uint32) *fs.Inode {
+	return fs.NewInode(ctx, iops, msrc, fs.StableAttr{
 		DeviceID:        devDevice.DeviceID(),
 		InodeID:         devDevice.NextIno(),
 		BlockSize:       usermem.PageSize,
@@ -62,7 +62,7 @@ func newMemDevice(iops fs.InodeOperations, msrc *fs.MountSource, minor uint32) *
 
 func newDirectory(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	iops := ramfs.NewDir(ctx, nil, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return fs.NewInode(iops, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, iops, msrc, fs.StableAttr{
 		DeviceID:  devDevice.DeviceID(),
 		InodeID:   devDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -72,7 +72,7 @@ func newDirectory(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 
 func newSymlink(ctx context.Context, target string, msrc *fs.MountSource) *fs.Inode {
 	iops := ramfs.NewSymlink(ctx, fs.RootOwner, target)
-	return fs.NewInode(iops, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, iops, msrc, fs.StableAttr{
 		DeviceID:  devDevice.DeviceID(),
 		InodeID:   devDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -88,17 +88,17 @@ func New(ctx context.Context, msrc *fs.MountSource, binderEnabled bool, ashmemEn
 		"stdout": newSymlink(ctx, "/proc/self/fd/1", msrc),
 		"stderr": newSymlink(ctx, "/proc/self/fd/2", msrc),
 
-		"null": newMemDevice(newNullDevice(ctx, fs.RootOwner, 0666), msrc, nullDevMinor),
-		"zero": newMemDevice(newZeroDevice(ctx, fs.RootOwner, 0666), msrc, zeroDevMinor),
-		"full": newMemDevice(newFullDevice(ctx, fs.RootOwner, 0666), msrc, fullDevMinor),
+		"null": newMemDevice(ctx, newNullDevice(ctx, fs.RootOwner, 0666), msrc, nullDevMinor),
+		"zero": newMemDevice(ctx, newZeroDevice(ctx, fs.RootOwner, 0666), msrc, zeroDevMinor),
+		"full": newMemDevice(ctx, newFullDevice(ctx, fs.RootOwner, 0666), msrc, fullDevMinor),
 
 		// This is not as good as /dev/random in linux because go
 		// runtime uses sys_random and /dev/urandom internally.
 		// According to 'man 4 random', this will be sufficient unless
 		// application uses this to generate long-lived GPG/SSL/SSH
 		// keys.
-		"random":  newMemDevice(newRandomDevice(ctx, fs.RootOwner, 0444), msrc, randomDevMinor),
-		"urandom": newMemDevice(newRandomDevice(ctx, fs.RootOwner, 0444), msrc, urandomDevMinor),
+		"random":  newMemDevice(ctx, newRandomDevice(ctx, fs.RootOwner, 0444), msrc, randomDevMinor),
+		"urandom": newMemDevice(ctx, newRandomDevice(ctx, fs.RootOwner, 0444), msrc, urandomDevMinor),
 
 		"shm": tmpfs.NewDir(ctx, nil, fs.RootOwner, fs.FilePermsFromMode(0777), msrc),
 
@@ -120,16 +120,16 @@ func New(ctx context.Context, msrc *fs.MountSource, binderEnabled bool, ashmemEn
 
 	if binderEnabled {
 		binder := binder.NewDevice(ctx, fs.RootOwner, fs.FilePermsFromMode(0666))
-		contents["binder"] = newCharacterDevice(binder, msrc)
+		contents["binder"] = newCharacterDevice(ctx, binder, msrc)
 	}
 
 	if ashmemEnabled {
 		ashmem := ashmem.NewDevice(ctx, fs.RootOwner, fs.FilePermsFromMode(0666))
-		contents["ashmem"] = newCharacterDevice(ashmem, msrc)
+		contents["ashmem"] = newCharacterDevice(ctx, ashmem, msrc)
 	}
 
 	iops := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return fs.NewInode(iops, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, iops, msrc, fs.StableAttr{
 		DeviceID:  devDevice.DeviceID(),
 		InodeID:   devDevice.NextIno(),
 		BlockSize: usermem.PageSize,
diff --git a/pkg/sentry/fs/dev/fs.go b/pkg/sentry/fs/dev/fs.go
index 9ea6e91e9..6dbc8c382 100644
--- a/pkg/sentry/fs/dev/fs.go
+++ b/pkg/sentry/fs/dev/fs.go
@@ -95,5 +95,5 @@ func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSou
 	}
 
 	// Construct the devtmpfs root.
-	return New(ctx, fs.NewNonCachingMountSource(f, flags), binderEnabled, ashmemEnabled), nil
+	return New(ctx, fs.NewNonCachingMountSource(ctx, f, flags), binderEnabled, ashmemEnabled), nil
 }
diff --git a/pkg/sentry/fs/dirent.go b/pkg/sentry/fs/dirent.go
index 9694d915d..ca417d2bc 100644
--- a/pkg/sentry/fs/dirent.go
+++ b/pkg/sentry/fs/dirent.go
@@ -206,7 +206,7 @@ type Dirent struct {
 
 // NewDirent returns a new root Dirent, taking the caller's reference on inode. The caller
 // holds the only reference to the Dirent. Parents may call hashChild to parent this Dirent.
-func NewDirent(inode *Inode, name string) *Dirent {
+func NewDirent(ctx context.Context, inode *Inode, name string) *Dirent {
 	d := newDirent(inode, name)
 	allDirents.add(d)
 	d.userVisible = true
@@ -1068,7 +1068,7 @@ func (d *Dirent) mount(ctx context.Context, inode *Inode) (newChild *Dirent, err
 	//
 	// Note that NewDirent returns with one reference taken; the reference
 	// is donated to the caller as the mount reference.
-	replacement := NewDirent(inode, d.name)
+	replacement := NewDirent(ctx, inode, d.name)
 	replacement.mounted = true
 
 	weakRef, ok := d.parent.hashChild(replacement)
diff --git a/pkg/sentry/fs/gofer/path.go b/pkg/sentry/fs/gofer/path.go
index 24f6cc093..b91386909 100644
--- a/pkg/sentry/fs/gofer/path.go
+++ b/pkg/sentry/fs/gofer/path.go
@@ -73,7 +73,7 @@ func (i *inodeOperations) Lookup(ctx context.Context, dir *fs.Inode, name string
 	sattr, node := newInodeOperations(ctx, i.fileState.s, newFile, qids[0], mask, p9attr, false)
 
 	// Construct a positive Dirent.
-	return fs.NewDirent(fs.NewInode(node, dir.MountSource, sattr), name), nil
+	return fs.NewDirent(ctx, fs.NewInode(ctx, node, dir.MountSource, sattr), name), nil
 }
 
 // Creates a new Inode at name and returns its File based on the session's cache policy.
@@ -141,7 +141,7 @@ func (i *inodeOperations) Create(ctx context.Context, dir *fs.Inode, name string
 	sattr, iops := newInodeOperations(ctx, i.fileState.s, unopened, qid, mask, p9attr, false)
 
 	// Construct the positive Dirent.
-	d := fs.NewDirent(fs.NewInode(iops, dir.MountSource, sattr), name)
+	d := fs.NewDirent(ctx, fs.NewInode(ctx, iops, dir.MountSource, sattr), name)
 	defer d.DecRef()
 
 	// Construct the new file, caching the handles if allowed.
@@ -277,7 +277,7 @@ func (i *inodeOperations) Bind(ctx context.Context, dir *fs.Inode, name string,
 	sattr, iops := newInodeOperations(ctx, i.fileState.s, unopened, qid, mask, attr, true)
 
 	// Construct the positive Dirent.
-	childDir := fs.NewDirent(fs.NewInode(iops, dir.MountSource, sattr), name)
+	childDir := fs.NewDirent(ctx, fs.NewInode(ctx, iops, dir.MountSource, sattr), name)
 	i.session().endpoints.add(key, childDir, ep)
 	return childDir, nil
 }
diff --git a/pkg/sentry/fs/gofer/session.go b/pkg/sentry/fs/gofer/session.go
index 1763c8692..7ad0d8bc5 100644
--- a/pkg/sentry/fs/gofer/session.go
+++ b/pkg/sentry/fs/gofer/session.go
@@ -251,7 +251,7 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF
 	}
 
 	// Construct the MountSource with the session and superBlockFlags.
-	m := fs.NewMountSource(s, filesystem, superBlockFlags)
+	m := fs.NewMountSource(ctx, s, filesystem, superBlockFlags)
 
 	// Given that gofer files can consume host FDs, restrict the number
 	// of files that can be held by the cache.
@@ -286,7 +286,7 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF
 	}
 
 	sattr, iops := newInodeOperations(ctx, s, s.attach, qid, valid, attr, false)
-	return fs.NewInode(iops, m, sattr), nil
+	return fs.NewInode(ctx, iops, m, sattr), nil
 }
 
 // newEndpointMaps creates a new endpointMaps.
diff --git a/pkg/sentry/fs/gofer/socket.go b/pkg/sentry/fs/gofer/socket.go
index 6a9994264..a45a8f36c 100644
--- a/pkg/sentry/fs/gofer/socket.go
+++ b/pkg/sentry/fs/gofer/socket.go
@@ -18,6 +18,7 @@ import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/p9"
+	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/sentry/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/host"
 	"gvisor.dev/gvisor/pkg/sentry/socket/unix/transport"
@@ -75,7 +76,7 @@ func sockTypeToP9(t linux.SockType) (p9.ConnectFlags, bool) {
 }
 
 // BidirectionalConnect implements ConnectableEndpoint.BidirectionalConnect.
-func (e *endpoint) BidirectionalConnect(ce transport.ConnectingEndpoint, returnConnect func(transport.Receiver, transport.ConnectedEndpoint)) *syserr.Error {
+func (e *endpoint) BidirectionalConnect(ctx context.Context, ce transport.ConnectingEndpoint, returnConnect func(transport.Receiver, transport.ConnectedEndpoint)) *syserr.Error {
 	cf, ok := sockTypeToP9(ce.Type())
 	if !ok {
 		return syserr.ErrConnectionRefused
@@ -100,7 +101,7 @@ func (e *endpoint) BidirectionalConnect(ce transport.ConnectingEndpoint, returnC
 		return syserr.ErrConnectionRefused
 	}
 
-	c, serr := host.NewConnectedEndpoint(hostFile, ce.WaiterQueue(), e.path)
+	c, serr := host.NewConnectedEndpoint(ctx, hostFile, ce.WaiterQueue(), e.path)
 	if serr != nil {
 		ce.Unlock()
 		log.Warningf("Gofer returned invalid host socket for BidirectionalConnect; file %+v flags %+v: %v", e.file, cf, serr)
@@ -116,13 +117,13 @@ func (e *endpoint) BidirectionalConnect(ce transport.ConnectingEndpoint, returnC
 
 // UnidirectionalConnect implements
 // transport.BoundEndpoint.UnidirectionalConnect.
-func (e *endpoint) UnidirectionalConnect() (transport.ConnectedEndpoint, *syserr.Error) {
+func (e *endpoint) UnidirectionalConnect(ctx context.Context) (transport.ConnectedEndpoint, *syserr.Error) {
 	hostFile, err := e.file.Connect(p9.DgramSocket)
 	if err != nil {
 		return nil, syserr.ErrConnectionRefused
 	}
 
-	c, serr := host.NewConnectedEndpoint(hostFile, &waiter.Queue{}, e.path)
+	c, serr := host.NewConnectedEndpoint(ctx, hostFile, &waiter.Queue{}, e.path)
 	if serr != nil {
 		log.Warningf("Gofer returned invalid host socket for UnidirectionalConnect; file %+v: %v", e.file, serr)
 		return nil, serr
diff --git a/pkg/sentry/fs/host/file.go b/pkg/sentry/fs/host/file.go
index 45d5c8695..bd665a6b1 100644
--- a/pkg/sentry/fs/host/file.go
+++ b/pkg/sentry/fs/host/file.go
@@ -109,7 +109,7 @@ func newFileFromDonatedFD(ctx context.Context, donated int, mounter fs.FileOwner
 		iops := inode.InodeOperations.(*inodeOperations)
 
 		name := fmt.Sprintf("host:[%d]", inode.StableAttr.InodeID)
-		dirent := fs.NewDirent(inode, name)
+		dirent := fs.NewDirent(ctx, inode, name)
 		defer dirent.DecRef()
 
 		if isTTY {
diff --git a/pkg/sentry/fs/host/fs.go b/pkg/sentry/fs/host/fs.go
index 914d95d27..68d2697c0 100644
--- a/pkg/sentry/fs/host/fs.go
+++ b/pkg/sentry/fs/host/fs.go
@@ -262,7 +262,7 @@ func childDentAttrs(ctx context.Context, d *fs.Dirent) map[string]fs.DentAttr {
 // newMountSource constructs a new host fs.MountSource
 // relative to a root path. The root should match the mount point.
 func newMountSource(ctx context.Context, root string, mounter fs.FileOwner, filesystem fs.Filesystem, flags fs.MountSourceFlags, dontTranslateOwnership bool) *fs.MountSource {
-	return fs.NewMountSource(&superOperations{
+	return fs.NewMountSource(ctx, &superOperations{
 		root:                   root,
 		inodeMappings:          make(map[uint64]string),
 		mounter:                mounter,
diff --git a/pkg/sentry/fs/host/inode.go b/pkg/sentry/fs/host/inode.go
index ca352a8c2..679d8321a 100644
--- a/pkg/sentry/fs/host/inode.go
+++ b/pkg/sentry/fs/host/inode.go
@@ -205,7 +205,7 @@ func newInode(ctx context.Context, msrc *fs.MountSource, fd int, saveable bool,
 	}
 
 	// Return the fs.Inode.
-	return fs.NewInode(iops, msrc, fileState.sattr), nil
+	return fs.NewInode(ctx, iops, msrc, fileState.sattr), nil
 }
 
 // Mappable implements fs.InodeOperations.Mappable.
@@ -245,7 +245,7 @@ func (i *inodeOperations) Lookup(ctx context.Context, dir *fs.Inode, name string
 	}
 
 	// Return the fs.Dirent.
-	return fs.NewDirent(inode, name), nil
+	return fs.NewDirent(ctx, inode, name), nil
 }
 
 // Create implements fs.InodeOperations.Create.
@@ -265,7 +265,7 @@ func (i *inodeOperations) Create(ctx context.Context, dir *fs.Inode, name string
 		return nil, err
 	}
 
-	d := fs.NewDirent(inode, name)
+	d := fs.NewDirent(ctx, inode, name)
 	defer d.DecRef()
 	return inode.GetFile(ctx, d, flags)
 }
diff --git a/pkg/sentry/fs/host/socket.go b/pkg/sentry/fs/host/socket.go
index a40890b41..7fedc88bc 100644
--- a/pkg/sentry/fs/host/socket.go
+++ b/pkg/sentry/fs/host/socket.go
@@ -118,7 +118,7 @@ func (c *ConnectedEndpoint) init() *syserr.Error {
 // The caller is responsible for calling Init(). Additionaly, Release needs to
 // be called twice because ConnectedEndpoint is both a transport.Receiver and
 // transport.ConnectedEndpoint.
-func NewConnectedEndpoint(file *fd.FD, queue *waiter.Queue, path string) (*ConnectedEndpoint, *syserr.Error) {
+func NewConnectedEndpoint(ctx context.Context, file *fd.FD, queue *waiter.Queue, path string) (*ConnectedEndpoint, *syserr.Error) {
 	e := ConnectedEndpoint{
 		path:  path,
 		queue: queue,
@@ -151,7 +151,7 @@ func (c *ConnectedEndpoint) Init() {
 func NewSocketWithDirent(ctx context.Context, d *fs.Dirent, f *fd.FD, flags fs.FileFlags) (*fs.File, error) {
 	f2 := fd.New(f.FD())
 	var q waiter.Queue
-	e, err := NewConnectedEndpoint(f2, &q, "" /* path */)
+	e, err := NewConnectedEndpoint(ctx, f2, &q, "" /* path */)
 	if err != nil {
 		f2.Release()
 		return nil, err.ToError()
@@ -162,7 +162,7 @@ func NewSocketWithDirent(ctx context.Context, d *fs.Dirent, f *fd.FD, flags fs.F
 
 	e.Init()
 
-	ep := transport.NewExternal(e.stype, uniqueid.GlobalProviderFromContext(ctx), &q, e, e)
+	ep := transport.NewExternal(ctx, e.stype, uniqueid.GlobalProviderFromContext(ctx), &q, e, e)
 
 	return unixsocket.NewWithDirent(ctx, d, ep, e.stype, flags), nil
 }
@@ -181,7 +181,7 @@ func newSocket(ctx context.Context, orgfd int, saveable bool) (*fs.File, error)
 	}
 	f := fd.New(ownedfd)
 	var q waiter.Queue
-	e, err := NewConnectedEndpoint(f, &q, "" /* path */)
+	e, err := NewConnectedEndpoint(ctx, f, &q, "" /* path */)
 	if err != nil {
 		if saveable {
 			f.Close()
@@ -194,7 +194,7 @@ func newSocket(ctx context.Context, orgfd int, saveable bool) (*fs.File, error)
 	e.srfd = srfd
 	e.Init()
 
-	ep := transport.NewExternal(e.stype, uniqueid.GlobalProviderFromContext(ctx), &q, e, e)
+	ep := transport.NewExternal(ctx, e.stype, uniqueid.GlobalProviderFromContext(ctx), &q, e, e)
 
 	return unixsocket.New(ctx, ep, e.stype), nil
 }
diff --git a/pkg/sentry/fs/inode.go b/pkg/sentry/fs/inode.go
index a19744ab1..a889586aa 100644
--- a/pkg/sentry/fs/inode.go
+++ b/pkg/sentry/fs/inode.go
@@ -76,7 +76,7 @@ type LockCtx struct {
 // NewInode constructs an Inode from InodeOperations, a MountSource, and stable attributes.
 //
 // NewInode takes a reference on msrc.
-func NewInode(iops InodeOperations, msrc *MountSource, sattr StableAttr) *Inode {
+func NewInode(ctx context.Context, iops InodeOperations, msrc *MountSource, sattr StableAttr) *Inode {
 	msrc.IncRef()
 	return &Inode{
 		InodeOperations: iops,
diff --git a/pkg/sentry/fs/inode_overlay.go b/pkg/sentry/fs/inode_overlay.go
index 805187f60..57b8b14e3 100644
--- a/pkg/sentry/fs/inode_overlay.go
+++ b/pkg/sentry/fs/inode_overlay.go
@@ -111,7 +111,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
 				parent.copyMu.RUnlock()
 				return nil, false, err
 			}
-			d, err := NewDirent(newOverlayInode(ctx, entry, inode.MountSource), name), nil
+			d, err := NewDirent(ctx, newOverlayInode(ctx, entry, inode.MountSource), name), nil
 			parent.copyMu.RUnlock()
 			return d, true, err
 		}
@@ -201,7 +201,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
 		parent.copyMu.RUnlock()
 		return nil, false, err
 	}
-	d, err := NewDirent(newOverlayInode(ctx, entry, inode.MountSource), name), nil
+	d, err := NewDirent(ctx, newOverlayInode(ctx, entry, inode.MountSource), name), nil
 	parent.copyMu.RUnlock()
 	return d, upperInode != nil, err
 }
@@ -245,7 +245,7 @@ func overlayCreate(ctx context.Context, o *overlayEntry, parent *Dirent, name st
 	// overlay file.
 	overlayInode := newOverlayInode(ctx, entry, parent.Inode.MountSource)
 	// d will own the inode reference.
-	overlayDirent := NewDirent(overlayInode, name)
+	overlayDirent := NewDirent(ctx, overlayInode, name)
 	// The overlay file created below with NewFile will take a reference on
 	// the overlayDirent, and it should be the only thing holding a
 	// reference at the time of creation, so we must drop this reference.
@@ -422,7 +422,7 @@ func overlayBind(ctx context.Context, o *overlayEntry, parent *Dirent, name stri
 		inode.DecRef()
 		return nil, err
 	}
-	return NewDirent(newOverlayInode(ctx, entry, inode.MountSource), name), nil
+	return NewDirent(ctx, newOverlayInode(ctx, entry, inode.MountSource), name), nil
 }
 
 func overlayBoundEndpoint(o *overlayEntry, path string) transport.BoundEndpoint {
@@ -648,13 +648,13 @@ func NewTestOverlayDir(ctx context.Context, upper, lower *Inode, revalidate bool
 	fs := &overlayFilesystem{}
 	var upperMsrc *MountSource
 	if revalidate {
-		upperMsrc = NewRevalidatingMountSource(fs, MountSourceFlags{})
+		upperMsrc = NewRevalidatingMountSource(ctx, fs, MountSourceFlags{})
 	} else {
-		upperMsrc = NewNonCachingMountSource(fs, MountSourceFlags{})
+		upperMsrc = NewNonCachingMountSource(ctx, fs, MountSourceFlags{})
 	}
-	msrc := NewMountSource(&overlayMountSourceOperations{
+	msrc := NewMountSource(ctx, &overlayMountSourceOperations{
 		upper: upperMsrc,
-		lower: NewNonCachingMountSource(fs, MountSourceFlags{}),
+		lower: NewNonCachingMountSource(ctx, fs, MountSourceFlags{}),
 	}, fs, MountSourceFlags{})
 	overlay := &overlayEntry{
 		upper: upper,
diff --git a/pkg/sentry/fs/mock.go b/pkg/sentry/fs/mock.go
index c4e12acfe..b3c4ad80b 100644
--- a/pkg/sentry/fs/mock.go
+++ b/pkg/sentry/fs/mock.go
@@ -34,7 +34,7 @@ type MockInodeOperations struct {
 
 // NewMockInode returns a mock *Inode using MockInodeOperations.
 func NewMockInode(ctx context.Context, msrc *MountSource, sattr StableAttr) *Inode {
-	return NewInode(NewMockInodeOperations(ctx), msrc, sattr)
+	return NewInode(ctx, NewMockInodeOperations(ctx), msrc, sattr)
 }
 
 // NewMockInodeOperations returns a *MockInodeOperations.
@@ -93,7 +93,7 @@ func (n *MockInodeOperations) IsVirtual() bool {
 // Lookup implements fs.InodeOperations.Lookup.
 func (n *MockInodeOperations) Lookup(ctx context.Context, dir *Inode, p string) (*Dirent, error) {
 	n.walkCalled = true
-	return NewDirent(NewInode(&MockInodeOperations{}, dir.MountSource, StableAttr{}), p), nil
+	return NewDirent(ctx, NewInode(ctx, &MockInodeOperations{}, dir.MountSource, StableAttr{}), p), nil
 }
 
 // SetPermissions implements fs.InodeOperations.SetPermissions.
@@ -114,7 +114,7 @@ func (n *MockInodeOperations) SetTimestamps(context.Context, *Inode, TimeSpec) e
 // Create implements fs.InodeOperations.Create.
 func (n *MockInodeOperations) Create(ctx context.Context, dir *Inode, p string, flags FileFlags, perms FilePermissions) (*File, error) {
 	n.createCalled = true
-	d := NewDirent(NewInode(&MockInodeOperations{}, dir.MountSource, StableAttr{}), p)
+	d := NewDirent(ctx, NewInode(ctx, &MockInodeOperations{}, dir.MountSource, StableAttr{}), p)
 	return &File{Dirent: d}, nil
 }
 
diff --git a/pkg/sentry/fs/mount.go b/pkg/sentry/fs/mount.go
index ae9a4279a..2eb6a9d82 100644
--- a/pkg/sentry/fs/mount.go
+++ b/pkg/sentry/fs/mount.go
@@ -127,7 +127,7 @@ const DefaultDirentCacheSize uint64 = 1000
 
 // NewMountSource returns a new MountSource. Filesystem may be nil if there is no
 // filesystem backing the mount.
-func NewMountSource(mops MountSourceOperations, filesystem Filesystem, flags MountSourceFlags) *MountSource {
+func NewMountSource(ctx context.Context, mops MountSourceOperations, filesystem Filesystem, flags MountSourceFlags) *MountSource {
 	fsType := "none"
 	if filesystem != nil {
 		fsType = filesystem.Name()
@@ -188,16 +188,16 @@ func (msrc *MountSource) SetDirentCacheLimiter(l *DirentCacheLimiter) {
 
 // NewCachingMountSource returns a generic mount that will cache dirents
 // aggressively.
-func NewCachingMountSource(filesystem Filesystem, flags MountSourceFlags) *MountSource {
-	return NewMountSource(&SimpleMountSourceOperations{
+func NewCachingMountSource(ctx context.Context, filesystem Filesystem, flags MountSourceFlags) *MountSource {
+	return NewMountSource(ctx, &SimpleMountSourceOperations{
 		keep:       true,
 		revalidate: false,
 	}, filesystem, flags)
 }
 
 // NewNonCachingMountSource returns a generic mount that will never cache dirents.
-func NewNonCachingMountSource(filesystem Filesystem, flags MountSourceFlags) *MountSource {
-	return NewMountSource(&SimpleMountSourceOperations{
+func NewNonCachingMountSource(ctx context.Context, filesystem Filesystem, flags MountSourceFlags) *MountSource {
+	return NewMountSource(ctx, &SimpleMountSourceOperations{
 		keep:       false,
 		revalidate: false,
 	}, filesystem, flags)
@@ -205,8 +205,8 @@ func NewNonCachingMountSource(filesystem Filesystem, flags MountSourceFlags) *Mo
 
 // NewRevalidatingMountSource returns a generic mount that will cache dirents,
 // but will revalidate them on each lookup.
-func NewRevalidatingMountSource(filesystem Filesystem, flags MountSourceFlags) *MountSource {
-	return NewMountSource(&SimpleMountSourceOperations{
+func NewRevalidatingMountSource(ctx context.Context, filesystem Filesystem, flags MountSourceFlags) *MountSource {
+	return NewMountSource(ctx, &SimpleMountSourceOperations{
 		keep:       true,
 		revalidate: true,
 	}, filesystem, flags)
@@ -214,8 +214,8 @@ func NewRevalidatingMountSource(filesystem Filesystem, flags MountSourceFlags) *
 
 // NewPseudoMountSource returns a "pseudo" mount source that is not backed by
 // an actual filesystem. It is always non-caching.
-func NewPseudoMountSource() *MountSource {
-	return NewMountSource(&SimpleMountSourceOperations{
+func NewPseudoMountSource(ctx context.Context) *MountSource {
+	return NewMountSource(ctx, &SimpleMountSourceOperations{
 		keep:       false,
 		revalidate: false,
 	}, nil, MountSourceFlags{})
diff --git a/pkg/sentry/fs/mount_overlay.go b/pkg/sentry/fs/mount_overlay.go
index cb413e8dc..bc0ce7adc 100644
--- a/pkg/sentry/fs/mount_overlay.go
+++ b/pkg/sentry/fs/mount_overlay.go
@@ -28,10 +28,10 @@ type overlayMountSourceOperations struct {
 	lower *MountSource
 }
 
-func newOverlayMountSource(upper, lower *MountSource, flags MountSourceFlags) *MountSource {
+func newOverlayMountSource(ctx context.Context, upper, lower *MountSource, flags MountSourceFlags) *MountSource {
 	upper.IncRef()
 	lower.IncRef()
-	msrc := NewMountSource(&overlayMountSourceOperations{
+	msrc := NewMountSource(ctx, &overlayMountSourceOperations{
 		upper: upper,
 		lower: lower,
 	}, &overlayFilesystem{}, flags)
diff --git a/pkg/sentry/fs/mounts.go b/pkg/sentry/fs/mounts.go
index c15d76e90..a5d6f8b9a 100644
--- a/pkg/sentry/fs/mounts.go
+++ b/pkg/sentry/fs/mounts.go
@@ -166,7 +166,7 @@ func NewMountNamespace(ctx context.Context, root *Inode) (*MountNamespace, error
 
 	// Set the root dirent and id on the root mount. The reference returned from
 	// NewDirent will be donated to the MountNamespace constructed below.
-	d := NewDirent(root, "/")
+	d := NewDirent(ctx, root, "/")
 
 	mnts := map[*Dirent]*Mount{
 		d: newRootMount(1, d),
diff --git a/pkg/sentry/fs/overlay.go b/pkg/sentry/fs/overlay.go
index 0ad11131c..c87f24997 100644
--- a/pkg/sentry/fs/overlay.go
+++ b/pkg/sentry/fs/overlay.go
@@ -104,7 +104,7 @@ func NewOverlayRoot(ctx context.Context, upper *Inode, lower *Inode, flags Mount
 		return nil, fmt.Errorf("cannot nest overlay in upper file of another overlay")
 	}
 
-	msrc := newOverlayMountSource(upper.MountSource, lower.MountSource, flags)
+	msrc := newOverlayMountSource(ctx, upper.MountSource, lower.MountSource, flags)
 	overlay, err := newOverlayEntry(ctx, upper, lower, true)
 	if err != nil {
 		msrc.DecRef()
@@ -127,7 +127,7 @@ func NewOverlayRootFile(ctx context.Context, upperMS *MountSource, lower *Inode,
 	if !IsRegular(lower.StableAttr) {
 		return nil, fmt.Errorf("lower Inode is not a regular file")
 	}
-	msrc := newOverlayMountSource(upperMS, lower.MountSource, flags)
+	msrc := newOverlayMountSource(ctx, upperMS, lower.MountSource, flags)
 	overlay, err := newOverlayEntry(ctx, nil, lower, true)
 	if err != nil {
 		msrc.DecRef()
@@ -140,9 +140,9 @@ func NewOverlayRootFile(ctx context.Context, upperMS *MountSource, lower *Inode,
 func newOverlayInode(ctx context.Context, o *overlayEntry, msrc *MountSource) *Inode {
 	var inode *Inode
 	if o.upper != nil {
-		inode = NewInode(nil, msrc, o.upper.StableAttr)
+		inode = NewInode(ctx, nil, msrc, o.upper.StableAttr)
 	} else {
-		inode = NewInode(nil, msrc, o.lower.StableAttr)
+		inode = NewInode(ctx, nil, msrc, o.lower.StableAttr)
 	}
 	inode.overlay = o
 	return inode
diff --git a/pkg/sentry/fs/proc/exec_args.go b/pkg/sentry/fs/proc/exec_args.go
index 9de0177e8..1d3a2d426 100644
--- a/pkg/sentry/fs/proc/exec_args.go
+++ b/pkg/sentry/fs/proc/exec_args.go
@@ -64,7 +64,7 @@ func newExecArgInode(t *kernel.Task, msrc *fs.MountSource, arg execArgType) *fs.
 		arg:             arg,
 		t:               t,
 	}
-	return newProcInode(f, msrc, fs.SpecialFile, t)
+	return newProcInode(t, f, msrc, fs.SpecialFile, t)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
diff --git a/pkg/sentry/fs/proc/fds.go b/pkg/sentry/fs/proc/fds.go
index 1e4e72b87..ea7aded9a 100644
--- a/pkg/sentry/fs/proc/fds.go
+++ b/pkg/sentry/fs/proc/fds.go
@@ -105,7 +105,7 @@ func newFd(t *kernel.Task, f *fs.File, msrc *fs.MountSource) *fs.Inode {
 		Symlink: *ramfs.NewSymlink(t, fs.RootOwner, ""),
 		file:    f,
 	}
-	return newProcInode(fd, msrc, fs.Symlink, t)
+	return newProcInode(t, fd, msrc, fs.Symlink, t)
 }
 
 // GetFile returns the fs.File backing this fd.  The dirent and flags
@@ -168,7 +168,7 @@ func newFdDir(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		Dir: *ramfs.NewDir(t, nil, fs.RootOwner, fs.FilePermissions{User: fs.PermMask{Read: true, Execute: true}}),
 		t:   t,
 	}
-	return newProcInode(f, msrc, fs.SpecialDirectory, t)
+	return newProcInode(t, f, msrc, fs.SpecialDirectory, t)
 }
 
 // Check implements InodeOperations.Check.
@@ -198,7 +198,7 @@ func (f *fdDir) Lookup(ctx context.Context, dir *fs.Inode, p string) (*fs.Dirent
 	if err != nil {
 		return nil, err
 	}
-	return fs.NewDirent(n, p), nil
+	return fs.NewDirent(ctx, n, p), nil
 }
 
 // GetFile implements fs.FileOperations.GetFile.
@@ -252,7 +252,7 @@ func newFdInfoDir(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		Dir: *ramfs.NewDir(t, nil, fs.RootOwner, fs.FilePermsFromMode(0500)),
 		t:   t,
 	}
-	return newProcInode(fdid, msrc, fs.SpecialDirectory, t)
+	return newProcInode(t, fdid, msrc, fs.SpecialDirectory, t)
 }
 
 // Lookup loads an fd in /proc/TID/fdinfo into a Dirent.
@@ -272,7 +272,7 @@ func (fdid *fdInfoDir) Lookup(ctx context.Context, dir *fs.Inode, p string) (*fs
 	if err != nil {
 		return nil, err
 	}
-	return fs.NewDirent(inode, p), nil
+	return fs.NewDirent(ctx, inode, p), nil
 }
 
 // GetFile implements fs.FileOperations.GetFile.
diff --git a/pkg/sentry/fs/proc/fs.go b/pkg/sentry/fs/proc/fs.go
index f4ac4949a..715591ae5 100644
--- a/pkg/sentry/fs/proc/fs.go
+++ b/pkg/sentry/fs/proc/fs.go
@@ -77,5 +77,5 @@ func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSou
 
 	// Construct the procfs root. Since procfs files are all virtual, we
 	// never want them cached.
-	return New(ctx, fs.NewNonCachingMountSource(f, flags), cgroups)
+	return New(ctx, fs.NewNonCachingMountSource(ctx, f, flags), cgroups)
 }
diff --git a/pkg/sentry/fs/proc/inode.go b/pkg/sentry/fs/proc/inode.go
index 1d81488cd..0c04f81fa 100644
--- a/pkg/sentry/fs/proc/inode.go
+++ b/pkg/sentry/fs/proc/inode.go
@@ -115,11 +115,11 @@ func newStaticProcInode(ctx context.Context, msrc *fs.MountSource, contents []by
 			Contents: contents,
 		},
 	}
-	return newProcInode(iops, msrc, fs.SpecialFile, nil)
+	return newProcInode(ctx, iops, msrc, fs.SpecialFile, nil)
 }
 
 // newProcInode creates a new inode from the given inode operations.
-func newProcInode(iops fs.InodeOperations, msrc *fs.MountSource, typ fs.InodeType, t *kernel.Task) *fs.Inode {
+func newProcInode(ctx context.Context, iops fs.InodeOperations, msrc *fs.MountSource, typ fs.InodeType, t *kernel.Task) *fs.Inode {
 	sattr := fs.StableAttr{
 		DeviceID:  device.ProcDevice.DeviceID(),
 		InodeID:   device.ProcDevice.NextIno(),
@@ -129,5 +129,5 @@ func newProcInode(iops fs.InodeOperations, msrc *fs.MountSource, typ fs.InodeTyp
 	if t != nil {
 		iops = &taskOwnedInodeOps{iops, t}
 	}
-	return fs.NewInode(iops, msrc, sattr)
+	return fs.NewInode(ctx, iops, msrc, sattr)
 }
diff --git a/pkg/sentry/fs/proc/net.go b/pkg/sentry/fs/proc/net.go
index cbc8f4dbf..caa1a5c4d 100644
--- a/pkg/sentry/fs/proc/net.go
+++ b/pkg/sentry/fs/proc/net.go
@@ -70,7 +70,7 @@ func (p *proc) newNetDir(ctx context.Context, k *kernel.Kernel, msrc *fs.MountSo
 		}
 	}
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 // ifinet6 implements seqfile.SeqSource for /proc/net/if_inet6.
diff --git a/pkg/sentry/fs/proc/proc.go b/pkg/sentry/fs/proc/proc.go
index 170e2af4f..0ef13f2f5 100644
--- a/pkg/sentry/fs/proc/proc.go
+++ b/pkg/sentry/fs/proc/proc.go
@@ -68,7 +68,7 @@ func New(ctx context.Context, msrc *fs.MountSource, cgroupControllers map[string
 		"filesystems": seqfile.NewSeqFileInode(ctx, &filesystemsData{}, msrc),
 		"loadavg":     seqfile.NewSeqFileInode(ctx, &loadavgData{}, msrc),
 		"meminfo":     seqfile.NewSeqFileInode(ctx, &meminfoData{k}, msrc),
-		"mounts":      newProcInode(ramfs.NewSymlink(ctx, fs.RootOwner, "self/mounts"), msrc, fs.Symlink, nil),
+		"mounts":      newProcInode(ctx, ramfs.NewSymlink(ctx, fs.RootOwner, "self/mounts"), msrc, fs.Symlink, nil),
 		"self":        newSelf(ctx, pidns, msrc),
 		"stat":        seqfile.NewSeqFileInode(ctx, &statData{k}, msrc),
 		"thread-self": newThreadSelf(ctx, pidns, msrc),
@@ -94,7 +94,7 @@ func New(ctx context.Context, msrc *fs.MountSource, cgroupControllers map[string
 		p.AddChild(ctx, "net", p.newNetDir(ctx, k, msrc))
 	}
 
-	return newProcInode(p, msrc, fs.SpecialDirectory, nil), nil
+	return newProcInode(ctx, p, msrc, fs.SpecialDirectory, nil), nil
 }
 
 // self is a magical link.
@@ -112,7 +112,7 @@ func newSelf(ctx context.Context, pidns *kernel.PIDNamespace, msrc *fs.MountSour
 		Symlink: *ramfs.NewSymlink(ctx, fs.RootOwner, ""),
 		pidns:   pidns,
 	}
-	return newProcInode(s, msrc, fs.Symlink, nil)
+	return newProcInode(ctx, s, msrc, fs.Symlink, nil)
 }
 
 // newThreadSelf returns a new "threadSelf" node.
@@ -121,7 +121,7 @@ func newThreadSelf(ctx context.Context, pidns *kernel.PIDNamespace, msrc *fs.Mou
 		Symlink: *ramfs.NewSymlink(ctx, fs.RootOwner, ""),
 		pidns:   pidns,
 	}
-	return newProcInode(s, msrc, fs.Symlink, nil)
+	return newProcInode(ctx, s, msrc, fs.Symlink, nil)
 }
 
 // Readlink implements fs.InodeOperations.Readlink.
@@ -185,7 +185,7 @@ func (p *proc) Lookup(ctx context.Context, dir *fs.Inode, name string) (*fs.Dire
 
 	// Wrap it in a taskDir.
 	td := p.newTaskDir(otherTask, dir.MountSource, true)
-	return fs.NewDirent(td, name), nil
+	return fs.NewDirent(ctx, td, name), nil
 }
 
 // GetFile implements fs.InodeOperations.
diff --git a/pkg/sentry/fs/proc/rpcinet_proc.go b/pkg/sentry/fs/proc/rpcinet_proc.go
index d37a83501..c1405a746 100644
--- a/pkg/sentry/fs/proc/rpcinet_proc.go
+++ b/pkg/sentry/fs/proc/rpcinet_proc.go
@@ -45,7 +45,7 @@ func newRPCInetInode(ctx context.Context, msrc *fs.MountSource, filepath string,
 		filepath:        filepath,
 		k:               kernel.KernelFromContext(ctx),
 	}
-	return newProcInode(f, msrc, fs.SpecialFile, nil)
+	return newProcInode(ctx, f, msrc, fs.SpecialFile, nil)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
@@ -141,7 +141,7 @@ func newRPCInetProcNet(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 // newRPCInetProcSysNet will build an inode for /proc/sys/net.
@@ -152,7 +152,7 @@ func newRPCInetProcSysNet(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 // newRPCInetSysNetCore builds the /proc/sys/net/core directory.
@@ -170,7 +170,7 @@ func newRPCInetSysNetCore(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 // newRPCInetSysNetIPv4Dir builds the /proc/sys/net/ipv4 directory.
@@ -213,5 +213,5 @@ func newRPCInetSysNetIPv4Dir(ctx context.Context, msrc *fs.MountSource) *fs.Inod
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
diff --git a/pkg/sentry/fs/proc/seqfile/seqfile.go b/pkg/sentry/fs/proc/seqfile/seqfile.go
index 8ee7f5fa5..d5590e2d3 100644
--- a/pkg/sentry/fs/proc/seqfile/seqfile.go
+++ b/pkg/sentry/fs/proc/seqfile/seqfile.go
@@ -133,7 +133,7 @@ func NewSeqFileInode(ctx context.Context, source SeqSource, msrc *fs.MountSource
 		BlockSize: usermem.PageSize,
 		Type:      fs.SpecialFile,
 	}
-	return fs.NewInode(iops, msrc, sattr)
+	return fs.NewInode(ctx, iops, msrc, sattr)
 }
 
 // UnstableAttr returns unstable attributes of the SeqFile.
diff --git a/pkg/sentry/fs/proc/sys.go b/pkg/sentry/fs/proc/sys.go
index 4288b9a36..cd37776c8 100644
--- a/pkg/sentry/fs/proc/sys.go
+++ b/pkg/sentry/fs/proc/sys.go
@@ -82,14 +82,14 @@ func (p *proc) newKernelDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode
 	}
 
 	children := map[string]*fs.Inode{
-		"hostname": newProcInode(&h, msrc, fs.SpecialFile, nil),
+		"hostname": newProcInode(ctx, &h, msrc, fs.SpecialFile, nil),
 		"shmall":   newStaticProcInode(ctx, msrc, []byte(strconv.FormatUint(linux.SHMALL, 10))),
 		"shmmax":   newStaticProcInode(ctx, msrc, []byte(strconv.FormatUint(linux.SHMMAX, 10))),
 		"shmmni":   newStaticProcInode(ctx, msrc, []byte(strconv.FormatUint(linux.SHMMNI, 10))),
 	}
 
 	d := ramfs.NewDir(ctx, children, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 func (p *proc) newVMDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
@@ -98,7 +98,7 @@ func (p *proc) newVMDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 		"overcommit_memory": seqfile.NewSeqFileInode(ctx, &overcommitMemory{}, msrc),
 	}
 	d := ramfs.NewDir(ctx, children, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 func (p *proc) newSysDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
@@ -115,7 +115,7 @@ func (p *proc) newSysDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	}
 
 	d := ramfs.NewDir(ctx, children, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 // hostname is the inode for a file containing the system hostname.
diff --git a/pkg/sentry/fs/proc/sys_net.go b/pkg/sentry/fs/proc/sys_net.go
index 7e05240f8..f3b63dfc2 100644
--- a/pkg/sentry/fs/proc/sys_net.go
+++ b/pkg/sentry/fs/proc/sys_net.go
@@ -74,7 +74,7 @@ func newTCPMemInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack, dir
 		BlockSize: usermem.PageSize,
 		Type:      fs.SpecialFile,
 	}
-	return fs.NewInode(tm, msrc, sattr)
+	return fs.NewInode(ctx, tm, msrc, sattr)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
@@ -184,7 +184,7 @@ func newTCPSackInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack) *f
 		BlockSize: usermem.PageSize,
 		Type:      fs.SpecialFile,
 	}
-	return fs.NewInode(ts, msrc, sattr)
+	return fs.NewInode(ctx, ts, msrc, sattr)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
@@ -277,7 +277,7 @@ func (p *proc) newSysNetCore(ctx context.Context, msrc *fs.MountSource, s inet.S
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 func (p *proc) newSysNetIPv4Dir(ctx context.Context, msrc *fs.MountSource, s inet.Stack) *fs.Inode {
@@ -339,7 +339,7 @@ func (p *proc) newSysNetIPv4Dir(ctx context.Context, msrc *fs.MountSource, s ine
 	}
 
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
 
 func (p *proc) newSysNetDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
@@ -351,5 +351,5 @@ func (p *proc) newSysNetDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode
 		}
 	}
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return newProcInode(d, msrc, fs.SpecialDirectory, nil)
+	return newProcInode(ctx, d, msrc, fs.SpecialDirectory, nil)
 }
diff --git a/pkg/sentry/fs/proc/task.go b/pkg/sentry/fs/proc/task.go
index 412c0204a..b2e36aeee 100644
--- a/pkg/sentry/fs/proc/task.go
+++ b/pkg/sentry/fs/proc/task.go
@@ -101,7 +101,7 @@ func (p *proc) newTaskDir(t *kernel.Task, msrc *fs.MountSource, showSubtasks boo
 		Dir: *ramfs.NewDir(t, contents, fs.RootOwner, fs.FilePermsFromMode(0555)),
 		t:   t,
 	}
-	return newProcInode(d, msrc, fs.SpecialDirectory, t)
+	return newProcInode(t, d, msrc, fs.SpecialDirectory, t)
 }
 
 // subtasks represents a /proc/TID/task directory.
@@ -122,7 +122,7 @@ func (p *proc) newSubtasks(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		t:   t,
 		p:   p,
 	}
-	return newProcInode(s, msrc, fs.SpecialDirectory, t)
+	return newProcInode(t, s, msrc, fs.SpecialDirectory, t)
 }
 
 // UnstableAttr returns unstable attributes of the subtasks.
@@ -223,7 +223,7 @@ func (s *subtasks) Lookup(ctx context.Context, dir *fs.Inode, p string) (*fs.Dir
 	}
 
 	td := s.p.newTaskDir(task, dir.MountSource, false)
-	return fs.NewDirent(td, p), nil
+	return fs.NewDirent(ctx, td, p), nil
 }
 
 // exe is an fs.InodeOperations symlink for the /proc/PID/exe file.
@@ -240,7 +240,7 @@ func newExe(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		Symlink: *ramfs.NewSymlink(t, fs.RootOwner, ""),
 		t:       t,
 	}
-	return newProcInode(exeSymlink, msrc, fs.Symlink, t)
+	return newProcInode(t, exeSymlink, msrc, fs.Symlink, t)
 }
 
 func (e *exe) executable() (d *fs.Dirent, err error) {
@@ -308,7 +308,7 @@ func newNamespaceSymlink(t *kernel.Task, msrc *fs.MountSource, name string) *fs.
 		Symlink: *ramfs.NewSymlink(t, fs.RootOwner, target),
 		t:       t,
 	}
-	return newProcInode(n, msrc, fs.Symlink, t)
+	return newProcInode(t, n, msrc, fs.Symlink, t)
 }
 
 // Getlink implements fs.InodeOperations.Getlink.
@@ -319,7 +319,7 @@ func (n *namespaceSymlink) Getlink(ctx context.Context, inode *fs.Inode) (*fs.Di
 
 	// Create a new regular file to fake the namespace file.
 	iops := fsutil.NewNoReadWriteFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0777), linux.PROC_SUPER_MAGIC)
-	return fs.NewDirent(newProcInode(iops, inode.MountSource, fs.RegularFile, nil), n.Symlink.Target), nil
+	return fs.NewDirent(ctx, newProcInode(ctx, iops, inode.MountSource, fs.RegularFile, nil), n.Symlink.Target), nil
 }
 
 func newNamespaceDir(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
@@ -329,7 +329,7 @@ func newNamespaceDir(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		"user": newNamespaceSymlink(t, msrc, "user"),
 	}
 	d := ramfs.NewDir(t, contents, fs.RootOwner, fs.FilePermsFromMode(0511))
-	return newProcInode(d, msrc, fs.SpecialDirectory, t)
+	return newProcInode(t, d, msrc, fs.SpecialDirectory, t)
 }
 
 // mapsData implements seqfile.SeqSource for /proc/[pid]/maps.
@@ -340,7 +340,7 @@ type mapsData struct {
 }
 
 func newMaps(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &mapsData{t}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &mapsData{t}), msrc, fs.SpecialFile, t)
 }
 
 func (md *mapsData) mm() *mm.MemoryManager {
@@ -380,7 +380,7 @@ type smapsData struct {
 }
 
 func newSmaps(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &smapsData{t}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &smapsData{t}), msrc, fs.SpecialFile, t)
 }
 
 func (sd *smapsData) mm() *mm.MemoryManager {
@@ -426,7 +426,7 @@ type taskStatData struct {
 }
 
 func newTaskStat(t *kernel.Task, msrc *fs.MountSource, showSubtasks bool, pidns *kernel.PIDNamespace) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &taskStatData{t, showSubtasks /* tgstats */, pidns}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &taskStatData{t, showSubtasks /* tgstats */, pidns}), msrc, fs.SpecialFile, t)
 }
 
 // NeedsUpdate returns whether the generation is old or not.
@@ -511,7 +511,7 @@ type statmData struct {
 }
 
 func newStatm(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &statmData{t}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &statmData{t}), msrc, fs.SpecialFile, t)
 }
 
 // NeedsUpdate implements seqfile.SeqSource.NeedsUpdate.
@@ -548,7 +548,7 @@ type statusData struct {
 }
 
 func newStatus(t *kernel.Task, msrc *fs.MountSource, pidns *kernel.PIDNamespace) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &statusData{t, pidns}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &statusData{t, pidns}), msrc, fs.SpecialFile, t)
 }
 
 // NeedsUpdate implements seqfile.SeqSource.NeedsUpdate.
@@ -615,7 +615,7 @@ type ioData struct {
 }
 
 func newIO(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
-	return newProcInode(seqfile.NewSeqFile(t, &ioData{t.ThreadGroup()}), msrc, fs.SpecialFile, t)
+	return newProcInode(t, seqfile.NewSeqFile(t, &ioData{t.ThreadGroup()}), msrc, fs.SpecialFile, t)
 }
 
 // NeedsUpdate returns whether the generation is old or not.
@@ -664,7 +664,7 @@ func newComm(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		SimpleFileInode: *fsutil.NewSimpleFileInode(t, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC),
 		t:               t,
 	}
-	return newProcInode(c, msrc, fs.SpecialFile, t)
+	return newProcInode(t, c, msrc, fs.SpecialFile, t)
 }
 
 // Check implements fs.InodeOperations.Check.
@@ -736,7 +736,7 @@ func newAuxvec(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 		SimpleFileInode: *fsutil.NewSimpleFileInode(t, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC),
 		t:               t,
 	}
-	return newProcInode(a, msrc, fs.SpecialFile, t)
+	return newProcInode(t, a, msrc, fs.SpecialFile, t)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
diff --git a/pkg/sentry/fs/proc/uid_gid_map.go b/pkg/sentry/fs/proc/uid_gid_map.go
index d734a48f4..eea37d15c 100644
--- a/pkg/sentry/fs/proc/uid_gid_map.go
+++ b/pkg/sentry/fs/proc/uid_gid_map.go
@@ -66,7 +66,7 @@ func newGIDMap(t *kernel.Task, msrc *fs.MountSource) *fs.Inode {
 }
 
 func newIDMap(t *kernel.Task, msrc *fs.MountSource, gids bool) *fs.Inode {
-	return newProcInode(&idMapInodeOperations{
+	return newProcInode(t, &idMapInodeOperations{
 		InodeSimpleAttributes: fsutil.NewInodeSimpleAttributes(t, fs.RootOwner, fs.FilePermsFromMode(0644), linux.PROC_SUPER_MAGIC),
 		t:                     t,
 		gids:                  gids,
diff --git a/pkg/sentry/fs/proc/uptime.go b/pkg/sentry/fs/proc/uptime.go
index 37e9ae379..4e903917a 100644
--- a/pkg/sentry/fs/proc/uptime.go
+++ b/pkg/sentry/fs/proc/uptime.go
@@ -44,7 +44,7 @@ func newUptime(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 		SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC),
 		startTime:       ktime.NowFromContext(ctx),
 	}
-	return newProcInode(u, msrc, fs.SpecialFile, nil)
+	return newProcInode(ctx, u, msrc, fs.SpecialFile, nil)
 }
 
 // GetFile implements fs.InodeOperations.GetFile.
diff --git a/pkg/sentry/fs/ramfs/dir.go b/pkg/sentry/fs/ramfs/dir.go
index b5da36c1c..db97f400b 100644
--- a/pkg/sentry/fs/ramfs/dir.go
+++ b/pkg/sentry/fs/ramfs/dir.go
@@ -269,7 +269,7 @@ func (d *Dir) Lookup(ctx context.Context, _ *fs.Inode, p string) (*fs.Dirent, er
 	// Take a reference on the inode before returning it.  This reference
 	// is owned by the dirent we are about to create.
 	inode.IncRef()
-	return fs.NewDirent(inode, p), nil
+	return fs.NewDirent(ctx, inode, p), nil
 }
 
 // walkLocked must be called with d.mu held.
@@ -321,7 +321,7 @@ func (d *Dir) Create(ctx context.Context, dir *fs.Inode, name string, flags fs.F
 	inode.IncRef()
 
 	// Create the Dirent and corresponding file.
-	created := fs.NewDirent(inode, name)
+	created := fs.NewDirent(ctx, inode, name)
 	defer created.DecRef()
 	return created.Inode.GetFile(ctx, created, flags)
 }
@@ -382,7 +382,7 @@ func (d *Dir) Bind(ctx context.Context, dir *fs.Inode, name string, ep transport
 	}
 	// Take another ref on inode which will be donated to the new dirent.
 	inode.IncRef()
-	return fs.NewDirent(inode, name), nil
+	return fs.NewDirent(ctx, inode, name), nil
 }
 
 // CreateFifo implements fs.InodeOperations.CreateFifo.
diff --git a/pkg/sentry/fs/ramfs/tree.go b/pkg/sentry/fs/ramfs/tree.go
index 4d9deb174..702cc4a1e 100644
--- a/pkg/sentry/fs/ramfs/tree.go
+++ b/pkg/sentry/fs/ramfs/tree.go
@@ -68,7 +68,7 @@ func makeSubdir(ctx context.Context, msrc *fs.MountSource, root *Dir, subdir str
 // emptyDir returns an empty *ramfs.Dir with all permissions granted.
 func emptyDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 	dir := NewDir(ctx, make(map[string]*fs.Inode), fs.RootOwner, fs.FilePermsFromMode(0777))
-	return fs.NewInode(dir, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, dir, msrc, fs.StableAttr{
 		DeviceID:  anon.PseudoDevice.DeviceID(),
 		InodeID:   anon.PseudoDevice.NextIno(),
 		BlockSize: usermem.PageSize,
diff --git a/pkg/sentry/fs/sys/devices.go b/pkg/sentry/fs/sys/devices.go
index a6009ba8a..4f78ca8d2 100644
--- a/pkg/sentry/fs/sys/devices.go
+++ b/pkg/sentry/fs/sys/devices.go
@@ -58,7 +58,7 @@ func newPossible(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 			Contents: contents,
 		},
 	}
-	return newFile(c, msrc)
+	return newFile(ctx, c, msrc)
 }
 
 func newCPU(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
diff --git a/pkg/sentry/fs/sys/fs.go b/pkg/sentry/fs/sys/fs.go
index 257048df5..b31c46bf9 100644
--- a/pkg/sentry/fs/sys/fs.go
+++ b/pkg/sentry/fs/sys/fs.go
@@ -61,5 +61,5 @@ func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSou
 	// device is always ignored.
 	// sysfs ignores data, see fs/sysfs/mount.c:sysfs_mount.
 
-	return New(ctx, fs.NewNonCachingMountSource(f, flags)), nil
+	return New(ctx, fs.NewNonCachingMountSource(ctx, f, flags)), nil
 }
diff --git a/pkg/sentry/fs/sys/sys.go b/pkg/sentry/fs/sys/sys.go
index 9db41a1b8..b14bf3f55 100644
--- a/pkg/sentry/fs/sys/sys.go
+++ b/pkg/sentry/fs/sys/sys.go
@@ -22,19 +22,19 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/usermem"
 )
 
-func newFile(node fs.InodeOperations, msrc *fs.MountSource) *fs.Inode {
+func newFile(ctx context.Context, node fs.InodeOperations, msrc *fs.MountSource) *fs.Inode {
 	sattr := fs.StableAttr{
 		DeviceID:  sysfsDevice.DeviceID(),
 		InodeID:   sysfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
 		Type:      fs.SpecialFile,
 	}
-	return fs.NewInode(node, msrc, sattr)
+	return fs.NewInode(ctx, node, msrc, sattr)
 }
 
 func newDir(ctx context.Context, msrc *fs.MountSource, contents map[string]*fs.Inode) *fs.Inode {
 	d := ramfs.NewDir(ctx, contents, fs.RootOwner, fs.FilePermsFromMode(0555))
-	return fs.NewInode(d, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, d, msrc, fs.StableAttr{
 		DeviceID:  sysfsDevice.DeviceID(),
 		InodeID:   sysfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
diff --git a/pkg/sentry/fs/timerfd/timerfd.go b/pkg/sentry/fs/timerfd/timerfd.go
index 704a846a4..59403d9db 100644
--- a/pkg/sentry/fs/timerfd/timerfd.go
+++ b/pkg/sentry/fs/timerfd/timerfd.go
@@ -53,7 +53,7 @@ type TimerOperations struct {
 
 // NewFile returns a timerfd File that receives time from c.
 func NewFile(ctx context.Context, c ktime.Clock) *fs.File {
-	dirent := fs.NewDirent(anon.NewInode(ctx), "anon_inode:[timerfd]")
+	dirent := fs.NewDirent(ctx, anon.NewInode(ctx), "anon_inode:[timerfd]")
 	// Release the initial dirent reference after NewFile takes a reference.
 	defer dirent.DecRef()
 	tops := &TimerOperations{}
diff --git a/pkg/sentry/fs/tmpfs/fs.go b/pkg/sentry/fs/tmpfs/fs.go
index bfaf3cde3..a5fcdf969 100644
--- a/pkg/sentry/fs/tmpfs/fs.go
+++ b/pkg/sentry/fs/tmpfs/fs.go
@@ -136,9 +136,9 @@ func (f *Filesystem) Mount(ctx context.Context, device string, flags fs.MountSou
 	var msrc *fs.MountSource
 	switch options[cacheKey] {
 	case "", cacheAll:
-		msrc = fs.NewCachingMountSource(f, flags)
+		msrc = fs.NewCachingMountSource(ctx, f, flags)
 	case cacheRevalidate:
-		msrc = fs.NewRevalidatingMountSource(f, flags)
+		msrc = fs.NewRevalidatingMountSource(ctx, f, flags)
 	default:
 		return nil, fmt.Errorf("invalid cache policy option %q", options[cacheKey])
 	}
diff --git a/pkg/sentry/fs/tmpfs/inode_file.go b/pkg/sentry/fs/tmpfs/inode_file.go
index d20dce173..f86dfaa36 100644
--- a/pkg/sentry/fs/tmpfs/inode_file.go
+++ b/pkg/sentry/fs/tmpfs/inode_file.go
@@ -128,7 +128,7 @@ func NewMemfdInode(ctx context.Context, allowSeals bool) *fs.Inode {
 	if allowSeals {
 		iops.seals = 0
 	}
-	return fs.NewInode(iops, fs.NewNonCachingMountSource(nil, fs.MountSourceFlags{}), fs.StableAttr{
+	return fs.NewInode(ctx, iops, fs.NewNonCachingMountSource(ctx, nil, fs.MountSourceFlags{}), fs.StableAttr{
 		Type:      fs.RegularFile,
 		DeviceID:  tmpfsDevice.DeviceID(),
 		InodeID:   tmpfsDevice.NextIno(),
diff --git a/pkg/sentry/fs/tmpfs/tmpfs.go b/pkg/sentry/fs/tmpfs/tmpfs.go
index e8178c9dd..0f4497cd6 100644
--- a/pkg/sentry/fs/tmpfs/tmpfs.go
+++ b/pkg/sentry/fs/tmpfs/tmpfs.go
@@ -90,7 +90,7 @@ func NewDir(ctx context.Context, contents map[string]*fs.Inode, owner fs.FileOwn
 	// Manually set the CreateOps.
 	d.ramfsDir.CreateOps = d.newCreateOps()
 
-	return fs.NewInode(d, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, d, msrc, fs.StableAttr{
 		DeviceID:  tmpfsDevice.DeviceID(),
 		InodeID:   tmpfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -218,7 +218,7 @@ func (d *Dir) newCreateOps() *ramfs.CreateOps {
 				Links: 0,
 			})
 			iops := NewInMemoryFile(ctx, usage.Tmpfs, uattr)
-			return fs.NewInode(iops, dir.MountSource, fs.StableAttr{
+			return fs.NewInode(ctx, iops, dir.MountSource, fs.StableAttr{
 				DeviceID:  tmpfsDevice.DeviceID(),
 				InodeID:   tmpfsDevice.NextIno(),
 				BlockSize: usermem.PageSize,
@@ -262,7 +262,7 @@ type Symlink struct {
 // NewSymlink returns a new symlink with the provided permissions.
 func NewSymlink(ctx context.Context, target string, owner fs.FileOwner, msrc *fs.MountSource) *fs.Inode {
 	s := &Symlink{Symlink: *ramfs.NewSymlink(ctx, owner, target)}
-	return fs.NewInode(s, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, s, msrc, fs.StableAttr{
 		DeviceID:  tmpfsDevice.DeviceID(),
 		InodeID:   tmpfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -292,7 +292,7 @@ type Socket struct {
 // NewSocket returns a new socket with the provided permissions.
 func NewSocket(ctx context.Context, socket transport.BoundEndpoint, owner fs.FileOwner, perms fs.FilePermissions, msrc *fs.MountSource) *fs.Inode {
 	s := &Socket{Socket: *ramfs.NewSocket(ctx, socket, owner, perms)}
-	return fs.NewInode(s, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, s, msrc, fs.StableAttr{
 		DeviceID:  tmpfsDevice.DeviceID(),
 		InodeID:   tmpfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
@@ -329,7 +329,7 @@ func NewFifo(ctx context.Context, owner fs.FileOwner, perms fs.FilePermissions,
 	fifoIops := &Fifo{iops}
 
 	// Build a new Inode.
-	return fs.NewInode(fifoIops, msrc, fs.StableAttr{
+	return fs.NewInode(ctx, fifoIops, msrc, fs.StableAttr{
 		DeviceID:  tmpfsDevice.DeviceID(),
 		InodeID:   tmpfsDevice.NextIno(),
 		BlockSize: usermem.PageSize,
diff --git a/pkg/sentry/fs/tty/dir.go b/pkg/sentry/fs/tty/dir.go
index 679057d1f..58a26742c 100644
--- a/pkg/sentry/fs/tty/dir.go
+++ b/pkg/sentry/fs/tty/dir.go
@@ -114,7 +114,7 @@ func newDir(ctx context.Context, m *fs.MountSource) *fs.Inode {
 		InodeID: d.master.StableAttr.InodeID,
 	})
 
-	return fs.NewInode(d, m, fs.StableAttr{
+	return fs.NewInode(ctx, d, m, fs.StableAttr{
 		DeviceID: ptsDevice.DeviceID(),
 		// N.B. Linux always uses inode id 1 for the directory. See
 		// fs/devpts/inode.c:devpts_fill_super.
@@ -143,7 +143,7 @@ func (d *dirInodeOperations) Lookup(ctx context.Context, dir *fs.Inode, name str
 	// Master?
 	if name == "ptmx" {
 		d.master.IncRef()
-		return fs.NewDirent(d.master, name), nil
+		return fs.NewDirent(ctx, d.master, name), nil
 	}
 
 	// Slave number?
@@ -159,7 +159,7 @@ func (d *dirInodeOperations) Lookup(ctx context.Context, dir *fs.Inode, name str
 	}
 
 	s.IncRef()
-	return fs.NewDirent(s, name), nil
+	return fs.NewDirent(ctx, s, name), nil
 }
 
 // Create implements fs.InodeOperations.Create.
diff --git a/pkg/sentry/fs/tty/fs.go b/pkg/sentry/fs/tty/fs.go
index 08843c115..1bbfbb90a 100644
--- a/pkg/sentry/fs/tty/fs.go
+++ b/pkg/sentry/fs/tty/fs.go
@@ -67,7 +67,7 @@ func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSou
 		return nil, syserror.EINVAL
 	}
 
-	return newDir(ctx, fs.NewMountSource(&superOperations{}, f, flags)), nil
+	return newDir(ctx, fs.NewMountSource(ctx, &superOperations{}, f, flags)), nil
 }
 
 // superOperations implements fs.MountSourceOperations, preventing caching.
diff --git a/pkg/sentry/fs/tty/master.go b/pkg/sentry/fs/tty/master.go
index c02142ff3..54dd3d6b7 100644
--- a/pkg/sentry/fs/tty/master.go
+++ b/pkg/sentry/fs/tty/master.go
@@ -46,7 +46,7 @@ func newMasterInode(ctx context.Context, d *dirInodeOperations, owner fs.FileOwn
 		d:               d,
 	}
 
-	return fs.NewInode(iops, d.msrc, fs.StableAttr{
+	return fs.NewInode(ctx, iops, d.msrc, fs.StableAttr{
 		DeviceID: ptsDevice.DeviceID(),
 		// N.B. Linux always uses inode id 2 for ptmx. See
 		// fs/devpts/inode.c:mknod_ptmx.
diff --git a/pkg/sentry/fs/tty/slave.go b/pkg/sentry/fs/tty/slave.go
index a382dcd13..2d68978dd 100644
--- a/pkg/sentry/fs/tty/slave.go
+++ b/pkg/sentry/fs/tty/slave.go
@@ -51,7 +51,7 @@ func newSlaveInode(ctx context.Context, d *dirInodeOperations, t *Terminal, owne
 		t:               t,
 	}
 
-	return fs.NewInode(iops, d.msrc, fs.StableAttr{
+	return fs.NewInode(ctx, iops, d.msrc, fs.StableAttr{
 		DeviceID: ptsDevice.DeviceID(),
 		// N.B. Linux always uses inode id = tty index + 3. See
 		// fs/devpts/inode.c:devpts_pty_new.
diff --git a/pkg/sentry/kernel/epoll/epoll.go b/pkg/sentry/kernel/epoll/epoll.go
index 86ddbec12..33c7dccae 100644
--- a/pkg/sentry/kernel/epoll/epoll.go
+++ b/pkg/sentry/kernel/epoll/epoll.go
@@ -155,7 +155,7 @@ var cycleMu sync.Mutex
 // NewEventPoll allocates and initializes a new event poll object.
 func NewEventPoll(ctx context.Context) *fs.File {
 	// name matches fs/eventpoll.c:epoll_create1.
-	dirent := fs.NewDirent(anon.NewInode(ctx), fmt.Sprintf("anon_inode:[eventpoll]"))
+	dirent := fs.NewDirent(ctx, anon.NewInode(ctx), fmt.Sprintf("anon_inode:[eventpoll]"))
 	// Release the initial dirent reference after NewFile takes a reference.
 	defer dirent.DecRef()
 	return fs.NewFile(ctx, dirent, fs.FileFlags{}, &EventPoll{
diff --git a/pkg/sentry/kernel/eventfd/eventfd.go b/pkg/sentry/kernel/eventfd/eventfd.go
index 610c73d6f..12f0d429b 100644
--- a/pkg/sentry/kernel/eventfd/eventfd.go
+++ b/pkg/sentry/kernel/eventfd/eventfd.go
@@ -68,7 +68,7 @@ type EventOperations struct {
 // New creates a new event object with the supplied initial value and mode.
 func New(ctx context.Context, initVal uint64, semMode bool) *fs.File {
 	// name matches fs/eventfd.c:eventfd_file_create.
-	dirent := fs.NewDirent(anon.NewInode(ctx), "anon_inode:[eventfd]")
+	dirent := fs.NewDirent(ctx, anon.NewInode(ctx), "anon_inode:[eventfd]")
 	// Release the initial dirent reference after NewFile takes a reference.
 	defer dirent.DecRef()
 	return fs.NewFile(ctx, dirent, fs.FileFlags{Read: true, Write: true}, &EventOperations{
diff --git a/pkg/sentry/kernel/fasync/fasync.go b/pkg/sentry/kernel/fasync/fasync.go
index bcaca58f7..6b0bb0324 100644
--- a/pkg/sentry/kernel/fasync/fasync.go
+++ b/pkg/sentry/kernel/fasync/fasync.go
@@ -34,9 +34,23 @@ func New() fs.FileAsync {
 //
 // +stateify savable
 type FileAsync struct {
-	mu        sync.Mutex `state:"nosave"`
-	e         waiter.Entry
-	requester *auth.Credentials
+	// e is immutable after first use (which is protected by mu below).
+	e waiter.Entry
+
+	// regMu protects registeration and unregistration actions on e.
+	//
+	// regMu must be held while registration decisions are being made
+	// through the registration action itself.
+	//
+	// Lock ordering: regMu, mu.
+	regMu sync.Mutex `state:"nosave"`
+
+	// mu protects all following fields.
+	//
+	// Lock ordering: e.mu, mu.
+	mu         sync.Mutex `state:"nosave"`
+	requester  *auth.Credentials
+	registered bool
 
 	// Only one of the following is allowed to be non-nil.
 	recipientPG *kernel.ProcessGroup
@@ -47,7 +61,7 @@ type FileAsync struct {
 // Callback sends a signal.
 func (a *FileAsync) Callback(e *waiter.Entry) {
 	a.mu.Lock()
-	if a.e.Callback == nil {
+	if !a.registered {
 		a.mu.Unlock()
 		return
 	}
@@ -80,14 +94,21 @@ func (a *FileAsync) Callback(e *waiter.Entry) {
 //
 // The file must not be currently registered.
 func (a *FileAsync) Register(w waiter.Waitable) {
+	a.regMu.Lock()
+	defer a.regMu.Unlock()
 	a.mu.Lock()
-	defer a.mu.Unlock()
 
-	if a.e.Callback != nil {
+	if a.registered {
+		a.mu.Unlock()
 		panic("registering already registered file")
 	}
 
-	a.e.Callback = a
+	if a.e.Callback == nil {
+		a.e.Callback = a
+	}
+	a.registered = true
+
+	a.mu.Unlock()
 	w.EventRegister(&a.e, waiter.EventIn|waiter.EventOut|waiter.EventErr|waiter.EventHUp)
 }
 
@@ -95,15 +116,19 @@ func (a *FileAsync) Register(w waiter.Waitable) {
 //
 // The file must be currently registered.
 func (a *FileAsync) Unregister(w waiter.Waitable) {
+	a.regMu.Lock()
+	defer a.regMu.Unlock()
 	a.mu.Lock()
-	defer a.mu.Unlock()
 
-	if a.e.Callback == nil {
+	if !a.registered {
+		a.mu.Unlock()
 		panic("unregistering unregistered file")
 	}
 
+	a.registered = false
+
+	a.mu.Unlock()
 	w.EventUnregister(&a.e)
-	a.e.Callback = nil
 }
 
 // Owner returns who is currently getting signals. All return values will be
diff --git a/pkg/sentry/kernel/fasync/fasync_state_autogen.go b/pkg/sentry/kernel/fasync/fasync_state_autogen.go
index 0ffb3f7ad..c17daa8a1 100755
--- a/pkg/sentry/kernel/fasync/fasync_state_autogen.go
+++ b/pkg/sentry/kernel/fasync/fasync_state_autogen.go
@@ -11,6 +11,7 @@ func (x *FileAsync) save(m state.Map) {
 	x.beforeSave()
 	m.Save("e", &x.e)
 	m.Save("requester", &x.requester)
+	m.Save("registered", &x.registered)
 	m.Save("recipientPG", &x.recipientPG)
 	m.Save("recipientTG", &x.recipientTG)
 	m.Save("recipientT", &x.recipientT)
@@ -20,6 +21,7 @@ func (x *FileAsync) afterLoad() {}
 func (x *FileAsync) load(m state.Map) {
 	m.Load("e", &x.e)
 	m.Load("requester", &x.requester)
+	m.Load("registered", &x.registered)
 	m.Load("recipientPG", &x.recipientPG)
 	m.Load("recipientTG", &x.recipientTG)
 	m.Load("recipientT", &x.recipientT)
diff --git a/pkg/sentry/kernel/pipe/pipe.go b/pkg/sentry/kernel/pipe/pipe.go
index 18e60487f..755326d59 100644
--- a/pkg/sentry/kernel/pipe/pipe.go
+++ b/pkg/sentry/kernel/pipe/pipe.go
@@ -150,8 +150,8 @@ func NewConnectedPipe(ctx context.Context, sizeBytes, atomicIOBytes int64) (*fs.
 		InodeID:   ino,
 		BlockSize: int64(atomicIOBytes),
 	}
-	ms := fs.NewPseudoMountSource()
-	d := fs.NewDirent(fs.NewInode(iops, ms, sattr), fmt.Sprintf("pipe:[%d]", ino))
+	ms := fs.NewPseudoMountSource(ctx)
+	d := fs.NewDirent(ctx, fs.NewInode(ctx, iops, ms, sattr), fmt.Sprintf("pipe:[%d]", ino))
 	// The p.Open calls below will each take a reference on the Dirent. We
 	// must drop the one we already have.
 	defer d.DecRef()
diff --git a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo.go b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo.go
index 25ad17a4e..c284a1b11 100755
--- a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo.go
+++ b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo.go
@@ -1,11 +1,11 @@
 package kernel
 
 import (
-	"fmt"
 	"reflect"
 	"strings"
 	"unsafe"
 
+	"fmt"
 	"gvisor.dev/gvisor/third_party/gvsync"
 )
 
diff --git a/pkg/sentry/loader/vdso.go b/pkg/sentry/loader/vdso.go
index 4ba56c44d..ada28aea3 100644
--- a/pkg/sentry/loader/vdso.go
+++ b/pkg/sentry/loader/vdso.go
@@ -69,11 +69,12 @@ type byteReader struct {
 var _ fs.FileOperations = (*byteReader)(nil)
 
 // newByteReaderFile creates a fake file to read data from.
-func newByteReaderFile(data []byte) *fs.File {
+func newByteReaderFile(ctx context.Context, data []byte) *fs.File {
 	// Create a fake inode.
 	inode := fs.NewInode(
+		ctx,
 		&fsutil.SimpleFileInode{},
-		fs.NewPseudoMountSource(),
+		fs.NewPseudoMountSource(ctx),
 		fs.StableAttr{
 			Type:      fs.Anonymous,
 			DeviceID:  anon.PseudoDevice.DeviceID(),
@@ -219,8 +220,8 @@ type VDSO struct {
 
 // PrepareVDSO validates the system VDSO and returns a VDSO, containing the
 // param page for updating by the kernel.
-func PrepareVDSO(mfp pgalloc.MemoryFileProvider) (*VDSO, error) {
-	vdsoFile := newByteReaderFile(vdsoBin)
+func PrepareVDSO(ctx context.Context, mfp pgalloc.MemoryFileProvider) (*VDSO, error) {
+	vdsoFile := newByteReaderFile(ctx, vdsoBin)
 
 	// First make sure the VDSO is valid. vdsoFile does not use ctx, so a
 	// nil context can be passed.
diff --git a/pkg/sentry/platform/ring0/defs_impl.go b/pkg/sentry/platform/ring0/defs_impl.go
index ea3f514cd..d4bfc5a4a 100755
--- a/pkg/sentry/platform/ring0/defs_impl.go
+++ b/pkg/sentry/platform/ring0/defs_impl.go
@@ -1,10 +1,10 @@
 package ring0
 
 import (
-	"gvisor.dev/gvisor/pkg/cpuid"
 	"syscall"
 
 	"fmt"
+	"gvisor.dev/gvisor/pkg/cpuid"
 	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/usermem"
 	"io"
diff --git a/pkg/sentry/socket/epsocket/epsocket.go b/pkg/sentry/socket/epsocket/epsocket.go
index 8b783ae2f..ce3b247d0 100644
--- a/pkg/sentry/socket/epsocket/epsocket.go
+++ b/pkg/sentry/socket/epsocket/epsocket.go
@@ -668,12 +668,6 @@ func GetSockOpt(t *kernel.Task, s socket.Socket, ep commonEndpoint, family int,
 func getSockOptSocket(t *kernel.Task, s socket.Socket, ep commonEndpoint, family int, skType linux.SockType, name, outLen int) (interface{}, *syserr.Error) {
 	// TODO(b/124056281): Stop rejecting short optLen values in getsockopt.
 	switch name {
-	case linux.SO_TYPE:
-		if outLen < sizeOfInt32 {
-			return nil, syserr.ErrInvalidArgument
-		}
-		return int32(skType), nil
-
 	case linux.SO_ERROR:
 		if outLen < sizeOfInt32 {
 			return nil, syserr.ErrInvalidArgument
diff --git a/pkg/sentry/socket/epsocket/provider.go b/pkg/sentry/socket/epsocket/provider.go
index 37f3160cd..6d2b5d038 100644
--- a/pkg/sentry/socket/epsocket/provider.go
+++ b/pkg/sentry/socket/epsocket/provider.go
@@ -111,7 +111,7 @@ func (p *provider) Socket(t *kernel.Task, stype linux.SockType, protocol int) (*
 		return nil, syserr.TranslateNetstackError(e)
 	}
 
-	return New(t, p.family, stype, protocol, wq, ep)
+	return New(t, p.family, stype, int(transProto), wq, ep)
 }
 
 // Pair just returns nil sockets (not supported).
diff --git a/pkg/sentry/socket/hostinet/socket.go b/pkg/sentry/socket/hostinet/socket.go
index 2ca952920..cef007aca 100644
--- a/pkg/sentry/socket/hostinet/socket.go
+++ b/pkg/sentry/socket/hostinet/socket.go
@@ -288,7 +288,7 @@ func (s *socketOperations) GetSockOpt(t *kernel.Task, level int, name int, outLe
 		}
 	case syscall.SOL_SOCKET:
 		switch name {
-		case syscall.SO_ERROR, syscall.SO_KEEPALIVE, syscall.SO_SNDBUF, syscall.SO_RCVBUF, syscall.SO_REUSEADDR, syscall.SO_TYPE:
+		case syscall.SO_ERROR, syscall.SO_KEEPALIVE, syscall.SO_SNDBUF, syscall.SO_RCVBUF, syscall.SO_REUSEADDR:
 			optlen = sizeofInt32
 		case syscall.SO_LINGER:
 			optlen = syscall.SizeofLinger
diff --git a/pkg/sentry/socket/netlink/socket.go b/pkg/sentry/socket/netlink/socket.go
index 985a5f24a..87c0c77bc 100644
--- a/pkg/sentry/socket/netlink/socket.go
+++ b/pkg/sentry/socket/netlink/socket.go
@@ -111,7 +111,7 @@ var _ socket.Socket = (*Socket)(nil)
 // NewSocket creates a new Socket.
 func NewSocket(t *kernel.Task, skType linux.SockType, protocol Protocol) (*Socket, *syserr.Error) {
 	// Datagram endpoint used to buffer kernel -> user messages.
-	ep := transport.NewConnectionless()
+	ep := transport.NewConnectionless(t)
 
 	// Bind the endpoint for good measure so we can connect to it. The
 	// bound address will never be exposed.
@@ -121,7 +121,7 @@ func NewSocket(t *kernel.Task, skType linux.SockType, protocol Protocol) (*Socke
 	}
 
 	// Create a connection from which the kernel can write messages.
-	connection, err := ep.(transport.BoundEndpoint).UnidirectionalConnect()
+	connection, err := ep.(transport.BoundEndpoint).UnidirectionalConnect(t)
 	if err != nil {
 		ep.Close()
 		return nil, err
diff --git a/pkg/sentry/socket/socket.go b/pkg/sentry/socket/socket.go
index 65f38f61f..933120f34 100644
--- a/pkg/sentry/socket/socket.go
+++ b/pkg/sentry/socket/socket.go
@@ -199,7 +199,7 @@ func NewDirent(ctx context.Context, d *device.Device) *fs.Dirent {
 			User: fs.PermMask{Read: true, Write: true},
 		}, linux.SOCKFS_MAGIC),
 	}
-	inode := fs.NewInode(iops, fs.NewPseudoMountSource(), fs.StableAttr{
+	inode := fs.NewInode(ctx, iops, fs.NewPseudoMountSource(ctx), fs.StableAttr{
 		Type:      fs.Socket,
 		DeviceID:  d.DeviceID(),
 		InodeID:   ino,
@@ -207,7 +207,7 @@ func NewDirent(ctx context.Context, d *device.Device) *fs.Dirent {
 	})
 
 	// Dirent name matches net/socket.c:sockfs_dname.
-	return fs.NewDirent(inode, fmt.Sprintf("socket:[%d]", ino))
+	return fs.NewDirent(ctx, inode, fmt.Sprintf("socket:[%d]", ino))
 }
 
 // SendReceiveTimeout stores timeouts for send and receive calls.
diff --git a/pkg/sentry/socket/unix/io.go b/pkg/sentry/socket/unix/io.go
index 023c2f135..760c7beab 100644
--- a/pkg/sentry/socket/unix/io.go
+++ b/pkg/sentry/socket/unix/io.go
@@ -15,6 +15,7 @@
 package unix
 
 import (
+	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/sentry/safemem"
 	"gvisor.dev/gvisor/pkg/sentry/socket/unix/transport"
 	"gvisor.dev/gvisor/pkg/tcpip"
@@ -24,6 +25,8 @@ import (
 //
 // EndpointWriter is not thread-safe.
 type EndpointWriter struct {
+	Ctx context.Context
+
 	// Endpoint is the transport.Endpoint to write to.
 	Endpoint transport.Endpoint
 
@@ -37,7 +40,7 @@ type EndpointWriter struct {
 // WriteFromBlocks implements safemem.Writer.WriteFromBlocks.
 func (w *EndpointWriter) WriteFromBlocks(srcs safemem.BlockSeq) (uint64, error) {
 	return safemem.FromVecWriterFunc{func(bufs [][]byte) (int64, error) {
-		n, err := w.Endpoint.SendMsg(bufs, w.Control, w.To)
+		n, err := w.Endpoint.SendMsg(w.Ctx, bufs, w.Control, w.To)
 		if err != nil {
 			return int64(n), err.ToError()
 		}
@@ -50,6 +53,8 @@ func (w *EndpointWriter) WriteFromBlocks(srcs safemem.BlockSeq) (uint64, error)
 //
 // EndpointReader is not thread-safe.
 type EndpointReader struct {
+	Ctx context.Context
+
 	// Endpoint is the transport.Endpoint to read from.
 	Endpoint transport.Endpoint
 
@@ -81,7 +86,7 @@ type EndpointReader struct {
 // ReadToBlocks implements safemem.Reader.ReadToBlocks.
 func (r *EndpointReader) ReadToBlocks(dsts safemem.BlockSeq) (uint64, error) {
 	return safemem.FromVecReaderFunc{func(bufs [][]byte) (int64, error) {
-		n, ms, c, ct, err := r.Endpoint.RecvMsg(bufs, r.Creds, r.NumRights, r.Peek, r.From)
+		n, ms, c, ct, err := r.Endpoint.RecvMsg(r.Ctx, bufs, r.Creds, r.NumRights, r.Peek, r.From)
 		r.Control = c
 		r.ControlTrunc = ct
 		r.MsgSize = ms
diff --git a/pkg/sentry/socket/unix/transport/connectioned.go b/pkg/sentry/socket/unix/transport/connectioned.go
index 9d07cde22..e4c416233 100644
--- a/pkg/sentry/socket/unix/transport/connectioned.go
+++ b/pkg/sentry/socket/unix/transport/connectioned.go
@@ -18,6 +18,7 @@ import (
 	"sync"
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
+	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/syserr"
 	"gvisor.dev/gvisor/pkg/tcpip"
 	"gvisor.dev/gvisor/pkg/waiter"
@@ -111,8 +112,13 @@ type connectionedEndpoint struct {
 	acceptedChan chan *connectionedEndpoint `state:".([]*connectionedEndpoint)"`
 }
 
+var (
+	_ = BoundEndpoint((*connectionedEndpoint)(nil))
+	_ = Endpoint((*connectionedEndpoint)(nil))
+)
+
 // NewConnectioned creates a new unbound connectionedEndpoint.
-func NewConnectioned(stype linux.SockType, uid UniqueIDProvider) Endpoint {
+func NewConnectioned(ctx context.Context, stype linux.SockType, uid UniqueIDProvider) Endpoint {
 	return &connectionedEndpoint{
 		baseEndpoint: baseEndpoint{Queue: &waiter.Queue{}},
 		id:           uid.UniqueID(),
@@ -122,7 +128,7 @@ func NewConnectioned(stype linux.SockType, uid UniqueIDProvider) Endpoint {
 }
 
 // NewPair allocates a new pair of connected unix-domain connectionedEndpoints.
-func NewPair(stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
+func NewPair(ctx context.Context, stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
 	a := &connectionedEndpoint{
 		baseEndpoint: baseEndpoint{Queue: &waiter.Queue{}},
 		id:           uid.UniqueID(),
@@ -163,7 +169,7 @@ func NewPair(stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
 
 // NewExternal creates a new externally backed Endpoint. It behaves like a
 // socketpair.
-func NewExternal(stype linux.SockType, uid UniqueIDProvider, queue *waiter.Queue, receiver Receiver, connected ConnectedEndpoint) Endpoint {
+func NewExternal(ctx context.Context, stype linux.SockType, uid UniqueIDProvider, queue *waiter.Queue, receiver Receiver, connected ConnectedEndpoint) Endpoint {
 	return &connectionedEndpoint{
 		baseEndpoint: baseEndpoint{Queue: queue, receiver: receiver, connected: connected},
 		id:           uid.UniqueID(),
@@ -238,7 +244,7 @@ func (e *connectionedEndpoint) Close() {
 }
 
 // BidirectionalConnect implements BoundEndpoint.BidirectionalConnect.
-func (e *connectionedEndpoint) BidirectionalConnect(ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
+func (e *connectionedEndpoint) BidirectionalConnect(ctx context.Context, ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
 	if ce.Type() != e.stype {
 		return syserr.ErrConnectionRefused
 	}
@@ -334,19 +340,19 @@ func (e *connectionedEndpoint) BidirectionalConnect(ce ConnectingEndpoint, retur
 }
 
 // UnidirectionalConnect implements BoundEndpoint.UnidirectionalConnect.
-func (e *connectionedEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error) {
+func (e *connectionedEndpoint) UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error) {
 	return nil, syserr.ErrConnectionRefused
 }
 
 // Connect attempts to directly connect to another Endpoint.
 // Implements Endpoint.Connect.
-func (e *connectionedEndpoint) Connect(server BoundEndpoint) *syserr.Error {
+func (e *connectionedEndpoint) Connect(ctx context.Context, server BoundEndpoint) *syserr.Error {
 	returnConnect := func(r Receiver, ce ConnectedEndpoint) {
 		e.receiver = r
 		e.connected = ce
 	}
 
-	return server.BidirectionalConnect(e, returnConnect)
+	return server.BidirectionalConnect(ctx, e, returnConnect)
 }
 
 // Listen starts listening on the connection.
@@ -426,13 +432,13 @@ func (e *connectionedEndpoint) Bind(addr tcpip.FullAddress, commit func() *syser
 
 // SendMsg writes data and a control message to the endpoint's peer.
 // This method does not block if the data cannot be written.
-func (e *connectionedEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *connectionedEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
 	// Stream sockets do not support specifying the endpoint. Seqpacket
 	// sockets ignore the passed endpoint.
 	if e.stype == linux.SOCK_STREAM && to != nil {
 		return 0, syserr.ErrNotSupported
 	}
-	return e.baseEndpoint.SendMsg(data, c, to)
+	return e.baseEndpoint.SendMsg(ctx, data, c, to)
 }
 
 // Readiness returns the current readiness of the connectionedEndpoint. For
diff --git a/pkg/sentry/socket/unix/transport/connectionless.go b/pkg/sentry/socket/unix/transport/connectionless.go
index 254148286..cb2b60339 100644
--- a/pkg/sentry/socket/unix/transport/connectionless.go
+++ b/pkg/sentry/socket/unix/transport/connectionless.go
@@ -16,6 +16,7 @@ package transport
 
 import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
+	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/syserr"
 	"gvisor.dev/gvisor/pkg/tcpip"
 	"gvisor.dev/gvisor/pkg/waiter"
@@ -32,8 +33,13 @@ type connectionlessEndpoint struct {
 	baseEndpoint
 }
 
+var (
+	_ = BoundEndpoint((*connectionlessEndpoint)(nil))
+	_ = Endpoint((*connectionlessEndpoint)(nil))
+)
+
 // NewConnectionless creates a new unbound dgram endpoint.
-func NewConnectionless() Endpoint {
+func NewConnectionless(ctx context.Context) Endpoint {
 	ep := &connectionlessEndpoint{baseEndpoint{Queue: &waiter.Queue{}}}
 	ep.receiver = &queueReceiver{readQueue: &queue{ReaderQueue: ep.Queue, WriterQueue: &waiter.Queue{}, limit: initialLimit}}
 	return ep
@@ -72,12 +78,12 @@ func (e *connectionlessEndpoint) Close() {
 }
 
 // BidirectionalConnect implements BoundEndpoint.BidirectionalConnect.
-func (e *connectionlessEndpoint) BidirectionalConnect(ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
+func (e *connectionlessEndpoint) BidirectionalConnect(ctx context.Context, ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
 	return syserr.ErrConnectionRefused
 }
 
 // UnidirectionalConnect implements BoundEndpoint.UnidirectionalConnect.
-func (e *connectionlessEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error) {
+func (e *connectionlessEndpoint) UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error) {
 	e.Lock()
 	r := e.receiver
 	e.Unlock()
@@ -96,12 +102,12 @@ func (e *connectionlessEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *sy
 
 // SendMsg writes data and a control message to the specified endpoint.
 // This method does not block if the data cannot be written.
-func (e *connectionlessEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *connectionlessEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
 	if to == nil {
-		return e.baseEndpoint.SendMsg(data, c, nil)
+		return e.baseEndpoint.SendMsg(ctx, data, c, nil)
 	}
 
-	connected, err := to.UnidirectionalConnect()
+	connected, err := to.UnidirectionalConnect(ctx)
 	if err != nil {
 		return 0, syserr.ErrInvalidEndpointState
 	}
@@ -124,8 +130,8 @@ func (e *connectionlessEndpoint) Type() linux.SockType {
 }
 
 // Connect attempts to connect directly to server.
-func (e *connectionlessEndpoint) Connect(server BoundEndpoint) *syserr.Error {
-	connected, err := server.UnidirectionalConnect()
+func (e *connectionlessEndpoint) Connect(ctx context.Context, server BoundEndpoint) *syserr.Error {
+	connected, err := server.UnidirectionalConnect(ctx)
 	if err != nil {
 		return err
 	}
diff --git a/pkg/sentry/socket/unix/transport/unix.go b/pkg/sentry/socket/unix/transport/unix.go
index a4d41e355..b0765ba55 100644
--- a/pkg/sentry/socket/unix/transport/unix.go
+++ b/pkg/sentry/socket/unix/transport/unix.go
@@ -20,6 +20,7 @@ import (
 	"sync/atomic"
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
+	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/syserr"
 	"gvisor.dev/gvisor/pkg/tcpip"
 	"gvisor.dev/gvisor/pkg/tcpip/buffer"
@@ -120,13 +121,13 @@ type Endpoint interface {
 	// CMTruncated indicates that the numRights hint was used to receive fewer
 	// than the total available SCM_RIGHTS FDs. Additional truncation may be
 	// required by the caller.
-	RecvMsg(data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (recvLen, msgLen uintptr, cm ControlMessages, CMTruncated bool, err *syserr.Error)
+	RecvMsg(ctx context.Context, data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (recvLen, msgLen uintptr, cm ControlMessages, CMTruncated bool, err *syserr.Error)
 
 	// SendMsg writes data and a control message to the endpoint's peer.
 	// This method does not block if the data cannot be written.
 	//
 	// SendMsg does not take ownership of any of its arguments on error.
-	SendMsg([][]byte, ControlMessages, BoundEndpoint) (uintptr, *syserr.Error)
+	SendMsg(context.Context, [][]byte, ControlMessages, BoundEndpoint) (uintptr, *syserr.Error)
 
 	// Connect connects this endpoint directly to another.
 	//
@@ -134,7 +135,7 @@ type Endpoint interface {
 	// endpoint passed in as a parameter.
 	//
 	// The error codes are the same as Connect.
-	Connect(server BoundEndpoint) *syserr.Error
+	Connect(ctx context.Context, server BoundEndpoint) *syserr.Error
 
 	// Shutdown closes the read and/or write end of the endpoint connection
 	// to its peer.
@@ -215,7 +216,7 @@ type BoundEndpoint interface {
 	//
 	// This method will return syserr.ErrConnectionRefused on endpoints with a
 	// type that isn't SockStream or SockSeqpacket.
-	BidirectionalConnect(ep ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error
+	BidirectionalConnect(ctx context.Context, ep ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error
 
 	// UnidirectionalConnect establishes a write-only connection to a unix
 	// endpoint.
@@ -225,7 +226,7 @@ type BoundEndpoint interface {
 	//
 	// This method will return syserr.ErrConnectionRefused on a non-SockDgram
 	// endpoint.
-	UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error)
+	UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error)
 
 	// Passcred returns whether or not the SO_PASSCRED socket option is
 	// enabled on this end.
@@ -776,7 +777,7 @@ func (e *baseEndpoint) Connected() bool {
 }
 
 // RecvMsg reads data and a control message from the endpoint.
-func (e *baseEndpoint) RecvMsg(data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (uintptr, uintptr, ControlMessages, bool, *syserr.Error) {
+func (e *baseEndpoint) RecvMsg(ctx context.Context, data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (uintptr, uintptr, ControlMessages, bool, *syserr.Error) {
 	e.Lock()
 
 	if e.receiver == nil {
@@ -802,7 +803,7 @@ func (e *baseEndpoint) RecvMsg(data [][]byte, creds bool, numRights uintptr, pee
 
 // SendMsg writes data and a control message to the endpoint's peer.
 // This method does not block if the data cannot be written.
-func (e *baseEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *baseEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
 	e.Lock()
 	if !e.Connected() {
 		e.Unlock()
diff --git a/pkg/sentry/socket/unix/unix.go b/pkg/sentry/socket/unix/unix.go
index 58483a279..97db87f3e 100644
--- a/pkg/sentry/socket/unix/unix.go
+++ b/pkg/sentry/socket/unix/unix.go
@@ -363,7 +363,7 @@ func (s *SocketOperations) Connect(t *kernel.Task, sockaddr []byte, blocking boo
 	defer ep.Release()
 
 	// Connect the server endpoint.
-	return s.ep.Connect(ep)
+	return s.ep.Connect(t, ep)
 }
 
 // Writev implements fs.FileOperations.Write.
@@ -372,11 +372,12 @@ func (s *SocketOperations) Write(ctx context.Context, _ *fs.File, src usermem.IO
 	ctrl := control.New(t, s.ep, nil)
 
 	if src.NumBytes() == 0 {
-		nInt, err := s.ep.SendMsg([][]byte{}, ctrl, nil)
+		nInt, err := s.ep.SendMsg(ctx, [][]byte{}, ctrl, nil)
 		return int64(nInt), err.ToError()
 	}
 
 	return src.CopyInTo(ctx, &EndpointWriter{
+		Ctx:      ctx,
 		Endpoint: s.ep,
 		Control:  ctrl,
 		To:       nil,
@@ -387,6 +388,7 @@ func (s *SocketOperations) Write(ctx context.Context, _ *fs.File, src usermem.IO
 // a transport.Endpoint.
 func (s *SocketOperations) SendMsg(t *kernel.Task, src usermem.IOSequence, to []byte, flags int, haveDeadline bool, deadline ktime.Time, controlMessages socket.ControlMessages) (int, *syserr.Error) {
 	w := EndpointWriter{
+		Ctx:      t,
 		Endpoint: s.ep,
 		Control:  controlMessages.Unix,
 		To:       nil,
@@ -486,6 +488,7 @@ func (s *SocketOperations) Read(ctx context.Context, _ *fs.File, dst usermem.IOS
 		return 0, nil
 	}
 	return dst.CopyOutFrom(ctx, &EndpointReader{
+		Ctx:       ctx,
 		Endpoint:  s.ep,
 		NumRights: 0,
 		Peek:      false,
@@ -522,6 +525,7 @@ func (s *SocketOperations) RecvMsg(t *kernel.Task, dst usermem.IOSequence, flags
 	}
 
 	r := EndpointReader{
+		Ctx:       t,
 		Endpoint:  s.ep,
 		Creds:     wantCreds,
 		NumRights: uintptr(numRights),
@@ -635,9 +639,9 @@ func (*provider) Socket(t *kernel.Task, stype linux.SockType, protocol int) (*fs
 	var ep transport.Endpoint
 	switch stype {
 	case linux.SOCK_DGRAM:
-		ep = transport.NewConnectionless()
+		ep = transport.NewConnectionless(t)
 	case linux.SOCK_SEQPACKET, linux.SOCK_STREAM:
-		ep = transport.NewConnectioned(stype, t.Kernel())
+		ep = transport.NewConnectioned(t, stype, t.Kernel())
 	default:
 		return nil, syserr.ErrInvalidArgument
 	}
@@ -660,7 +664,7 @@ func (*provider) Pair(t *kernel.Task, stype linux.SockType, protocol int) (*fs.F
 	}
 
 	// Create the endpoints and sockets.
-	ep1, ep2 := transport.NewPair(stype, t.Kernel())
+	ep1, ep2 := transport.NewPair(t, stype, t.Kernel())
 	s1 := New(t, ep1, stype)
 	s2 := New(t, ep2, stype)
 
diff --git a/pkg/sentry/syscalls/linux/sys_file.go b/pkg/sentry/syscalls/linux/sys_file.go
index b20991192..31c26fd5c 100644
--- a/pkg/sentry/syscalls/linux/sys_file.go
+++ b/pkg/sentry/syscalls/linux/sys_file.go
@@ -2067,7 +2067,7 @@ func MemfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
 	name = memfdPrefix + name
 
 	inode := tmpfs.NewMemfdInode(t, allowSeals)
-	dirent := fs.NewDirent(inode, name)
+	dirent := fs.NewDirent(t, inode, name)
 	// Per Linux, mm/shmem.c:__shmem_file_setup(), memfd files are set up with
 	// FMODE_READ | FMODE_WRITE.
 	file, err := inode.GetFile(t, dirent, fs.FileFlags{Read: true, Write: true})
diff --git a/pkg/sentry/syscalls/linux/sys_inotify.go b/pkg/sentry/syscalls/linux/sys_inotify.go
index 49aff608a..043ecf96c 100644
--- a/pkg/sentry/syscalls/linux/sys_inotify.go
+++ b/pkg/sentry/syscalls/linux/sys_inotify.go
@@ -35,7 +35,7 @@ func InotifyInit1(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
 		return 0, nil, syscall.EINVAL
 	}
 
-	dirent := fs.NewDirent(anon.NewInode(t), "inotify")
+	dirent := fs.NewDirent(t, anon.NewInode(t), "inotify")
 	fileFlags := fs.FileFlags{
 		Read:        true,
 		Write:       true,
diff --git a/pkg/sentry/syscalls/linux/sys_socket.go b/pkg/sentry/syscalls/linux/sys_socket.go
index 4e3c682ed..ccdb079bb 100644
--- a/pkg/sentry/syscalls/linux/sys_socket.go
+++ b/pkg/sentry/syscalls/linux/sys_socket.go
@@ -29,6 +29,7 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/socket/control"
 	"gvisor.dev/gvisor/pkg/sentry/socket/unix/transport"
 	"gvisor.dev/gvisor/pkg/sentry/usermem"
+	"gvisor.dev/gvisor/pkg/syserr"
 	"gvisor.dev/gvisor/pkg/syserror"
 )
 
@@ -61,6 +62,8 @@ const controlLenOffset = 40
 // to the Flags field.
 const flagsOffset = 48
 
+const sizeOfInt32 = 4
+
 // messageHeader64Len is the length of a MessageHeader64 struct.
 var messageHeader64Len = uint64(binary.Size(MessageHeader64{}))
 
@@ -466,7 +469,7 @@ func GetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
 	}
 
 	// Call syscall implementation then copy both value and value len out.
-	v, e := s.GetSockOpt(t, int(level), int(name), int(optLen))
+	v, e := getSockOpt(t, s, int(level), int(name), int(optLen))
 	if e != nil {
 		return 0, nil, e.ToError()
 	}
@@ -487,6 +490,33 @@ func GetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
 	return 0, nil, nil
 }
 
+// getSockOpt tries to handle common socket options, or dispatches to a specific
+// socket implementation.
+func getSockOpt(t *kernel.Task, s socket.Socket, level, name, len int) (interface{}, *syserr.Error) {
+	if level == linux.SOL_SOCKET {
+		switch name {
+		case linux.SO_TYPE, linux.SO_DOMAIN, linux.SO_PROTOCOL:
+			if len < sizeOfInt32 {
+				return nil, syserr.ErrInvalidArgument
+			}
+		}
+
+		switch name {
+		case linux.SO_TYPE:
+			_, skType, _ := s.Type()
+			return int32(skType), nil
+		case linux.SO_DOMAIN:
+			family, _, _ := s.Type()
+			return int32(family), nil
+		case linux.SO_PROTOCOL:
+			_, _, protocol := s.Type()
+			return int32(protocol), nil
+		}
+	}
+
+	return s.GetSockOpt(t, level, name, len)
+}
+
 // SetSockOpt implements the linux syscall setsockopt(2).
 //
 // Note that unlike Linux, enabling SO_PASSCRED does not autobind the socket.
diff --git a/pkg/sentry/time/seqatomic_parameters.go b/pkg/sentry/time/seqatomic_parameters.go
index 89792c56d..1ec221edd 100755
--- a/pkg/sentry/time/seqatomic_parameters.go
+++ b/pkg/sentry/time/seqatomic_parameters.go
@@ -1,11 +1,11 @@
 package time
 
 import (
-	"fmt"
 	"reflect"
 	"strings"
 	"unsafe"
 
+	"fmt"
 	"gvisor.dev/gvisor/third_party/gvsync"
 )
 
diff --git a/runsc/boot/fs.go b/runsc/boot/fs.go
index 588317f4f..67a286212 100644
--- a/runsc/boot/fs.go
+++ b/runsc/boot/fs.go
@@ -76,7 +76,7 @@ func addOverlay(ctx context.Context, conf *Config, lower *fs.Inode, name string,
 	tmpFS := mustFindFilesystem("tmpfs")
 	if !fs.IsDir(lower.StableAttr) {
 		// Create overlay on top of mount file, e.g. /etc/hostname.
-		msrc := fs.NewCachingMountSource(tmpFS, upperFlags)
+		msrc := fs.NewCachingMountSource(ctx, tmpFS, upperFlags)
 		return fs.NewOverlayRootFile(ctx, msrc, lower, upperFlags)
 	}
 
@@ -226,7 +226,7 @@ func mustFindFilesystem(name string) fs.Filesystem {
 // addSubmountOverlay overlays the inode over a ramfs tree containing the given
 // paths.
 func addSubmountOverlay(ctx context.Context, inode *fs.Inode, submounts []string) (*fs.Inode, error) {
-	msrc := fs.NewPseudoMountSource()
+	msrc := fs.NewPseudoMountSource(ctx)
 	mountTree, err := ramfs.MakeDirectoryTree(ctx, msrc, submounts)
 	if err != nil {
 		return nil, fmt.Errorf("creating mount tree: %v", err)
diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go
index 38425f97d..53e61e43d 100644
--- a/runsc/boot/loader.go
+++ b/runsc/boot/loader.go
@@ -206,7 +206,9 @@ func New(args Args) (*Loader, error) {
 	// Create VDSO.
 	//
 	// Pass k as the platform since it is savable, unlike the actual platform.
-	vdso, err := loader.PrepareVDSO(k)
+	//
+	// FIXME(b/109889800): Use non-nil context.
+	vdso, err := loader.PrepareVDSO(nil, k)
 	if err != nil {
 		return nil, fmt.Errorf("creating vdso: %v", err)
 	}