Merge release-20200907.0-67-gb6d165fe9 (automated)

36 files changed, 240 insertions, 93 deletions

diff --git a/pkg/abi/linux/linux_abi_autogen_unsafe.go b/pkg/abi/linux/linux_abi_autogen_unsafe.go
index 1f82c041e..e4afe242a 100644
--- a/pkg/abi/linux/linux_abi_autogen_unsafe.go
+++ b/pkg/abi/linux/linux_abi_autogen_unsafe.go
@@ -1088,7 +1088,7 @@ func (s *Statx) UnmarshalBytes(src []byte) {
 // Packed implements marshal.Marshallable.Packed.
 //go:nosplit
 func (s *Statx) Packed() bool {
-    return s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed()
+    return s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed()
 }
 
 // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -1103,7 +1103,7 @@ func (s *Statx) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (s *Statx) UnmarshalUnsafe(src []byte) {
-    if s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() {
+    if s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() {
         safecopy.CopyOut(unsafe.Pointer(s), src)
     } else {
         // Type Statx doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -1114,7 +1114,7 @@ func (s *Statx) UnmarshalUnsafe(src []byte) {
 // CopyOutN implements marshal.Marshallable.CopyOutN.
 //go:nosplit
 func (s *Statx) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) {
-    if !s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() {
+    if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() {
         // Type Statx doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
         s.MarshalBytes(buf) // escapes: fallback.
@@ -1144,7 +1144,7 @@ func (s *Statx) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error)
 // CopyIn implements marshal.Marshallable.CopyIn.
 //go:nosplit
 func (s *Statx) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
-    if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() {
+    if !s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() {
         // Type Statx doesn't have a packed layout in memory, fall back to UnmarshalBytes.
         buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
         length, err := cc.CopyInBytes(addr, buf) // escapes: okay.
@@ -1170,7 +1170,7 @@ func (s *Statx) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (s *Statx) WriteTo(writer io.Writer) (int64, error) {
-    if !s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() {
+    if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() {
         // Type Statx doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, s.SizeBytes())
         s.MarshalBytes(buf)
@@ -1578,7 +1578,7 @@ func (f *FUSEHeaderIn) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (f *FUSEHeaderIn) UnmarshalUnsafe(src []byte) {
-    if f.Opcode.Packed() && f.Unique.Packed() {
+    if f.Unique.Packed() && f.Opcode.Packed() {
         safecopy.CopyOut(unsafe.Pointer(f), src)
     } else {
         // Type FUSEHeaderIn doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -3296,7 +3296,7 @@ func (i *IPTEntry) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (i *IPTEntry) WriteTo(writer io.Writer) (int64, error) {
-    if !i.IP.Packed() && i.Counters.Packed() {
+    if !i.Counters.Packed() && i.IP.Packed() {
         // Type IPTEntry doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, i.SizeBytes())
         i.MarshalBytes(buf)
@@ -3407,7 +3407,7 @@ func (i *IPTIP) Packed() bool {
 
 // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
 func (i *IPTIP) MarshalUnsafe(dst []byte) {
-    if i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() {
+    if i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
         safecopy.CopyIn(dst, unsafe.Pointer(i))
     } else {
         // Type IPTIP doesn't have a packed layout in memory, fallback to MarshalBytes.
@@ -3428,7 +3428,7 @@ func (i *IPTIP) UnmarshalUnsafe(src []byte) {
 // CopyOutN implements marshal.Marshallable.CopyOutN.
 //go:nosplit
 func (i *IPTIP) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) {
-    if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+    if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() {
         // Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
         i.MarshalBytes(buf) // escapes: fallback.
@@ -3484,7 +3484,7 @@ func (i *IPTIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (i *IPTIP) WriteTo(writer io.Writer) (int64, error) {
-    if !i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() {
+    if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
         // Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, i.SizeBytes())
         i.MarshalBytes(buf)
@@ -4249,7 +4249,7 @@ func (i *IP6TEntry) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, err
 // CopyIn implements marshal.Marshallable.CopyIn.
 //go:nosplit
 func (i *IP6TEntry) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
-    if !i.IPv6.Packed() && i.Counters.Packed() {
+    if !i.Counters.Packed() && i.IPv6.Packed() {
         // Type IP6TEntry doesn't have a packed layout in memory, fall back to UnmarshalBytes.
         buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
         length, err := cc.CopyInBytes(addr, buf) // escapes: okay.
@@ -4405,7 +4405,7 @@ func (i *IP6TIP) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (i *IP6TIP) UnmarshalUnsafe(src []byte) {
-    if i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+    if i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() {
         safecopy.CopyOut(unsafe.Pointer(i), src)
     } else {
         // Type IP6TIP doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -4416,7 +4416,7 @@ func (i *IP6TIP) UnmarshalUnsafe(src []byte) {
 // CopyOutN implements marshal.Marshallable.CopyOutN.
 //go:nosplit
 func (i *IP6TIP) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) {
-    if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+    if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() {
         // Type IP6TIP doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
         i.MarshalBytes(buf) // escapes: fallback.
@@ -4446,7 +4446,7 @@ func (i *IP6TIP) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error)
 // CopyIn implements marshal.Marshallable.CopyIn.
 //go:nosplit
 func (i *IP6TIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
-    if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() {
+    if !i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() {
         // Type IP6TIP doesn't have a packed layout in memory, fall back to UnmarshalBytes.
         buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
         length, err := cc.CopyInBytes(addr, buf) // escapes: okay.
@@ -4472,7 +4472,7 @@ func (i *IP6TIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error)
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (i *IP6TIP) WriteTo(writer io.Writer) (int64, error) {
-    if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+    if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() {
         // Type IP6TIP doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, i.SizeBytes())
         i.MarshalBytes(buf)
@@ -4980,7 +4980,7 @@ func (r *Rusage) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (r *Rusage) UnmarshalUnsafe(src []byte) {
-    if r.UTime.Packed() && r.STime.Packed() {
+    if r.STime.Packed() && r.UTime.Packed() {
         safecopy.CopyOut(unsafe.Pointer(r), src)
     } else {
         // Type Rusage doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -5047,7 +5047,7 @@ func (r *Rusage) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error)
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (r *Rusage) WriteTo(writer io.Writer) (int64, error) {
-    if !r.STime.Packed() && r.UTime.Packed() {
+    if !r.UTime.Packed() && r.STime.Packed() {
         // Type Rusage doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, r.SizeBytes())
         r.MarshalBytes(buf)
@@ -5112,7 +5112,7 @@ func (s *SemidDS) UnmarshalBytes(src []byte) {
 // Packed implements marshal.Marshallable.Packed.
 //go:nosplit
 func (s *SemidDS) Packed() bool {
-    return s.SemCTime.Packed() && s.SemPerm.Packed() && s.SemOTime.Packed()
+    return s.SemPerm.Packed() && s.SemOTime.Packed() && s.SemCTime.Packed()
 }
 
 // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -5127,7 +5127,7 @@ func (s *SemidDS) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (s *SemidDS) UnmarshalUnsafe(src []byte) {
-    if s.SemOTime.Packed() && s.SemCTime.Packed() && s.SemPerm.Packed() {
+    if s.SemPerm.Packed() && s.SemOTime.Packed() && s.SemCTime.Packed() {
         safecopy.CopyOut(unsafe.Pointer(s), src)
     } else {
         // Type SemidDS doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -5138,7 +5138,7 @@ func (s *SemidDS) UnmarshalUnsafe(src []byte) {
 // CopyOutN implements marshal.Marshallable.CopyOutN.
 //go:nosplit
 func (s *SemidDS) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) {
-    if !s.SemOTime.Packed() && s.SemCTime.Packed() && s.SemPerm.Packed() {
+    if !s.SemPerm.Packed() && s.SemOTime.Packed() && s.SemCTime.Packed() {
         // Type SemidDS doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
         s.MarshalBytes(buf) // escapes: fallback.
@@ -5459,12 +5459,12 @@ func (s *ShmidDS) UnmarshalBytes(src []byte) {
 // Packed implements marshal.Marshallable.Packed.
 //go:nosplit
 func (s *ShmidDS) Packed() bool {
-    return s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed()
+    return s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed()
 }
 
 // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
 func (s *ShmidDS) MarshalUnsafe(dst []byte) {
-    if s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() {
+    if s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() {
         safecopy.CopyIn(dst, unsafe.Pointer(s))
     } else {
         // Type ShmidDS doesn't have a packed layout in memory, fallback to MarshalBytes.
@@ -5515,7 +5515,7 @@ func (s *ShmidDS) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error
 // CopyIn implements marshal.Marshallable.CopyIn.
 //go:nosplit
 func (s *ShmidDS) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
-    if !s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed() {
+    if !s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() {
         // Type ShmidDS doesn't have a packed layout in memory, fall back to UnmarshalBytes.
         buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
         length, err := cc.CopyInBytes(addr, buf) // escapes: okay.
@@ -7926,7 +7926,7 @@ func (t *Tms) UnmarshalBytes(src []byte) {
 // Packed implements marshal.Marshallable.Packed.
 //go:nosplit
 func (t *Tms) Packed() bool {
-    return t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed()
+    return t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed()
 }
 
 // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -7941,7 +7941,7 @@ func (t *Tms) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (t *Tms) UnmarshalUnsafe(src []byte) {
-    if t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() {
+    if t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() {
         safecopy.CopyOut(unsafe.Pointer(t), src)
     } else {
         // Type Tms doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -7952,7 +7952,7 @@ func (t *Tms) UnmarshalUnsafe(src []byte) {
 // CopyOutN implements marshal.Marshallable.CopyOutN.
 //go:nosplit
 func (t *Tms) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) {
-    if !t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() {
+    if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() {
         // Type Tms doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := cc.CopyScratchBuffer(t.SizeBytes()) // escapes: okay.
         t.MarshalBytes(buf) // escapes: fallback.
@@ -7982,7 +7982,7 @@ func (t *Tms) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
 // CopyIn implements marshal.Marshallable.CopyIn.
 //go:nosplit
 func (t *Tms) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
-    if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() {
+    if !t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() {
         // Type Tms doesn't have a packed layout in memory, fall back to UnmarshalBytes.
         buf := cc.CopyScratchBuffer(t.SizeBytes()) // escapes: okay.
         length, err := cc.CopyInBytes(addr, buf) // escapes: okay.
@@ -8008,7 +8008,7 @@ func (t *Tms) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (t *Tms) WriteTo(writer io.Writer) (int64, error) {
-    if !t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() {
+    if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() {
         // Type Tms doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, t.SizeBytes())
         t.MarshalBytes(buf)
diff --git a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
index 4e933f2ed..e448fd95d 100644
--- a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
+++ b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
@@ -310,7 +310,7 @@ func (s *Stat) MarshalUnsafe(dst []byte) {
 
 // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
 func (s *Stat) UnmarshalUnsafe(src []byte) {
-    if s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() {
+    if s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
         safecopy.CopyOut(unsafe.Pointer(s), src)
     } else {
         // Type Stat doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -377,7 +377,7 @@ func (s *Stat) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) {
 
 // WriteTo implements io.WriterTo.WriteTo.
 func (s *Stat) WriteTo(writer io.Writer) (int64, error) {
-    if !s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() {
+    if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
         // Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
         buf := make([]byte, s.SizeBytes())
         s.MarshalBytes(buf)
diff --git a/pkg/sentry/fsimpl/devpts/root_inode_refs.go b/pkg/sentry/fsimpl/devpts/root_inode_refs.go
index 4abb66431..051801202 100644
--- a/pkg/sentry/fsimpl/devpts/root_inode_refs.go
+++ b/pkg/sentry/fsimpl/devpts/root_inode_refs.go
@@ -2,10 +2,11 @@ package devpts
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/fuse/inode_refs.go b/pkg/sentry/fsimpl/fuse/inode_refs.go
index 4fb4d4da7..6b9456e1d 100644
--- a/pkg/sentry/fsimpl/fuse/inode_refs.go
+++ b/pkg/sentry/fsimpl/fuse/inode_refs.go
@@ -2,10 +2,11 @@ package fuse
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
index 225f59782..babb3f664 100644
--- a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
+++ b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
@@ -2,10 +2,11 @@ package host
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/host/inode_refs.go b/pkg/sentry/fsimpl/host/inode_refs.go
index 4075eae17..17f90ce4a 100644
--- a/pkg/sentry/fsimpl/host/inode_refs.go
+++ b/pkg/sentry/fsimpl/host/inode_refs.go
@@ -2,10 +2,11 @@ package host
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/kernfs/dentry_refs.go b/pkg/sentry/fsimpl/kernfs/dentry_refs.go
index f99d4941a..79863b3bc 100644
--- a/pkg/sentry/fsimpl/kernfs/dentry_refs.go
+++ b/pkg/sentry/fsimpl/kernfs/dentry_refs.go
@@ -2,10 +2,11 @@ package kernfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
index 2b258010e..478b04bdd 100644
--- a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
+++ b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
@@ -2,10 +2,11 @@ package kernfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
index 467c32752..9431c1506 100644
--- a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
@@ -2,10 +2,11 @@ package proc
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
index 3fcda0948..872b20eb0 100644
--- a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
@@ -2,10 +2,11 @@ package proc
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
index 2da6801c2..c6d9b3522 100644
--- a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
@@ -2,10 +2,11 @@ package proc
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/task_inode_refs.go b/pkg/sentry/fsimpl/proc/task_inode_refs.go
index b6e19844c..714488450 100644
--- a/pkg/sentry/fsimpl/proc/task_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/task_inode_refs.go
@@ -2,10 +2,11 @@ package proc
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
index 6207364e4..22d9cc488 100644
--- a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
@@ -2,10 +2,11 @@ package proc
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/sys/dir_refs.go b/pkg/sentry/fsimpl/sys/dir_refs.go
index 9d15d4c80..89609b198 100644
--- a/pkg/sentry/fsimpl/sys/dir_refs.go
+++ b/pkg/sentry/fsimpl/sys/dir_refs.go
@@ -2,10 +2,11 @@ package sys
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/tmpfs/inode_refs.go b/pkg/sentry/fsimpl/tmpfs/inode_refs.go
index ff5e99c52..dbf0b2766 100644
--- a/pkg/sentry/fsimpl/tmpfs/inode_refs.go
+++ b/pkg/sentry/fsimpl/tmpfs/inode_refs.go
@@ -2,10 +2,11 @@ package tmpfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/fd_table_refs.go b/pkg/sentry/kernel/fd_table_refs.go
index a630289c9..ecba138ac 100644
--- a/pkg/sentry/kernel/fd_table_refs.go
+++ b/pkg/sentry/kernel/fd_table_refs.go
@@ -2,10 +2,11 @@ package kernel
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/fs_context_refs.go b/pkg/sentry/kernel/fs_context_refs.go
index e8bb1e6ee..fb2fde971 100644
--- a/pkg/sentry/kernel/fs_context_refs.go
+++ b/pkg/sentry/kernel/fs_context_refs.go
@@ -2,10 +2,11 @@ package kernel
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/process_group_refs.go b/pkg/sentry/kernel/process_group_refs.go
index 4b257d548..4ed6e6458 100644
--- a/pkg/sentry/kernel/process_group_refs.go
+++ b/pkg/sentry/kernel/process_group_refs.go
@@ -2,10 +2,11 @@ package kernel
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
index 90148bbb2..a0f2fe45c 100644
--- a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
+++ b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
@@ -1,12 +1,12 @@
 package kernel
 
 import (
-	"fmt"
-	"reflect"
-	"strings"
 	"unsafe"
 
+	"fmt"
 	"gvisor.dev/gvisor/pkg/sync"
+	"reflect"
+	"strings"
 )
 
 // SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race
diff --git a/pkg/sentry/kernel/session_refs.go b/pkg/sentry/kernel/session_refs.go
index 204fdd060..f2e1bb797 100644
--- a/pkg/sentry/kernel/session_refs.go
+++ b/pkg/sentry/kernel/session_refs.go
@@ -2,10 +2,11 @@ package kernel
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/shm/shm_refs.go b/pkg/sentry/kernel/shm/shm_refs.go
index 4bffdd0b3..51e07d0b3 100644
--- a/pkg/sentry/kernel/shm/shm_refs.go
+++ b/pkg/sentry/kernel/shm/shm_refs.go
@@ -2,10 +2,11 @@ package shm
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/mm/aio_mappable_refs.go b/pkg/sentry/mm/aio_mappable_refs.go
index 141747137..b99909f07 100644
--- a/pkg/sentry/mm/aio_mappable_refs.go
+++ b/pkg/sentry/mm/aio_mappable_refs.go
@@ -2,10 +2,11 @@ package mm
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/mm/special_mappable_refs.go b/pkg/sentry/mm/special_mappable_refs.go
index 0921a5d18..035bbe690 100644
--- a/pkg/sentry/mm/special_mappable_refs.go
+++ b/pkg/sentry/mm/special_mappable_refs.go
@@ -2,10 +2,11 @@ package mm
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go
index 2e568bc3d..b462924af 100644
--- a/pkg/sentry/socket/netstack/netstack.go
+++ b/pkg/sentry/socket/netstack/netstack.go
@@ -482,8 +482,35 @@ func (s *socketOpsCommon) fetchReadView() *syserr.Error {
 }
 
 // Release implements fs.FileOperations.Release.
-func (s *socketOpsCommon) Release(context.Context) {
+func (s *socketOpsCommon) Release(ctx context.Context) {
+	e, ch := waiter.NewChannelEntry(nil)
+	s.EventRegister(&e, waiter.EventHUp|waiter.EventErr)
+	defer s.EventUnregister(&e)
+
 	s.Endpoint.Close()
+
+	// SO_LINGER option is valid only for TCP. For other socket types
+	// return after endpoint close.
+	if family, skType, _ := s.Type(); skType != linux.SOCK_STREAM || (family != linux.AF_INET && family != linux.AF_INET6) {
+		return
+	}
+
+	var v tcpip.LingerOption
+	if err := s.Endpoint.GetSockOpt(&v); err != nil {
+		return
+	}
+
+	// The case for zero timeout is handled in tcp endpoint close function.
+	// Close is blocked until either:
+	// 1. The endpoint state is not in any of the states: FIN-WAIT1,
+	// CLOSING and LAST_ACK.
+	// 2. Timeout is reached.
+	if v.Enabled && v.Timeout != 0 {
+		t := kernel.TaskFromContext(ctx)
+		start := t.Kernel().MonotonicClock().Now()
+		deadline := start.Add(v.Timeout)
+		t.BlockWithDeadline(ch, true, deadline)
+	}
 }
 
 // Read implements fs.FileOperations.Read.
@@ -1155,7 +1182,16 @@ func getSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, fam
 			return nil, syserr.ErrInvalidArgument
 		}
 
-		linger := linux.Linger{}
+		var v tcpip.LingerOption
+		var linger linux.Linger
+		if err := ep.GetSockOpt(&v); err != nil {
+			return &linger, nil
+		}
+
+		if v.Enabled {
+			linger.OnOff = 1
+		}
+		linger.Linger = int32(v.Timeout.Seconds())
 		return &linger, nil
 
 	case linux.SO_SNDTIMEO:
@@ -1884,7 +1920,10 @@ func setSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, nam
 			socket.SetSockOptEmitUnimplementedEvent(t, name)
 		}
 
-		return nil
+		return syserr.TranslateNetstackError(
+			ep.SetSockOpt(&tcpip.LingerOption{
+				Enabled: v.OnOff != 0,
+				Timeout: time.Second * time.Duration(v.Linger)}))
 
 	case linux.SO_DETACH_FILTER:
 		// optval is ignored.
diff --git a/pkg/sentry/socket/unix/socket_refs.go b/pkg/sentry/socket/unix/socket_refs.go
index 39aaedc7f..dababb85f 100644
--- a/pkg/sentry/socket/unix/socket_refs.go
+++ b/pkg/sentry/socket/unix/socket_refs.go
@@ -2,10 +2,11 @@ package unix
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/socket/unix/transport/queue_refs.go b/pkg/sentry/socket/unix/transport/queue_refs.go
index 4c3dcd13f..0d4e34988 100644
--- a/pkg/sentry/socket/unix/transport/queue_refs.go
+++ b/pkg/sentry/socket/unix/transport/queue_refs.go
@@ -2,10 +2,11 @@ package transport
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/socket/unix/transport/unix.go b/pkg/sentry/socket/unix/transport/unix.go
index cbbdd000f..08504560c 100644
--- a/pkg/sentry/socket/unix/transport/unix.go
+++ b/pkg/sentry/socket/unix/transport/unix.go
@@ -945,8 +945,14 @@ func (e *baseEndpoint) GetSockOptInt(opt tcpip.SockOptInt) (int, *tcpip.Error) {
 
 // GetSockOpt implements tcpip.Endpoint.GetSockOpt.
 func (e *baseEndpoint) GetSockOpt(opt tcpip.GettableSocketOption) *tcpip.Error {
-	log.Warningf("Unsupported socket option: %T", opt)
-	return tcpip.ErrUnknownProtocolOption
+	switch opt.(type) {
+	case *tcpip.LingerOption:
+		return nil
+
+	default:
+		log.Warningf("Unsupported socket option: %T", opt)
+		return tcpip.ErrUnknownProtocolOption
+	}
 }
 
 // LastError implements Endpoint.LastError.
diff --git a/pkg/sentry/time/seqatomic_parameters_unsafe.go b/pkg/sentry/time/seqatomic_parameters_unsafe.go
index 2cb001080..f18440378 100644
--- a/pkg/sentry/time/seqatomic_parameters_unsafe.go
+++ b/pkg/sentry/time/seqatomic_parameters_unsafe.go
@@ -1,12 +1,12 @@
 package time
 
 import (
-	"fmt"
-	"reflect"
-	"strings"
 	"unsafe"
 
+	"fmt"
 	"gvisor.dev/gvisor/pkg/sync"
+	"reflect"
+	"strings"
 )
 
 // SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race
diff --git a/pkg/sentry/vfs/file_description_refs.go b/pkg/sentry/vfs/file_description_refs.go
index 6c7747259..bdd7e6554 100644
--- a/pkg/sentry/vfs/file_description_refs.go
+++ b/pkg/sentry/vfs/file_description_refs.go
@@ -2,10 +2,11 @@ package vfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/vfs/filesystem_refs.go b/pkg/sentry/vfs/filesystem_refs.go
index 96f681831..38a9a986f 100644
--- a/pkg/sentry/vfs/filesystem_refs.go
+++ b/pkg/sentry/vfs/filesystem_refs.go
@@ -2,10 +2,11 @@ package vfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/vfs/mount_namespace_refs.go b/pkg/sentry/vfs/mount_namespace_refs.go
index 4c422c81f..63285fb8e 100644
--- a/pkg/sentry/vfs/mount_namespace_refs.go
+++ b/pkg/sentry/vfs/mount_namespace_refs.go
@@ -2,10 +2,11 @@ package vfs
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/tcpip/link/tun/tun_endpoint_refs.go b/pkg/tcpip/link/tun/tun_endpoint_refs.go
index 9a38142f5..e0595429c 100644
--- a/pkg/tcpip/link/tun/tun_endpoint_refs.go
+++ b/pkg/tcpip/link/tun/tun_endpoint_refs.go
@@ -2,10 +2,11 @@ package tun
 
 import (
 	"fmt"
-	"gvisor.dev/gvisor/pkg/log"
-	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 	"runtime"
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/log"
+	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index 5e34e27ba..b2ddb24ec 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -1194,6 +1194,19 @@ const (
 	TCPTimeWaitReuseLoopbackOnly
 )
 
+// LingerOption is used by SetSockOpt/GetSockOpt to set/get the
+// duration for which a socket lingers before returning from Close.
+//
+// +stateify savable
+type LingerOption struct {
+	Enabled bool
+	Timeout time.Duration
+}
+
+func (*LingerOption) isGettableSocketOption() {}
+
+func (*LingerOption) isSettableSocketOption() {}
+
 // IPPacketInfo is the message structure for IP_PKTINFO.
 //
 // +stateify savable
diff --git a/pkg/tcpip/tcpip_state_autogen.go b/pkg/tcpip/tcpip_state_autogen.go
index 827b27692..034b39c1f 100644
--- a/pkg/tcpip/tcpip_state_autogen.go
+++ b/pkg/tcpip/tcpip_state_autogen.go
@@ -111,6 +111,32 @@ func (x *LinkPacketInfo) StateLoad(m state.Source) {
 	m.Load(1, &x.PktType)
 }
 
+func (x *LingerOption) StateTypeName() string {
+	return "pkg/tcpip.LingerOption"
+}
+
+func (x *LingerOption) StateFields() []string {
+	return []string{
+		"Enabled",
+		"Timeout",
+	}
+}
+
+func (x *LingerOption) beforeSave() {}
+
+func (x *LingerOption) StateSave(m state.Sink) {
+	x.beforeSave()
+	m.Save(0, &x.Enabled)
+	m.Save(1, &x.Timeout)
+}
+
+func (x *LingerOption) afterLoad() {}
+
+func (x *LingerOption) StateLoad(m state.Source) {
+	m.Load(0, &x.Enabled)
+	m.Load(1, &x.Timeout)
+}
+
 func (x *IPPacketInfo) StateTypeName() string {
 	return "pkg/tcpip.IPPacketInfo"
 }
@@ -144,5 +170,6 @@ func init() {
 	state.Register((*FullAddress)(nil))
 	state.Register((*ControlMessages)(nil))
 	state.Register((*LinkPacketInfo)(nil))
+	state.Register((*LingerOption)(nil))
 	state.Register((*IPPacketInfo)(nil))
 }
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index 6d5046a3d..faea7f2bb 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -654,6 +654,9 @@ type endpoint struct {
 
 	// owner is used to get uid and gid of the packet.
 	owner tcpip.PacketOwner
+
+	// linger is used for SO_LINGER socket option.
+	linger tcpip.LingerOption
 }
 
 // UniqueID implements stack.TransportEndpoint.UniqueID.
@@ -1007,6 +1010,26 @@ func (e *endpoint) Close() {
 		return
 	}
 
+	if e.linger.Enabled && e.linger.Timeout == 0 {
+		s := e.EndpointState()
+		isResetState := s == StateEstablished || s == StateCloseWait || s == StateFinWait1 || s == StateFinWait2 || s == StateSynRecv
+		if isResetState {
+			// Close the endpoint without doing full shutdown and
+			// send a RST.
+			e.resetConnectionLocked(tcpip.ErrConnectionAborted)
+			e.closeNoShutdownLocked()
+
+			// Wake up worker to close the endpoint.
+			switch s {
+			case StateSynRecv:
+				e.notifyProtocolGoroutine(notifyClose)
+			default:
+				e.notifyProtocolGoroutine(notifyTickleWorker)
+			}
+			return
+		}
+	}
+
 	// Issue a shutdown so that the peer knows we won't send any more data
 	// if we're connected, or stop accepting if we're listening.
 	e.shutdownLocked(tcpip.ShutdownWrite | tcpip.ShutdownRead)
@@ -1807,6 +1830,11 @@ func (e *endpoint) SetSockOpt(opt tcpip.SettableSocketOption) *tcpip.Error {
 	case *tcpip.SocketDetachFilterOption:
 		return nil
 
+	case *tcpip.LingerOption:
+		e.LockUser()
+		e.linger = *v
+		e.UnlockUser()
+
 	default:
 		return nil
 	}
@@ -2031,6 +2059,11 @@ func (e *endpoint) GetSockOpt(opt tcpip.GettableSocketOption) *tcpip.Error {
 			Port: port,
 		}
 
+	case *tcpip.LingerOption:
+		e.LockUser()
+		*o = e.linger
+		e.UnlockUser()
+
 	default:
 		return tcpip.ErrUnknownProtocolOption
 	}
diff --git a/pkg/tcpip/transport/tcp/tcp_state_autogen.go b/pkg/tcpip/transport/tcp/tcp_state_autogen.go
index bed45e9a1..77e0d0e97 100644
--- a/pkg/tcpip/transport/tcp/tcp_state_autogen.go
+++ b/pkg/tcpip/transport/tcp/tcp_state_autogen.go
@@ -222,6 +222,7 @@ func (x *endpoint) StateFields() []string {
 		"closed",
 		"txHash",
 		"owner",
+		"linger",
 	}
 }
 
@@ -293,6 +294,7 @@ func (x *endpoint) StateSave(m state.Sink) {
 	m.Save(59, &x.closed)
 	m.Save(60, &x.txHash)
 	m.Save(61, &x.owner)
+	m.Save(62, &x.linger)
 }
 
 func (x *endpoint) StateLoad(m state.Source) {
@@ -354,6 +356,7 @@ func (x *endpoint) StateLoad(m state.Source) {
 	m.Load(59, &x.closed)
 	m.Load(60, &x.txHash)
 	m.Load(61, &x.owner)
+	m.Load(62, &x.linger)
 	m.LoadValue(3, new(string), func(y interface{}) { x.loadLastError(y.(string)) })
 	m.LoadValue(10, new(EndpointState), func(y interface{}) { x.loadState(y.(EndpointState)) })
 	m.LoadValue(25, new(unixTime), func(y interface{}) { x.loadRecentTSTime(y.(unixTime)) })