syscall: add new CLONE_ flags for Linux

The constants for these were auto-generated from the C includes
into zerrors_linux* files quite some time ago. The generator is
currently broken, but some new flags need to be added nevertheless.

As the flags won't change and the values are the same for all
architectures, we can just define them statically (as it's already
done in the runtime package):

 - remove the CLONE_* constants from zerrors_linux_*.go;
 - patch mkerrors.sh to not generate CLONE_ constants
   (in case it will be fixed and used in the future);
 - add the constants and some comments about them to exec_linux.go,
   using Linux v5.17 include/uapi/sched.h as the ultimate source.

This adds the following new flags:

 - CLONE_CLEAR_SIGHAND
 - CLONE_INTO_CGROUP
 - CLONE_NEWCGROUP
 - CLONE_NEWTIME
 - CLONE_PIDFD

For #51246.

Change-Id: I0c635723926218bd403d37e113ee4d62194463a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/407574
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joedian Reid <joedian@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>

15 files changed, 40 insertions, 293 deletions

diff --git a/src/syscall/exec_linux.go b/src/syscall/exec_linux.go
index 554aad412d..4ae7f33462 100644
--- a/src/syscall/exec_linux.go
+++ b/src/syscall/exec_linux.go
@@ -12,6 +12,45 @@ import (
 	"unsafe"
 )
 
+// Linux unshare/clone/clone2/clone3 flags, architecture-independent,
+// copied from linux/sched.h.
+const (
+	CLONE_VM             = 0x00000100 // set if VM shared between processes
+	CLONE_FS             = 0x00000200 // set if fs info shared between processes
+	CLONE_FILES          = 0x00000400 // set if open files shared between processes
+	CLONE_SIGHAND        = 0x00000800 // set if signal handlers and blocked signals shared
+	CLONE_PIDFD          = 0x00001000 // set if a pidfd should be placed in parent
+	CLONE_PTRACE         = 0x00002000 // set if we want to let tracing continue on the child too
+	CLONE_VFORK          = 0x00004000 // set if the parent wants the child to wake it up on mm_release
+	CLONE_PARENT         = 0x00008000 // set if we want to have the same parent as the cloner
+	CLONE_THREAD         = 0x00010000 // Same thread group?
+	CLONE_NEWNS          = 0x00020000 // New mount namespace group
+	CLONE_SYSVSEM        = 0x00040000 // share system V SEM_UNDO semantics
+	CLONE_SETTLS         = 0x00080000 // create a new TLS for the child
+	CLONE_PARENT_SETTID  = 0x00100000 // set the TID in the parent
+	CLONE_CHILD_CLEARTID = 0x00200000 // clear the TID in the child
+	CLONE_DETACHED       = 0x00400000 // Unused, ignored
+	CLONE_UNTRACED       = 0x00800000 // set if the tracing process can't force CLONE_PTRACE on this clone
+	CLONE_CHILD_SETTID   = 0x01000000 // set the TID in the child
+	CLONE_NEWCGROUP      = 0x02000000 // New cgroup namespace
+	CLONE_NEWUTS         = 0x04000000 // New utsname namespace
+	CLONE_NEWIPC         = 0x08000000 // New ipc namespace
+	CLONE_NEWUSER        = 0x10000000 // New user namespace
+	CLONE_NEWPID         = 0x20000000 // New pid namespace
+	CLONE_NEWNET         = 0x40000000 // New network namespace
+	CLONE_IO             = 0x80000000 // Clone io context
+
+	// Flags for the clone3() syscall.
+
+	CLONE_CLEAR_SIGHAND = 0x100000000 // Clear any signal handler and reset to SIG_DFL.
+	CLONE_INTO_CGROUP   = 0x200000000 // Clone into a specific cgroup given the right permissions.
+
+	// Cloning flags intersect with CSIGNAL so can be used with unshare and clone3
+	// syscalls only:
+
+	CLONE_NEWTIME = 0x00000080 // New time namespace
+)
+
 // SysProcIDMap holds Container ID to Host ID mappings used for User Namespaces in Linux.
 // See user_namespaces(7).
 type SysProcIDMap struct {
diff --git a/src/syscall/mkerrors.sh b/src/syscall/mkerrors.sh
index 92ab4c5f1e..f7d37279ed 100755
--- a/src/syscall/mkerrors.sh
+++ b/src/syscall/mkerrors.sh
@@ -270,6 +270,7 @@ ccflags="$@"
 		$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
 		$2 ~ /^(SCM_SRCRT)$/ {next}
 		$2 ~ /^(MAP_FAILED)$/ {next}
+		$2 ~ /^CLONE_[A-Z_]+/ {next} # These are defined in exec_linux.go.
 		$2 ~ /^ELF_.*$/ {next}	# <asm/elf.h> contains ELF_ARCH, etc.
 
 		$2 !~ /^ETH_/ &&
@@ -317,7 +318,6 @@ ccflags="$@"
 		$2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
 		$2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ ||
 		$2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
-		$2 ~ /^CLONE_[A-Z_]+/ ||
 		$2 !~ /^(BPF_TIMEVAL)$/ &&
 		$2 ~ /^(BPF|DLT)_/ ||
 		$2 !~ "WMESGLEN" &&
diff --git a/src/syscall/zerrors_linux_386.go b/src/syscall/zerrors_linux_386.go
index 5e4c867bc9..045a4166b0 100644
--- a/src/syscall/zerrors_linux_386.go
+++ b/src/syscall/zerrors_linux_386.go
@@ -148,28 +148,6 @@ const (
 	BPF_TXA                          = 0x80
 	BPF_W                            = 0x0
 	BPF_X                            = 0x8
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	DT_BLK                           = 0x6
 	DT_CHR                           = 0x2
 	DT_DIR                           = 0x4
diff --git a/src/syscall/zerrors_linux_amd64.go b/src/syscall/zerrors_linux_amd64.go
index 3ff6e498e7..4eb4474648 100644
--- a/src/syscall/zerrors_linux_amd64.go
+++ b/src/syscall/zerrors_linux_amd64.go
@@ -148,28 +148,6 @@ const (
 	BPF_TXA                          = 0x80
 	BPF_W                            = 0x0
 	BPF_X                            = 0x8
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	DT_BLK                           = 0x6
 	DT_CHR                           = 0x2
 	DT_DIR                           = 0x4
diff --git a/src/syscall/zerrors_linux_arm.go b/src/syscall/zerrors_linux_arm.go
index 35825cc9fb..a5f925ec6d 100644
--- a/src/syscall/zerrors_linux_arm.go
+++ b/src/syscall/zerrors_linux_arm.go
@@ -148,28 +148,6 @@ const (
 	BPF_TXA                          = 0x80
 	BPF_W                            = 0x0
 	BPF_X                            = 0x8
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	DT_BLK                           = 0x6
 	DT_CHR                           = 0x2
 	DT_DIR                           = 0x4
diff --git a/src/syscall/zerrors_linux_arm64.go b/src/syscall/zerrors_linux_arm64.go
index 444b8816d5..ec8ac0708e 100644
--- a/src/syscall/zerrors_linux_arm64.go
+++ b/src/syscall/zerrors_linux_arm64.go
@@ -192,28 +192,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_loong64.go b/src/syscall/zerrors_linux_loong64.go
index 17b109d63e..a28439cf67 100644
--- a/src/syscall/zerrors_linux_loong64.go
+++ b/src/syscall/zerrors_linux_loong64.go
@@ -206,33 +206,6 @@ const (
 	CLONE_ARGS_SIZE_VER0              = 0x40
 	CLONE_ARGS_SIZE_VER1              = 0x50
 	CLONE_ARGS_SIZE_VER2              = 0x58
-	CLONE_CHILD_CLEARTID              = 0x200000
-	CLONE_CHILD_SETTID                = 0x1000000
-	CLONE_CLEAR_SIGHAND               = 0x100000000
-	CLONE_DETACHED                    = 0x400000
-	CLONE_FILES                       = 0x400
-	CLONE_FS                          = 0x200
-	CLONE_INTO_CGROUP                 = 0x200000000
-	CLONE_IO                          = 0x80000000
-	CLONE_NEWCGROUP                   = 0x2000000
-	CLONE_NEWIPC                      = 0x8000000
-	CLONE_NEWNET                      = 0x40000000
-	CLONE_NEWNS                       = 0x20000
-	CLONE_NEWPID                      = 0x20000000
-	CLONE_NEWTIME                     = 0x80
-	CLONE_NEWUSER                     = 0x10000000
-	CLONE_NEWUTS                      = 0x4000000
-	CLONE_PARENT                      = 0x8000
-	CLONE_PARENT_SETTID               = 0x100000
-	CLONE_PIDFD                       = 0x1000
-	CLONE_PTRACE                      = 0x2000
-	CLONE_SETTLS                      = 0x80000
-	CLONE_SIGHAND                     = 0x800
-	CLONE_SYSVSEM                     = 0x40000
-	CLONE_THREAD                      = 0x10000
-	CLONE_UNTRACED                    = 0x800000
-	CLONE_VFORK                       = 0x4000
-	CLONE_VM                          = 0x100
 	CREAD                             = 0x80
 	CS5                               = 0x0
 	CS6                               = 0x10
diff --git a/src/syscall/zerrors_linux_mips.go b/src/syscall/zerrors_linux_mips.go
index d3dae6d84a..3fe5c00757 100644
--- a/src/syscall/zerrors_linux_mips.go
+++ b/src/syscall/zerrors_linux_mips.go
@@ -191,28 +191,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_mips64.go b/src/syscall/zerrors_linux_mips64.go
index 84c9e8fb6f..74a1843ec2 100644
--- a/src/syscall/zerrors_linux_mips64.go
+++ b/src/syscall/zerrors_linux_mips64.go
@@ -189,28 +189,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_mips64le.go b/src/syscall/zerrors_linux_mips64le.go
index 84c9e8fb6f..74a1843ec2 100644
--- a/src/syscall/zerrors_linux_mips64le.go
+++ b/src/syscall/zerrors_linux_mips64le.go
@@ -189,28 +189,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_mipsle.go b/src/syscall/zerrors_linux_mipsle.go
index d3dae6d84a..3fe5c00757 100644
--- a/src/syscall/zerrors_linux_mipsle.go
+++ b/src/syscall/zerrors_linux_mipsle.go
@@ -191,28 +191,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_ppc64.go b/src/syscall/zerrors_linux_ppc64.go
index dd439acc58..b63daea853 100644
--- a/src/syscall/zerrors_linux_ppc64.go
+++ b/src/syscall/zerrors_linux_ppc64.go
@@ -191,28 +191,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x8000
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x800
 	CS5                              = 0x0
 	CS6                              = 0x100
diff --git a/src/syscall/zerrors_linux_ppc64le.go b/src/syscall/zerrors_linux_ppc64le.go
index b71cb0b4e7..01f8adb027 100644
--- a/src/syscall/zerrors_linux_ppc64le.go
+++ b/src/syscall/zerrors_linux_ppc64le.go
@@ -192,28 +192,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x8000
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x800
 	CS5                              = 0x0
 	CS6                              = 0x100
diff --git a/src/syscall/zerrors_linux_riscv64.go b/src/syscall/zerrors_linux_riscv64.go
index 582537d089..f4b1d9ae65 100644
--- a/src/syscall/zerrors_linux_riscv64.go
+++ b/src/syscall/zerrors_linux_riscv64.go
@@ -196,28 +196,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10
diff --git a/src/syscall/zerrors_linux_s390x.go b/src/syscall/zerrors_linux_s390x.go
index cd1aa161e8..8b99a60995 100644
--- a/src/syscall/zerrors_linux_s390x.go
+++ b/src/syscall/zerrors_linux_s390x.go
@@ -193,29 +193,6 @@ const (
 	BRKINT                           = 0x2
 	CFLUSH                           = 0xf
 	CLOCAL                           = 0x800
-	CLONE_CHILD_CLEARTID             = 0x200000
-	CLONE_CHILD_SETTID               = 0x1000000
-	CLONE_DETACHED                   = 0x400000
-	CLONE_FILES                      = 0x400
-	CLONE_FS                         = 0x200
-	CLONE_IO                         = 0x80000000
-	CLONE_NEWCGROUP                  = 0x2000000
-	CLONE_NEWIPC                     = 0x8000000
-	CLONE_NEWNET                     = 0x40000000
-	CLONE_NEWNS                      = 0x20000
-	CLONE_NEWPID                     = 0x20000000
-	CLONE_NEWUSER                    = 0x10000000
-	CLONE_NEWUTS                     = 0x4000000
-	CLONE_PARENT                     = 0x8000
-	CLONE_PARENT_SETTID              = 0x100000
-	CLONE_PTRACE                     = 0x2000
-	CLONE_SETTLS                     = 0x80000
-	CLONE_SIGHAND                    = 0x800
-	CLONE_SYSVSEM                    = 0x40000
-	CLONE_THREAD                     = 0x10000
-	CLONE_UNTRACED                   = 0x800000
-	CLONE_VFORK                      = 0x4000
-	CLONE_VM                         = 0x100
 	CREAD                            = 0x80
 	CS5                              = 0x0
 	CS6                              = 0x10