diff --git a/src/pkg/syscall/mkerrors.sh b/src/pkg/syscall/mkerrors.sh
index 2f1c7512fe9..9bb359fc0ca 100755
--- a/src/pkg/syscall/mkerrors.sh
+++ b/src/pkg/syscall/mkerrors.sh
@@ -119,7 +119,7 @@ done
 		$2 ~ /^E[A-Z0-9_]+$/ ||
 		$2 ~ /^SIG[^_]/ ||
 		$2 ~ /^IN_/ ||
-		$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL)_/ ||
+		$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV)_/ ||
 		$2 == "SOMAXCONN" ||
 		$2 == "NAME_MAX" ||
 		$2 == "IFNAMSIZ" ||
diff --git a/src/pkg/syscall/zerrors_linux_386.go b/src/pkg/syscall/zerrors_linux_386.go
index a0e14b2a37d..3fc7cc73832 100644
--- a/src/pkg/syscall/zerrors_linux_386.go
+++ b/src/pkg/syscall/zerrors_linux_386.go
@@ -48,6 +48,15 @@ const (
 	AF_UNSPEC                        = 0
 	AF_WANPIPE                       = 0x19
 	AF_X25                           = 0x9
+	DT_BLK                           = 0x6
+	DT_CHR                           = 0x2
+	DT_DIR                           = 0x4
+	DT_FIFO                          = 0x1
+	DT_LNK                           = 0xa
+	DT_REG                           = 0x8
+	DT_SOCK                          = 0xc
+	DT_UNKNOWN                       = 0
+	DT_WHT                           = 0xe
 	E2BIG                            = 0x7
 	EACCES                           = 0xd
 	EADDRINUSE                       = 0x62
@@ -418,6 +427,17 @@ const (
 	LINUX_REBOOT_CMD_SW_SUSPEND      = 0xd000fce2
 	LINUX_REBOOT_MAGIC1              = 0xfee1dead
 	LINUX_REBOOT_MAGIC2              = 0x28121969
+	MADV_DOFORK                      = 0xb
+	MADV_DONTFORK                    = 0xa
+	MADV_DONTNEED                    = 0x4
+	MADV_HWPOISON                    = 0x64
+	MADV_MERGEABLE                   = 0xc
+	MADV_NORMAL                      = 0
+	MADV_RANDOM                      = 0x1
+	MADV_REMOVE                      = 0x9
+	MADV_SEQUENTIAL                  = 0x2
+	MADV_UNMERGEABLE                 = 0xd
+	MADV_WILLNEED                    = 0x3
 	MAP_32BIT                        = 0x40
 	MAP_ANON                         = 0x20
 	MAP_ANONYMOUS                    = 0x20
diff --git a/src/pkg/syscall/zerrors_linux_amd64.go b/src/pkg/syscall/zerrors_linux_amd64.go
index 122ac8b79c6..d5efdf55d62 100644
--- a/src/pkg/syscall/zerrors_linux_amd64.go
+++ b/src/pkg/syscall/zerrors_linux_amd64.go
@@ -48,6 +48,15 @@ const (
 	AF_UNSPEC                        = 0
 	AF_WANPIPE                       = 0x19
 	AF_X25                           = 0x9
+	DT_BLK                           = 0x6
+	DT_CHR                           = 0x2
+	DT_DIR                           = 0x4
+	DT_FIFO                          = 0x1
+	DT_LNK                           = 0xa
+	DT_REG                           = 0x8
+	DT_SOCK                          = 0xc
+	DT_UNKNOWN                       = 0
+	DT_WHT                           = 0xe
 	E2BIG                            = 0x7
 	EACCES                           = 0xd
 	EADDRINUSE                       = 0x62
@@ -418,6 +427,17 @@ const (
 	LINUX_REBOOT_CMD_SW_SUSPEND      = 0xd000fce2
 	LINUX_REBOOT_MAGIC1              = 0xfee1dead
 	LINUX_REBOOT_MAGIC2              = 0x28121969
+	MADV_DOFORK                      = 0xb
+	MADV_DONTFORK                    = 0xa
+	MADV_DONTNEED                    = 0x4
+	MADV_HWPOISON                    = 0x64
+	MADV_MERGEABLE                   = 0xc
+	MADV_NORMAL                      = 0
+	MADV_RANDOM                      = 0x1
+	MADV_REMOVE                      = 0x9
+	MADV_SEQUENTIAL                  = 0x2
+	MADV_UNMERGEABLE                 = 0xd
+	MADV_WILLNEED                    = 0x3
 	MAP_32BIT                        = 0x40
 	MAP_ANON                         = 0x20
 	MAP_ANONYMOUS                    = 0x20
diff --git a/src/pkg/syscall/zsysnum_linux_386.go b/src/pkg/syscall/zsysnum_linux_386.go
index 55529adaa71..71e21c7a582 100644
--- a/src/pkg/syscall/zsysnum_linux_386.go
+++ b/src/pkg/syscall/zsysnum_linux_386.go
@@ -1,4 +1,4 @@
-// mksysnum_linux.sh /usr/include/asm/unistd_32.h
+// mksysnum_linux.pl /usr/include/asm/unistd_32.h
 // MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
 
 package syscall
diff --git a/src/pkg/syscall/zsysnum_linux_amd64.go b/src/pkg/syscall/zsysnum_linux_amd64.go
index 2621999c758..77d4eea9e70 100644
--- a/src/pkg/syscall/zsysnum_linux_amd64.go
+++ b/src/pkg/syscall/zsysnum_linux_amd64.go
@@ -1,4 +1,4 @@
-// mksysnum_linux.sh /usr/include/asm/unistd_64.h
+// mksysnum_linux.pl /usr/include/asm/unistd_64.h
 // MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
 
 package syscall