Index: head/sys/compat/linux/linux_errno.h
===================================================================
--- head/sys/compat/linux/linux_errno.h
+++ head/sys/compat/linux/linux_errno.h
@@ -180,4 +180,8 @@
 #define	LINUX_ERFKILL		132
 #define	LINUX_EHWPOISON		133
 
+#ifdef _KERNEL
+#define	LINUX_ELAST		LINUX_EHWPOISON
+#endif
+
 #endif /* _LINUX_ERRNO_H_ */
Index: head/sys/compat/linux/linux_errno.c
===================================================================
--- head/sys/compat/linux/linux_errno.c
+++ head/sys/compat/linux/linux_errno.c
@@ -31,5 +31,11 @@
 		KASSERT(linux_errtbl[i] != 0,
 		    ("%s: linux_errtbl[%d] == 0", __func__, i));
 	}
+
+	for (i = 1; i < nitems(linux_to_bsd_errtbl); i++) {
+		KASSERT(linux_to_bsd_errtbl[i] != 0,
+		    ("%s: linux_to_bsd_errtbl[%d] == 0", __func__, i));
+	}
+
 }
 #endif
Index: head/sys/compat/linux/linux_errno.inc
===================================================================
--- head/sys/compat/linux/linux_errno.inc
+++ head/sys/compat/linux/linux_errno.inc
@@ -160,3 +160,170 @@
 
 _Static_assert(ELAST == 97,
     "missing errno entries in linux_errtbl");
+
+static const int linux_to_bsd_errtbl[LINUX_ELAST + 1] = {
+	/* [0, 9] */
+	[0] = 0,
+	[LINUX_EPERM] = EPERM,
+	[LINUX_ENOENT] = ENOENT,
+	[LINUX_ESRCH] = ESRCH,
+	[LINUX_EINTR] = EINTR,
+	[LINUX_EIO] = EIO,
+	[LINUX_ENXIO] = ENXIO,
+	[LINUX_E2BIG] = E2BIG,
+	[LINUX_ENOEXEC] = ENOENT,
+	[LINUX_EBADF] = EBADF,
+
+	/* [10, 19] */
+	[LINUX_ECHILD] = ECHILD,
+	[LINUX_EAGAIN] = EAGAIN,
+	[LINUX_ENOMEM] = ENOMEM,
+	[LINUX_EACCES] = EACCES,
+	[LINUX_EFAULT] = EFAULT,
+	[LINUX_ENOTBLK] = ENOTBLK,
+	[LINUX_EBUSY] = EBUSY,
+	[LINUX_EEXIST] = EEXIST,
+	[LINUX_EXDEV] = EXDEV,
+	[LINUX_ENODEV] = ENODEV,
+
+	/* [20, 29] */
+	[LINUX_ENOTDIR] = ENOTDIR,
+	[LINUX_EISDIR] = EISDIR,
+	[LINUX_EINVAL] = EINVAL,
+	[LINUX_ENFILE] = ENFILE,
+	[LINUX_EMFILE] = EMFILE,
+	[LINUX_ENOTTY] = ENOTTY,
+	[LINUX_ETXTBSY] = ETXTBSY,
+	[LINUX_EFBIG] = EFBIG,
+	[LINUX_ENOSPC] = ENOSPC,
+	[LINUX_ESPIPE] = ESPIPE,
+
+	/* [30, 39] */
+	[LINUX_EROFS] = EROFS,
+	[LINUX_EMLINK] = EMLINK,
+	[LINUX_EPIPE] = EPIPE,
+	[LINUX_EDOM] = EDOM,
+	[LINUX_ERANGE] = ERANGE,
+	[LINUX_EDEADLK] = EDEADLK,
+	[LINUX_ENAMETOOLONG] = ENAMETOOLONG,
+	[LINUX_ENOLCK] = ENOLCK,
+	[LINUX_ENOSYS] = ENOSYS,
+	[LINUX_ENOTEMPTY] = ENOTEMPTY,
+
+	/* [40, 49] */
+	[LINUX_ELOOP] = ELOOP,
+	[41] = EINVAL,
+	[LINUX_ENOMSG] = ENOMSG,
+	[LINUX_EIDRM] = EIDRM,
+	[LINUX_ECHRNG] = EINVAL,	/* XXX */
+	[LINUX_EL2NSYNC] = EINVAL,	/* XXX */
+	[LINUX_EL3HLT] = EINVAL,	/* XXX */
+	[LINUX_EL3RST] = EINVAL,	/* XXX */
+	[LINUX_ELNRNG] = EINVAL,	/* XXX */
+	[LINUX_EUNATCH] = EINVAL,	/* XXX */
+
+	/* [50, 59] */
+	[LINUX_ENOCSI] = EINVAL,	/* XXX */
+	[LINUX_EL2HLT] = EINVAL,	/* XXX */
+	[LINUX_EBADE] = EINVAL,		/* XXX */
+	[LINUX_EBADR] = EINVAL,		/* XXX */
+	[LINUX_EXFULL] = EINVAL,	/* XXX */
+	[LINUX_ENOANO] = EINVAL,	/* XXX */
+	[LINUX_EBADRQC] = EINVAL,	/* XXX */
+	[LINUX_EBADSLT] = EINVAL,	/* XXX */
+	[58] = EINVAL,
+	[LINUX_EBFONT] = EINVAL,	/* XXX */
+
+	/* [60, 69] */
+	[LINUX_ENOSTR] = EINVAL,	/* XXX */
+	[LINUX_ENODATA] = ENOATTR,	/* XXX */
+	[LINUX_ENOTIME] = EINVAL,	/* XXX */
+	[LINUX_ENOSR] = EINVAL,		/* XXX */
+	[LINUX_ENONET] = EINVAL,	/* XXX */
+	[LINUX_ENOPKG] = EINVAL,	/* XXX */
+	[LINUX_EREMOTE] = EREMOTE,
+	[LINUX_ENOLINK] = ENOLINK,
+	[LINUX_EADV] = EINVAL,		/* XXX */
+	[LINUX_ESRMNT] = EINVAL,	/* XXX */
+
+	/* [70, 79] */
+	[LINUX_ECOMM] = EINVAL,		/* XXX */
+	[LINUX_EPROTO] = EPROTO,
+	[LINUX_EMULTIHOP] = EMULTIHOP,
+	[LINUX_EDOTDOT] = EINVAL,	/* XXX */
+	[LINUX_EBADMSG] = EBADMSG,
+	[LINUX_EOVERFLOW] = EOVERFLOW,
+	[LINUX_ENOTUNIQ] = EINVAL,	/* XXX */
+	[LINUX_EBADFD] = EBADF,		/* XXX */
+	[LINUX_EREMCHG] = EINVAL,	/* XXX */
+	[LINUX_ELIBACC] = EINVAL,	/* XXX */
+
+	/* [80, 89] */
+	[LINUX_ELIBBAD] = EINVAL,	/* XXX */
+	[LINUX_ELIBSCN] = EINVAL,	/* XXX */
+	[LINUX_ELIBMAX] = EINVAL,	/* XXX */
+	[LINUX_ELIBEXEC] = EINVAL,	/* XXX */
+	[LINUX_EILSEQ] = EILSEQ,
+	[LINUX_ERESTART] = EAGAIN,	/* XXX */
+	[LINUX_ESTRPIPE] = EINVAL,	/* XXX */
+	[LINUX_EUSERS] = EUSERS,
+	[LINUX_ENOTSOCK] = ENOTSOCK,
+	[LINUX_EDESTADDRREQ] = EDESTADDRREQ,
+
+	/* [90, 99] */
+	[LINUX_EMSGSIZE] = EMSGSIZE,
+	[LINUX_EPROTOTYPE] = EPROTOTYPE,
+	[LINUX_ENOPROTOOPT] = ENOPROTOOPT,
+	[LINUX_EPROTONOTSUPPORT] = EPROTONOSUPPORT,
+	[LINUX_ESOCKNOTSUPPORT] = EPROTONOSUPPORT,	/* XXX */
+	[LINUX_EOPNOTSUPPORT] = EOPNOTSUPP,
+	[LINUX_EPFNOTSUPPORT] = EPFNOSUPPORT,
+	[LINUX_EAFNOTSUPPORT] = EAFNOSUPPORT,
+	[LINUX_EADDRINUSE] = EADDRINUSE,
+	[LINUX_EADDRNOTAVAIL] = EADDRNOTAVAIL,
+
+	/* [100, 109] */
+	[LINUX_ENETDOWN] = ENETDOWN,
+	[LINUX_ENETUNREACH] = ENETUNREACH,
+	[LINUX_ENETRESET] = ENETRESET,
+	[LINUX_ECONNABORTED] = ECONNABORTED,
+	[LINUX_ECONNRESET] = ECONNRESET,
+	[LINUX_ENOBUFS] = ENOBUFS,
+	[LINUX_EISCONN] = EISCONN,
+	[LINUX_ENOTCONN] = ENOTCONN,
+	[LINUX_ESHUTDOWN] = ESHUTDOWN,
+	[LINUX_ETOOMANYREFS] = ETOOMANYREFS,
+
+	/* [110, 119] */
+	[LINUX_ETIMEDOUT] = ETIMEDOUT,
+	[LINUX_ECONNREFUSED] = ECONNREFUSED,
+	[LINUX_EHOSTDOWN] = EHOSTDOWN,
+	[LINUX_EHOSTUNREACH] = EHOSTUNREACH,
+	[LINUX_EALREADY] = EALREADY,
+	[LINUX_EINPROGRESS] = EINPROGRESS,
+	[LINUX_ESTALE] = ESTALE,
+	[LINUX_EUCLEAN] = EINVAL,		/* XXX */
+	[LINUX_ENOTNAM] = EINVAL,		/* XXX */
+	[LINUX_ENAVAIL] = EINVAL,		/* XXX */
+
+	/* [120, 129] */
+	[LINUX_EISNAM] = EINVAL,		/* XXX */
+	[LINUX_EREMOTEIO] = EINVAL,		/* XXX */
+	[LINUX_EDQUOT] = EDQUOT,
+	[LINUX_ENOMEDIUM] = EIO,		/* XXX */
+	[LINUX_EMEDIUMTYPE] = EIO,		/* XXX */
+	[LINUX_ECANCELED] = ECANCELED,
+	[LINUX_ENOKEY] = EIO,			/* XXX */
+	[LINUX_EKEYEXPIRED] = EIO,		/* XXX */
+	[LINUX_EKEYREVOKED] = EIO,		/* XXX */
+	[LINUX_EKEYREJECTED] = EIO,		/* XXX */
+
+	/* [130, 139] */
+	[LINUX_EOWNERDEAD] = EOWNERDEAD,
+	[LINUX_ENOTRECOVERABLE] = ENOTRECOVERABLE,
+	[LINUX_ERFKILL] = ENETDOWN,		/* XXX */
+	[LINUX_EHWPOISON] = EINVAL,		/* XXX */
+};
+
+_Static_assert(LINUX_ELAST == 133,
+    "missing errno entries in linux_to_bsd_errtbl");