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Add a KASSERT; we expect *from to be a single mbuf (not chained).

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This commit is contained in:
maxv 2018-02-12 16:01:35 +00:00
parent b17a3c6e9a
commit b5bb909d12
1 changed files with 3 additions and 2 deletions
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5
sys/kern/uipc_syscalls.c
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@ -1,4 +1,4 @@
/* $NetBSD: uipc_syscalls.c,v 1.190 2018/01/04 01:42:25 christos Exp $ */
/* $NetBSD: uipc_syscalls.c,v 1.191 2018/02/12 16:01:35 maxv Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@ -61,7 +61,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.190 2018/01/04 01:42:25 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.191 2018/02/12 16:01:35 maxv Exp $");
#ifdef _KERNEL_OPT
#include "opt_pipe.h"
@ -989,6 +989,7 @@ do_sys_recvmsg_so(struct lwp *l, int s, struct socket *so, struct msghdr *mp,
mp->msg_flags &= MSG_USERFLAGS;
error = (*so->so_receive)(so, from, &auio, NULL, control,
&mp->msg_flags);
KASSERT(*from == NULL || (*from)->m_next == NULL);
len -= auio.uio_resid;
*retsize = len;
if (error != 0 && len != 0