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Add to sbappendstream_locked() a check against NULL mbuf, like it is done

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in sbappend_locked() and sbappendrecord_locked().

This is a quick fix to the panic introduced by r274712.

A proper solution should be to make sosend_generic() avoid calling
pru_send() with NULL mbuf for the protocols that do not understand
control messages. Those protocols that understand control messages,
should be able to receive NULL mbuf, if control is non-NULL.
This commit is contained in:
Gleb Smirnoff 2014-12-20 14:19:46 +00:00
parent ca10a8d944
commit b7413232f6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=275955
1 changed files with 3 additions and 0 deletions
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3
sys/kern/uipc_sockbuf.c
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@ -640,6 +640,9 @@ sbappendstream_locked(struct sockbuf *sb, struct mbuf *m, int flags)
{
SOCKBUF_LOCK_ASSERT(sb);
if (m == NULL)
return;
KASSERT(m->m_nextpkt == NULL,("sbappendstream 0"));
KASSERT(sb->sb_mb == sb->sb_lastrecord,("sbappendstream 1"));