Ted Unangst wrote:
> Mike Belopuhov wrote:
> > > So there is something in the tree that doesn't like the mbuf packet
> > > header growth and decides to color outside the lines.
> > >
> >
> > After looking into this with Mark, he has found out that the size of
> > an mbuf structure on armv7 and hppa has exceeded MSIZE (256 bytes).
>
> woah, there's no assert to check that? here's a quickie compile time diff.
ah, there is a CTASSERT macro. thought we had one, but didn't see it.
Index: uipc_mbuf.c
===================================================================
RCS file: /cvs/src/sys/kern/uipc_mbuf.c,v
retrieving revision 1.245
diff -u -p -r1.245 uipc_mbuf.c
--- uipc_mbuf.c 7 Feb 2017 07:00:21 -0000 1.245
+++ uipc_mbuf.c 8 May 2017 01:28:00 -0000
@@ -161,6 +161,8 @@ mbinit(void)
int i;
unsigned int lowbits;
+ CTASSERT(MSIZE >= sizeof(struct mbuf));
+
m_pool_allocator.pa_pagesz = pool_allocator_multi.pa_pagesz;
nmbclust_update();
