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Date:      Tue, 25 Aug 2015 12:55:02 -0700
From:      Sean Bruno <sbruno@freebsd.org>
To:        Joel Dahl <joel@vnode.se>
Cc:        current@freebsd.org
Subject:   Re: Kernel panic with fresh current, probably nfs related
Message-ID:  <55DCC816.603@freebsd.org>
In-Reply-To: <20150825191006.GA89428@ymer.vnode.se>
References:  <20150822115519.GA79434@ymer.vnode.se> <914810061.28949434.1440248260373.JavaMail.zimbra@uoguelph.ca> <55D8BEB6.7090202@freebsd.org> <20150824013636.GA1015@michelle.fasterthan.com> <55DB5FD8.1010308@freebsd.org> <20150825191006.GA89428@ymer.vnode.se>

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On 08/25/15 12:10, Joel Dahl wrote:
>> > Seems to work. However, I cannot reproduce the user panic in the first
>> > place.  What's the scenario that seems to work here?  NFS seems happy
>> > with/without the patch so I'm not confident in anything we are doing her
>> > e.
> I see several patches here. Which one should I be using?

This:

Index: sys/dev/e1000/if_em.c
===================================================================
--- sys/dev/e1000/if_em.c	(revision 287087)
+++ sys/dev/e1000/if_em.c	(working copy)
@@ -3044,7 +3044,7 @@ em_setup_interface(device_t dev, struct adapter *a
 	if_setioctlfn(ifp, em_ioctl);
 	if_setgetcounterfn(ifp, em_get_counter);
 	/* TSO parameters */
-	ifp->if_hw_tsomax = EM_TSO_SIZE;
+	ifp->if_hw_tsomax = IP_MAXPACKET;
 	ifp->if_hw_tsomaxsegcount = EM_MAX_SCATTER;
 	ifp->if_hw_tsomaxsegsize = EM_TSO_SEG_SIZE;



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