Re: Workaround for "fatal firmware error" iwn(4) problem.
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On Fri, May 16, 2014 at 08:06:02PM +0200, Edward Tomasz Napiera?a wrote:
> I've started using FreeBSD laptop and iwn(4) failing at random moments
> like this...
>=20
> May 16 17:11:54 brick kernel: iwn0: iwn_intr: fatal firmware error
> May 16 17:11:54 brick kernel: firmware error log:
> May 16 17:11:54 brick kernel: error type =3D "NMI_INTERRUPT_WDG" (0x=
00000004)
> ...
>=20
> ... has been driving me crazy, so I wrote a workaround. The patch
> can be found here:
>=20
> http://people.freebsd.org/~trasz/iwn.diff
>=20
> I think it's too ugly to commit it as is (I'd never release crap like thi=
s,
> but I know nothing about WiFi and iwn(4) in particular, so I feel justifi=
ed),
> but feedback is still welcome.
On Fri, May 16, 2014 at 08:16:01PM +0200, Edward Tomasz Napiera?a wrote:
> ...
> > For which branch?
>=20
> Ah, forgot about that. 11-HEAD.
So I've been running head/i386 with the above-cited patch for about 1.75
hrs. now -- by which time I would normally expect to have seen my
network connection have dropped -- and it's been quite steady, even
through listening to a streaming audio program for about an hour.
I'm hoping that this at least helps indicate what might be going wrong
(without the patch).
For reference (in somewhat more detail): I had built:
FreeBSD 11.0-CURRENT #1250 r266209M/266213:1100021: Fri May 16 06:24:39 PD=
T 2014 root@g1-252.catwhisker.org:/common/S4/obj/usr/src/sys/CANARY i3=
86
yesterday (on my "head" slice on this laptop); this morning, I
updated the src working copy to r266297 without incident (save for
the occasional, and expected, dropping of the network connection
on occasion). I then rebooted, and verified that
FreeBSD 11.0-CURRENT #1251 r266297M/266298:1100021: Sat May 17 09:17:53 PD=
T 2014 root@g1-252.catwhisker.org:/common/S4/obj/usr/src/sys/CANARY i3=
86
seemed to function pretty much the same (which it did).
I then "cloned" the file systems on my head slice to another slice,
used "svn patch" to apply the patch:
Script started on Sat May 17 09:53:48 2014
command: svn patch tmp/iwn.diff /usr/src
U /usr/src/sys/dev/iwn/if_iwn.c
Script done on Sat May 17 09:53:48 2014
then ran "cd /usr/src && make -DNOCLEAN -j4 kernel"; the result was:
FreeBSD 11.0-CURRENT #1252 r266297M/266298:1100021: Sat May 17 09:56:18 PD=
T 2014 root@g1-252.catwhisker.org:/common/S2/obj/usr/src/sys/CANARY i3=
86
(which is what I've been running for almost 2 hrs. now).
Peace,
david
--=20
David H. Wolfskill david@catwhisker.org
Taliban: Evil cowards with guns afraid of truth from a 14-year old girl.
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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