Messages in this thread | | | Date | Mon, 20 Oct 2008 11:15:56 -0200 | From | "Glauber Costa" <> | Subject | Re: [PATCH] NFS regression in 2.6.26?, "task blocked for more than 120 seconds" |
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On Mon, Oct 20, 2008 at 4:51 AM, Max Kellermann <mk@cm4all.com> wrote: > On 2008/10/17 16:33, Glauber Costa <glommer@redhat.com> wrote: >> That's probably something related to apic congestion. >> Does the problem go away if the only thing you change is this: >> >> >> > @@ -891,11 +897,6 @@ do_rest: >> > store_NMI_vector(&nmi_high, &nmi_low); >> > >> > smpboot_setup_warm_reset_vector(start_ip); >> > - /* >> > - * Be paranoid about clearing APIC errors. >> > - */ >> > - apic_write(APIC_ESR, 0); >> > - apic_read(APIC_ESR); >> > } >> >> >> Please let me know. > > Hello Glauber, > > I have rebooted the server with 2.6.27.1 + this patchlet an hour ago. > No problems since. > > Hardware: Compaq P4 Xeon server, Broadcom CMIC-WS / CIOB-X2 board. > Tell me if you need more detailed information. >
There's a patch in flight from cyrill that probably fixes your problem: http://lkml.org/lkml/2008/9/15/93
The checks are obviously there for a reason, and we can't just wipe them out unconditionally ;-) So can you check please that you are also covered by the case provided?
> On 2008/10/20 08:27, Ian Campbell <ijc@hellion.org.uk> wrote: >> The issue I see still occurs well before those changesets. I have >> seen it with v2.6.25 but v2.6.24 survived for 7 days without issue >> (my threshold for a good kernel is 7 days, hence bisecting is a bit >> slow...). > > Hello Ian, > > it seems we're hunting down different bugs after all. Too bad, I > hoped I could have solved your problem, too. Our machine has been > running well over the weekend with the patch I posted; with faulty > kernels, the problem would occur after a few minutes. > > Max > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
-- Glauber Costa. "Free as in Freedom" http://glommer.net
"The less confident you are, the more serious you have to act."
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