From: Borislav Petkov <bp@amd64.org>
To: Prarit Bhargava <prarit@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Russ Anderson <rja@sgi.com>, "Luck, Tony" <tony.luck@intel.com>,
"dzickus@redhat.com" <dzickus@redhat.com>,
"mstowe@redhat.com" <mstowe@redhat.com>,
"dnelson@redhat.com" <dnelson@redhat.com>,
"rja@americas.sgi.com" <rja@americas.sgi.com>
Subject: Re: [PATCH -v3] x86, MCE: Drop the default decoding notifier
Date: Thu, 14 Apr 2011 21:02:53 +0200 [thread overview]
Message-ID: <20110414190253.GQ10080@aftab> (raw)
In-Reply-To: <4DA71774.9020900@redhat.com>
On Thu, Apr 14, 2011 at 11:49:08AM -0400, Prarit Bhargava wrote:
> > And we don't want to fix that - we want to fix the case with the
> > occasional CE MCEs which get detected in the polling path but none of
> > their MCA regs get dumped for decoding so the decoding hint there is
> > out of place. And we fixed that at least partially so that it doesn't
> > flood the logs. If you're not fine with the default ratelimit of 10 msgs
> > per 5 seconds we can always raise the ratelimit but tweaking an almost
> > hypothetical case is just not worth it.
> >
> Okay -- I'm good then.
Ok, injecting MCEs with this patch looks like this. Nevermind the
decoded MCEs, I simply uncommented the "if (ret != NOTIFY_DONE)" line
so that I can see the rate limiting. So we still have them there, this
is the default setting of 10 calls per 5 secs, we might want to dial it
down in the output. After the 10th MCE, it doesn't appear anymore.
Hmm...
Prarit, you said you have a machine which spits a lot of CECCs on boot,
does the final version help there, did you have a chance to run it?
[ 312.983610] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: 9200400000010e3f
[ 312.987463] [Hardware Error]: TSC 7ca4633c24
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807306 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[-|CE|-|PCC|-|CECC]: 0x9200400000010e3f
[ 312.987463] [Hardware Error]: Data Cache Error:
[ 312.987463] [Hardware Error]: Corrupted DC MCE info?
[ 312.987463] [Hardware Error]: cache level: L3/GEN, mem/io: GEN, mem-tx: DRD, part-proc: GEN (no timeout)
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: d400400000010016
[ 312.987463] [Hardware Error]: TSC 825c93b856
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807321 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[Over|CE|-|-|AddrV|CECC]: 0xd400400000010016
[ 312.987463] [Hardware Error]: Data Cache Error: L2 TLB multimatch.
[ 312.987463] [Hardware Error]: cache level: L2, tx: DATA
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: d40040000000081f
[ 312.987463] [Hardware Error]: TSC 852bb06a47
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807328 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[Over|CE|-|-|AddrV|CECC]: 0xd40040000000081f
[ 312.987463] [Hardware Error]: Data Cache Error:
[ 312.987463] [Hardware Error]: Corrupted DC MCE info?
[ 312.987463] [Hardware Error]: cache level: L3/GEN, mem/io: GEN, mem-tx: RD, part-proc: SRC (no timeout)
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: dc03400008000f43
[ 312.987463] [Hardware Error]: TSC 9a9c3818f3
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807382 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[Over|CE|MiscV|-|AddrV|CECC]: 0xdc03400008000f43
[ 312.987463] [Hardware Error]: Data Cache Error:
[ 312.987463] [Hardware Error]: Corrupted DC MCE info?
[ 312.987463] [Hardware Error]: cache level: L3/GEN, mem/io: MEM, mem-tx: DWR, part-proc: GEN (timed out)
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: f600210000000107
[ 312.987463] [Hardware Error]: TSC 88ce52d026
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807337 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[Over|UE|-|PCC|AddrV|UECC]: 0xf600210000000107
[ 312.987463] [Hardware Error]: Data Cache Error:
[ 312.987463] [Hardware Error]: Corrupted DC MCE info?
[ 312.987463] [Hardware Error]: cache level: L3/GEN, tx: DATA, mem-tx: GEN
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: CPU 0: Machine Check Exception: 0 Bank 0: dc03400008000f43
[ 312.987463] [Hardware Error]: TSC 9a9c3818f3
[ 312.987463] [Hardware Error]: PROCESSOR 2:100f91 TIME 1302807382 SOCKET 0 APIC 0
[ 312.987463] [Hardware Error]: MC0_STATUS[Over|CE|MiscV|-|AddrV|CECC]: 0xdc03400008000f43
[ 312.987463] [Hardware Error]: Data Cache Error:
[ 312.987463] [Hardware Error]: Corrupted DC MCE info?
[ 312.987463] [Hardware Error]: cache level: L3/GEN, mem/io: MEM, mem-tx: DWR, part-proc: GEN (timed out)
[ 312.987463] [Hardware Error]: Run the above through 'mcelog --ascii' <-----------------
[ 312.987463] [Hardware Error]: Machine check: MCIP not set in MCA handler
[ 312.987463] [Hardware Error]: Fake kernel panic: Fatal machine check on current CPU
[ 312.987463] mce_notify_irq: 2 callbacks suppressed
[ 312.987463] [Hardware Error]: Machine check events logged
Thanks.
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2011-04-14 19:03 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-12 17:44 [PATCH]: mce: don't print "human readable" message for corrected errors Prarit Bhargava
2011-04-12 18:58 ` Borislav Petkov
2011-04-12 19:22 ` Prarit Bhargava
2011-04-12 19:57 ` Borislav Petkov
2011-04-12 20:02 ` Luck, Tony
2011-04-12 20:15 ` Prarit Bhargava
2011-04-12 20:28 ` Borislav Petkov
2011-04-13 3:00 ` Russ Anderson
2011-04-13 7:14 ` Borislav Petkov
2011-04-13 13:24 ` Borislav Petkov
2011-04-13 13:36 ` [PATCH 1/3] x86, MCE: Do not taint when correctable errors Borislav Petkov
2011-04-13 13:36 ` [PATCH 2/3] x86, MCE: Drop default decoding notifier Borislav Petkov
2011-04-13 14:01 ` Prarit Bhargava
2011-04-13 14:18 ` Borislav Petkov
2011-04-13 14:22 ` Prarit Bhargava
2011-04-13 14:26 ` Borislav Petkov
2011-04-13 14:32 ` Prarit Bhargava
2011-04-13 14:39 ` Borislav Petkov
2011-04-13 14:45 ` Prarit Bhargava
2011-04-13 14:36 ` [PATCH -v2] " Borislav Petkov
2011-04-13 17:01 ` Prarit Bhargava
2011-04-13 17:13 ` Luck, Tony
2011-04-13 17:17 ` Prarit Bhargava
2011-04-13 17:14 ` Prarit Bhargava
2011-04-13 17:37 ` Borislav Petkov
2011-04-14 14:59 ` Prarit Bhargava
2011-04-14 15:00 ` [PATCH -v3] x86, MCE: Drop the " Borislav Petkov
2011-04-14 15:04 ` Prarit Bhargava
2011-04-14 15:16 ` Borislav Petkov
2011-04-14 15:23 ` Prarit Bhargava
2011-04-14 15:44 ` Borislav Petkov
2011-04-14 15:49 ` Prarit Bhargava
2011-04-14 19:02 ` Borislav Petkov [this message]
2011-04-14 19:04 ` Prarit Bhargava
2011-04-14 15:33 ` Russ Anderson
2011-04-14 15:49 ` Borislav Petkov
2011-04-13 13:36 ` [PATCH 3/3] EDAC, MCE, AMD: Register with MCE core Borislav Petkov
2011-04-13 2:24 ` [PATCH]: mce: don't print "human readable" message for corrected errors Russ Anderson
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