Message-ID: <0e6de51b-da1d-43f0-ffae-fb521febbe07@gmail.com>
Date:   Sat, 2 Sep 2023 07:20:55 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Sean Christopherson <seanjc@...gle.com>,
        Janpieter Sollie <janpieter.sollie@...net.be>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>
Subject: Fwd: Uhhuh. NMI received for unknown reason 3d/2d/ on CPU xx

Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> seems to be a regression since 6.5 release:
> the infamous error message from the kernel on this 32c/64t threadripper:
>> [ 2046.269103] perf: interrupt took too long (3141 > 3138), lowering
>> kernel.perf_event_max_sample_rate to 63600
>> [ 2405.049567] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2405.049571] Dazed and confused, but trying to continue
>> [ 2406.902609] Uhhuh. NMI received for unknown reason 2d on CPU 33.
>> [ 2406.902612] Dazed and confused, but trying to continue
>> [ 2423.978918] Uhhuh. NMI received for unknown reason 2d on CPU 33.
>> [ 2423.978921] Dazed and confused, but trying to continue
>> [ 2429.995160] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2429.995163] Dazed and confused, but trying to continue
>> [ 2431.233575] Uhhuh. NMI received for unknown reason 3d on CPU 36.
>> [ 2431.233578] Dazed and confused, but trying to continue
>> [ 2442.382252] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2442.382255] Dazed and confused, but trying to continue
>> [ 2442.725076] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2442.725078] Dazed and confused, but trying to continue
>> [ 2442.732025] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2442.732027] Dazed and confused, but trying to continue
>> [ 2443.666671] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2443.666673] Dazed and confused, but trying to continue
>> [ 2443.756776] Uhhuh. NMI received for unknown reason 3d on CPU 39.
>> [ 2443.756779] Dazed and confused, but trying to continue
>> [ 2443.907309] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2443.907311] Dazed and confused, but trying to continue
>> [ 2444.004281] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2444.004283] Dazed and confused, but trying to continue
>> [ 2444.207944] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2444.207945] Dazed and confused, but trying to continue
>> [ 2444.517408] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2444.517410] Dazed and confused, but trying to continue
>> [ 2444.946941] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2444.946943] Dazed and confused, but trying to continue
>> [ 2445.573807] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2445.573809] Dazed and confused, but trying to continue
>> [ 2445.776108] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2445.776110] Dazed and confused, but trying to continue
>> [ 2445.969029] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2445.969031] Dazed and confused, but trying to continue
>> [ 2446.977458] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2446.977460] Dazed and confused, but trying to continue
>> [ 2447.044329] Uhhuh. NMI received for unknown reason 2d on CPU 46.
>> [ 2447.044331] Dazed and confused, but trying to continue
>> [ 2447.469269] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2447.469271] Dazed and confused, but trying to continue
>> [ 2447.866530] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2447.866531] Dazed and confused, but trying to continue
>> [ 2448.456615] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2448.456617] Dazed and confused, but trying to continue
>> [ 2448.509614] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2448.509616] Dazed and confused, but trying to continue
>> [ 2448.758005] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2448.758007] Dazed and confused, but trying to continue
>> [ 2449.093565] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2449.093567] Dazed and confused, but trying to continue
>> [ 2449.227344] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2449.227346] Dazed and confused, but trying to continue
>> [ 2449.770534] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2449.770535] Dazed and confused, but trying to continue
>> [ 2449.955594] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2449.955596] Dazed and confused, but trying to continue
>> [ 2450.077872] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2450.077874] Dazed and confused, but trying to continue
>> [ 2450.190844] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2450.190846] Dazed and confused, but trying to continue
>> [ 2450.561450] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2450.561452] Dazed and confused, but trying to continue
>> [ 2450.604498] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2450.604500] Dazed and confused, but trying to continue
>> [ 2450.814451] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2450.814453] Dazed and confused, but trying to continue
>> [ 2450.923171] Uhhuh. NMI received for unknown reason 2d on CPU 49.
>> [ 2450.923173] Dazed and confused, but trying to continue
>> [ 2451.084612] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2451.084614] Dazed and confused, but trying to continue
>> [ 2451.793342] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2451.793343] Dazed and confused, but trying to continue
>> [ 2451.793662] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2451.793664] Dazed and confused, but trying to continue
>> [ 2451.926819] Uhhuh. NMI received for unknown reason 3d on CPU 48.
>> [ 2451.926821] Dazed and confused, but trying to continue
>> [ 2452.502583] Uhhuh. NMI received for unknown reason 3d on CPU 49.
>> [ 2452.502585] Dazed and confused, but trying to continue
>> [ 2452.675633] Uhhuh. NMI received for unknown reason 2d on CPU 61.
>> [ 2452.675636] Dazed and confused, but trying to continue
>> [ 2452.974655] Uhhuh. NMI received for unknown reason 2d on CPU 48.
>> [ 2452.974657] Dazed and confused, but trying to continue
>> [ 7065.904855] elogind-daemon[2461]: New session c2 of user janpieter.
> 
> according to dmesg, this happens without any special reason (I didn't even notice)
> some googling points at a ACPI C state problem on AMD CPUs a few years ago
> in 5.14 kernels, I didn't see it.

See Bugzilla for the full thread.

Anyway, I'm adding this regression to be tracked by regzbot:

#regzbot introduced: v6.4..v6.5 https://bugzilla.kernel.org/show_bug.cgi?id=217857

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217857

-- 
An old man doll... just what I always wanted! - Clara

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