From: Leon Romanovsky <leon@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
x86 <x86@kernel.org>, Suresh Siddha <suresh.b.siddha@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/apic: Fix circular locking dependency between console and hrtimer locks
Date: Mon, 27 Apr 2020 18:49:17 +0300 [thread overview]
Message-ID: <20200427154917.GF134660@unreal> (raw)
In-Reply-To: <87v9llosax.fsf@nanos.tec.linutronix.de>
On Mon, Apr 27, 2020 at 05:35:18PM +0200, Thomas Gleixner wrote:
> Leon Romanovsky <leon@kernel.org> writes:
> > But if we are talking about other weirdnesses, I have another splat in my
> > QEMU machine, which is different, but from the same code area.
>
> It's a completely different code area, really. This triggers in
> deactivate_slab().
>
> > [ 1.383968] ACPI: Added _OSI(Module Device)
> > [ 1.385684] ACPI: Added _OSI(Processor Device)
> > [ 1.389345] ACPI: Added _OSI(3.0 _SCP Extensions)
> > [ 1.389345] ACPI: Added _OSI(Processor Aggregator Device)
> > [ 1.393454] ACPI: Added _OSI(Linux-Dell-Video)
> > [ 1.394920] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
> > [ 1.396481] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
> > [ 1.793418] ACPI: 1 ACPI AML tables successfully acquired and loaded
> > [ 1.845452]
> > [ 1.846768] =============================
> > [ 1.849293] [ BUG: Invalid wait context ]
>
> Do you have CONFIG_PROVE_RAW_LOCK_NESTING enabled? If yes, please
> disable it. The Kconfig option explains that this will trigger
> splats.
Yes, I have it enabled.
Thanks for the tip.
>
> If not, then this is mysterious but has absolutely nothing to do with
> the other thing. It's also completely unrelated to ACPI ...
>
> Thanks,
>
> tglx
next prev parent reply other threads:[~2020-04-27 15:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-07 17:09 [PATCH] x86/apic: Fix circular locking dependency between console and hrtimer locks Leon Romanovsky
2020-04-14 5:48 ` Leon Romanovsky
2020-04-14 6:24 ` Ingo Molnar
2020-04-14 7:05 ` Leon Romanovsky
2020-04-23 7:13 ` Leon Romanovsky
2020-04-27 15:35 ` Thomas Gleixner
2020-04-27 15:49 ` Leon Romanovsky [this message]
2020-04-27 11:09 ` Thomas Gleixner
2020-04-27 11:32 ` Leon Romanovsky
2020-04-27 12:59 ` Thomas Gleixner
2020-04-27 13:41 ` Leon Romanovsky
2020-04-27 15:31 ` Thomas Gleixner
2020-04-27 15:54 ` Leon Romanovsky
2020-05-01 18:22 ` [tip: x86/urgent] x86/apic: Move TSC deadline timer debug printk tip-bot2 for Thomas Gleixner
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