LKML Archive on lore.kernel.org
 help / color / Atom feed
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
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

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-07 17:09 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200427154917.GF134660@unreal \
    --to=leon@kernel.org \
    --cc=bp@alien8.de \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@kernel.org \
    --cc=mingo@redhat.com \
    --cc=suresh.b.siddha@intel.com \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git
	git clone --mirror https://lore.kernel.org/lkml/9 lkml/git/9.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git