From: Peter Zijlstra <peterz@infradead.org>
To: lkp@lists.01.org
Subject: Re: [lockdep] b09be676e0 BUG: unable to handle kernel NULL pointer dereference at 000001f2
Date: Wed, 04 Oct 2017 11:20:52 +0200 [thread overview]
Message-ID: <20171004092052.ioixdexrsbbwvetr@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20171003171824.te5cxms2hq634tvi@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 375 bytes --]
On Tue, Oct 03, 2017 at 07:18:24PM +0200, Ingo Molnar wrote:
> Yes, I'll do that tomorrow. I was always a bit unhappy about cross-release,
> because it breaks the 'owner task owns the lock' model.
Still, you can get real deadlocks with completions...
> Plus I don't think we found that many real bugs with it
Every bug found is one less bug. It did find a few.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>,
Byungchul Park <byungchul.park@lge.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
LKP <lkp@01.org>, Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [lockdep] b09be676e0 BUG: unable to handle kernel NULL pointer dereference at 000001f2
Date: Wed, 4 Oct 2017 11:20:52 +0200 [thread overview]
Message-ID: <20171004092052.ioixdexrsbbwvetr@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20171003171824.te5cxms2hq634tvi@gmail.com>
On Tue, Oct 03, 2017 at 07:18:24PM +0200, Ingo Molnar wrote:
> Yes, I'll do that tomorrow. I was always a bit unhappy about cross-release,
> because it breaks the 'owner task owns the lock' model.
Still, you can get real deadlocks with completions...
> Plus I don't think we found that many real bugs with it
Every bug found is one less bug. It did find a few.
next prev parent reply other threads:[~2017-10-04 9:20 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 14:06 [lockdep] b09be676e0 BUG: unable to handle kernel NULL pointer dereference at 000001f2 Fengguang Wu
2017-10-03 14:06 ` Fengguang Wu
2017-10-03 14:31 ` Josh Poimboeuf
2017-10-03 14:31 ` Josh Poimboeuf
2017-10-03 14:41 ` Josh Poimboeuf
2017-10-03 14:41 ` Josh Poimboeuf
2017-10-03 15:05 ` Josh Poimboeuf
2017-10-03 15:05 ` Josh Poimboeuf
2017-10-03 16:28 ` Josh Poimboeuf
2017-10-03 16:28 ` Josh Poimboeuf
2017-10-03 17:34 ` Josh Poimboeuf
2017-10-03 17:34 ` Josh Poimboeuf
2017-10-03 21:44 ` Tetsuo Handa
2017-10-03 21:44 ` Tetsuo Handa
2017-10-04 21:06 ` Josh Poimboeuf
2017-10-04 21:06 ` Josh Poimboeuf
2017-10-04 21:30 ` Linus Torvalds
2017-10-04 21:30 ` Linus Torvalds
2017-10-04 22:15 ` Josh Poimboeuf
2017-10-04 22:15 ` Josh Poimboeuf
2017-10-04 22:40 ` Josh Poimboeuf
2017-10-04 22:40 ` Josh Poimboeuf
2017-10-05 11:02 ` Tetsuo Handa
2017-10-05 11:02 ` Tetsuo Handa
2017-10-05 13:57 ` Josh Poimboeuf
2017-10-05 13:57 ` Josh Poimboeuf
2017-10-04 8:34 ` Peter Zijlstra
2017-10-04 8:34 ` Peter Zijlstra
2017-10-10 5:57 ` Byungchul Park
2017-10-10 5:57 ` Byungchul Park
2017-10-03 16:54 ` Linus Torvalds
2017-10-03 16:54 ` Linus Torvalds
2017-10-03 16:57 ` Linus Torvalds
2017-10-03 16:57 ` Linus Torvalds
2017-10-10 5:48 ` Byungchul Park
2017-10-10 5:48 ` Byungchul Park
2017-10-10 16:22 ` Linus Torvalds
2017-10-10 16:22 ` Linus Torvalds
2017-10-10 16:56 ` Linus Torvalds
2017-10-10 16:56 ` Linus Torvalds
2017-10-10 18:14 ` Peter Zijlstra
2017-10-10 18:14 ` Peter Zijlstra
2017-10-10 18:38 ` Linus Torvalds
2017-10-10 18:38 ` Linus Torvalds
2017-10-11 1:14 ` Byungchul Park
2017-10-11 1:14 ` Byungchul Park
2017-10-11 2:36 ` Byungchul Park
2017-10-11 2:36 ` Byungchul Park
2017-10-11 0:56 ` Byungchul Park
2017-10-11 0:56 ` Byungchul Park
2017-10-11 1:02 ` Byungchul Park
2017-10-11 1:02 ` Byungchul Park
2017-10-12 1:15 ` Byungchul Park
2017-10-12 1:15 ` Byungchul Park
2017-10-03 17:18 ` Ingo Molnar
2017-10-03 17:18 ` Ingo Molnar
2017-10-04 9:20 ` Peter Zijlstra [this message]
2017-10-04 9:20 ` Peter Zijlstra
2017-10-04 10:31 ` Ingo Molnar
2017-10-04 10:31 ` Ingo Molnar
2017-10-04 14:15 ` Josh Poimboeuf
2017-10-04 14:15 ` Josh Poimboeuf
2017-10-10 5:30 ` Byungchul Park
2017-10-10 5:30 ` Byungchul Park
2017-10-05 13:01 ` Josh Poimboeuf
2017-10-05 13:01 ` Josh Poimboeuf
2017-10-05 14:54 ` Josh Poimboeuf
2017-10-05 14:54 ` Josh Poimboeuf
2017-10-09 10:50 ` Peter Zijlstra
2017-10-09 10:50 ` Peter Zijlstra
2017-10-09 12:21 ` Fengguang Wu
2017-10-09 12:21 ` Fengguang Wu
2017-10-09 12:54 ` Peter Zijlstra
2017-10-09 12:54 ` Peter Zijlstra
2017-10-09 12:59 ` Fengguang Wu
2017-10-09 12:59 ` Fengguang Wu
2017-10-09 13:03 ` Josh Poimboeuf
2017-10-09 13:03 ` Josh Poimboeuf
2017-10-09 12:55 ` Fengguang Wu
2017-10-09 12:55 ` Fengguang Wu
2017-10-09 13:26 ` Josh Poimboeuf
2017-10-09 13:26 ` Josh Poimboeuf
2017-10-09 14:17 ` Fengguang Wu
2017-10-09 14:17 ` Fengguang Wu
2017-10-09 15:28 ` Peter Zijlstra
2017-10-09 15:28 ` Peter Zijlstra
2017-10-09 15:41 ` Fengguang Wu
2017-10-09 15:41 ` Fengguang Wu
2017-10-09 15:44 ` Peter Zijlstra
2017-10-09 15:44 ` Peter Zijlstra
2017-10-09 15:47 ` Fengguang Wu
2017-10-09 15:47 ` Fengguang Wu
2017-10-10 5:08 ` Byungchul Park
2017-10-10 5:08 ` Byungchul Park
2017-10-12 8:47 ` Peter Zijlstra
2017-10-12 8:47 ` Peter Zijlstra
2017-10-12 9:21 ` Fengguang Wu
2017-10-12 9:21 ` Fengguang Wu
2017-10-12 9:28 ` Fengguang Wu
2017-10-12 9:28 ` Fengguang Wu
2017-10-12 11:45 ` Peter Zijlstra
2017-10-12 11:45 ` Peter Zijlstra
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=20171004092052.ioixdexrsbbwvetr@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=lkp@lists.01.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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.