linux-kernel - Re: [lockdep] b09be676e0 BUG: unable to handle kernel NULL pointer dereference at 000001f2

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Message-ID: <20171009152847.kwo5ifr4lftgm6va@hirez.programming.kicks-ass.net>
Date:   Mon, 9 Oct 2017 17:28:47 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Fengguang Wu <fengguang.wu@...el.com>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Byungchul Park <byungchul.park@....com>,
        Ingo Molnar <mingo@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        LKP <lkp@...org>
Subject: Re: [lockdep] b09be676e0 BUG: unable to handle kernel NULL pointer
 dereference at 000001f2

On Mon, Oct 09, 2017 at 10:17:06PM +0800, Fengguang Wu wrote:
> It works! I tried 500 boots and only find 1 occurrence of this error,
> which looks irrelevant to the current issue.

OK, I'll go write a Changelog for the lockdep patch.


> 
> [  187.855027] init: plymouth-splash main process (418) terminated with status 1
> [  187.953296] init: networking main process (419) terminated with status 1
> [  191.697721] ------------[ cut here ]------------
> [  191.699318] WARNING: CPU: 0 PID: 424 at kernel/locking/lockdep.c:3928 check_flags+0x119/0x1b0

Would still like to get around sorting that one though.