linux-kernel - Re: "cat /proc/lockdep" after "rmmod <some module>" when !debug

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Message-ID: <1553533600.118779.12.camel@acm.org>
Date:   Mon, 25 Mar 2019 10:06:40 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     shenghui <shhuiw@...mail.com>, peterz@...radead.org,
        mingo@...hat.com, will.deacon@....com, linux-kernel@...r.kernel.org
Subject: Re: "cat /proc/lockdep" after "rmmod <some module>" when
 !debug_locks will crash the system

On Mon, 2019-03-25 at 17:45 +0800, shenghui wrote:
> I installed virtualbox-5.2.24 on my system (x86 32) and on bootup I got some warning:
> ---------------------
> 1251 [   42.640869] DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled)
> 1252 [   42.640880] WARNING: CPU: 0 PID: 841 at kernel/locking/lockdep.c:4132 check_flags.part.45+0x9e/0x190
> ...

Hi Shenghui,

That warning should have been followed by a call trace. Please share that
call trace.

Thanks,

Bart.