From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <jirislaby@gmail.com>
Subject: Re: net/bluetooth: workqueue destruction WARNING in
 hci_unregister_dev
To: Tejun Heo <tj@kernel.org>, Dmitry Vyukov <dvyukov@google.com>
References: <CACT4Y+ax7zMOxe+kd4tw5Xdbvt=qPdBhXGO0j7qJwdn5tsfNNg@mail.gmail.com>
 <56C5CE85.6090808@suse.cz>
 <CACT4Y+bVXfY=wBZ+08rq16tHFw9s3YDrE_LCS=to-GF70AffRQ@mail.gmail.com>
 <20160218174427.GG13177@mtj.duckdns.org>
Cc: Marcel Holtmann <marcel@holtmann.org>,
 Gustavo Padovan <gustavo@padovan.org>,
 Johan Hedberg <johan.hedberg@gmail.com>,
 "David S. Miller" <davem@davemloft.net>, linux-bluetooth@vger.kernel.org,
 netdev <netdev@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
 syzkaller <syzkaller@googlegroups.com>, Kostya Serebryany <kcc@google.com>,
 Alexander Potapenko <glider@google.com>, Sasha Levin
 <sasha.levin@oracle.com>, Eric Dumazet <edumazet@google.com>,
 Takashi Iwai <tiwai@suse.com>
From: Jiri Slaby <jslaby@suse.cz>
Message-ID: <56C6EC62.8080107@suse.cz>
Date: Fri, 19 Feb 2016 11:20:18 +0100
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On 02/18/2016, 06:44 PM, Tejun Heo wrote:
> Hello,
> 
> Can you please do the followings?
> 
> 1. Remove WQ_MEM_RECLAIM from the affected workqueue and see whether
>    the problem is reproducible.  WQ_MEM_RECLAIM on anything bluetooth
>    doesn't make sense btw.  Why is it there?
> 
> 2. If WQ_MEM_RECLAIM makes the issue go away, see whether the attached
>    patch works too.

Hello,

1. didn't help, the problem persists. So I haven't applied the patch from 2.

thanks,
-- 
js
suse labs

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jiri Slaby <jslaby-AlSwsSmVLrQ@public.gmane.org>
Subject: Re: net/bluetooth: workqueue destruction WARNING in
 hci_unregister_dev
Date: Fri, 19 Feb 2016 11:20:18 +0100
Message-ID: <56C6EC62.8080107@suse.cz>
References: <CACT4Y+ax7zMOxe+kd4tw5Xdbvt=qPdBhXGO0j7qJwdn5tsfNNg@mail.gmail.com>
 <56C5CE85.6090808@suse.cz>
 <CACT4Y+bVXfY=wBZ+08rq16tHFw9s3YDrE_LCS=to-GF70AffRQ@mail.gmail.com>
 <20160218174427.GG13177@mtj.duckdns.org>
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Cc: Marcel Holtmann <marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>,
	Gustavo Padovan <gustavo-THi1TnShQwVAfugRpC6u6w@public.gmane.org>,
	Johan Hedberg <johan.hedberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
	linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	syzkaller <syzkaller-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>,
	Kostya Serebryany <kcc-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	Alexander Potapenko <glider-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	Sasha Levin <sasha.levin-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
	Eric Dumazet <edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	Takashi Iwai <tiwai-IBi9RG/b67k@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Dmitry Vyukov <dvyukov-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Return-path: <linux-bluetooth-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
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Sender: linux-bluetooth-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-Id: netdev.vger.kernel.org

On 02/18/2016, 06:44 PM, Tejun Heo wrote:
> Hello,
> 
> Can you please do the followings?
> 
> 1. Remove WQ_MEM_RECLAIM from the affected workqueue and see whether
>    the problem is reproducible.  WQ_MEM_RECLAIM on anything bluetooth
>    doesn't make sense btw.  Why is it there?
> 
> 2. If WQ_MEM_RECLAIM makes the issue go away, see whether the attached
>    patch works too.

Hello,

1. didn't help, the problem persists. So I haven't applied the patch from 2.

thanks,
-- 
js
suse labs