All of lore.kernel.org
 help / color / mirror / Atom feed
From: Peter Zijlstra <peterz@infradead.org>
To: lkp@lists.01.org
Subject: Re: [rfcomm_run] WARNING: CPU: 1 PID: 79 at kernel/sched/core.c:7156 __might_sleep()
Date: Thu, 02 Oct 2014 13:09:27 +0200	[thread overview]
Message-ID: <20141002110927.GE2849@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20140930080228.GD9561@wfg-t540p.sh.intel.com>

[-- Attachment #1: Type: text/plain, Size: 800 bytes --]

On Tue, Sep 30, 2014 at 04:02:28PM +0800, Fengguang Wu wrote:
> Hi Peter,
> 
> We possibly find a rfcomm bug (maintainers CCed) exposed by your debug patch
> 
> [    1.861895] NET: Registered protocol family 5
> [    1.862978] Bluetooth: RFCOMM TTY layer initialized
> [    1.863099] ------------[ cut here ]------------
> [    1.863105] WARNING: CPU: 1 PID: 79 at kernel/sched/core.c:7156 __might_sleep+0x17d/0x1a1()
> [    1.863112] do not call blocking ops when !TASK_RUNNING; state=1 set at [<c14dc381>] rfcomm_run+0xdf/0x130e
> [    1.863591]  [<c1058b73>] ? kthread_stop+0x53/0x53
> [    1.864906]  [<c155a411>] dump_stack+0x48/0x60
> [    1.866298]  [<c14dc381>] ? rfcomm_run+0xdf/0x130e

Ha yes, rfcomm_run is a complete buggy mess indeed. Lemme go see what I
can make of it.

WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: Jet Chen <jet.chen@intel.com>, Su Tao <tao.su@intel.com>,
	Yuanhan Liu <yuanhan.liu@intel.com>, LKP <lkp@01.org>,
	linux-kernel@vger.kernel.org,
	Marcel Holtmann <marcel@holtmann.org>,
	Peter Hurley <peter@hurleysoftware.com>
Subject: Re: [rfcomm_run] WARNING: CPU: 1 PID: 79 at kernel/sched/core.c:7156 __might_sleep()
Date: Thu, 2 Oct 2014 13:09:27 +0200	[thread overview]
Message-ID: <20141002110927.GE2849@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20140930080228.GD9561@wfg-t540p.sh.intel.com>

On Tue, Sep 30, 2014 at 04:02:28PM +0800, Fengguang Wu wrote:
> Hi Peter,
> 
> We possibly find a rfcomm bug (maintainers CCed) exposed by your debug patch
> 
> [    1.861895] NET: Registered protocol family 5
> [    1.862978] Bluetooth: RFCOMM TTY layer initialized
> [    1.863099] ------------[ cut here ]------------
> [    1.863105] WARNING: CPU: 1 PID: 79 at kernel/sched/core.c:7156 __might_sleep+0x17d/0x1a1()
> [    1.863112] do not call blocking ops when !TASK_RUNNING; state=1 set at [<c14dc381>] rfcomm_run+0xdf/0x130e
> [    1.863591]  [<c1058b73>] ? kthread_stop+0x53/0x53
> [    1.864906]  [<c155a411>] dump_stack+0x48/0x60
> [    1.866298]  [<c14dc381>] ? rfcomm_run+0xdf/0x130e

Ha yes, rfcomm_run is a complete buggy mess indeed. Lemme go see what I
can make of it.

  reply	other threads:[~2014-10-02 11:09 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-30  8:02 [rfcomm_run] WARNING: CPU: 1 PID: 79 at kernel/sched/core.c:7156 __might_sleep() Fengguang Wu
2014-10-02 11:09 ` Peter Zijlstra [this message]
2014-10-02 11:09   ` Peter Zijlstra
2014-10-02 12:31   ` Peter Zijlstra
2014-10-02 12:31     ` Peter Zijlstra
2014-10-02 12:38     ` Peter Hurley
2014-10-02 12:38       ` Peter Hurley
2014-10-02 12:54       ` Peter Zijlstra
2014-10-02 12:54         ` Peter Zijlstra
2014-10-02 13:05         ` Peter Hurley
2014-10-02 13:05           ` Peter Hurley
2014-10-02 13:41           ` Peter Zijlstra
2014-10-02 13:41             ` Peter Zijlstra
2014-10-02 12:42     ` Peter Zijlstra
2014-10-02 12:42       ` Peter Zijlstra
2014-10-02 13:49       ` Peter Hurley
2014-10-02 13:49         ` Peter Hurley
2014-10-02 13:52         ` Peter Zijlstra
2014-10-02 13:52           ` Peter Zijlstra
2014-10-02 13:58           ` Peter Zijlstra
2014-10-02 13:58             ` Peter Zijlstra
2014-10-02 14:16             ` Peter Hurley
2014-10-02 14:16               ` Peter Hurley
2014-10-02 16:57               ` Peter Zijlstra
2014-10-02 16:57                 ` Peter Zijlstra
2014-10-02 19:18                 ` Oleg Nesterov
2014-10-02 19:18                   ` Oleg Nesterov
2014-10-02 19:11             ` Oleg Nesterov
2014-10-02 19:11               ` Oleg Nesterov
2014-10-02 19:49               ` Peter Hurley
2014-10-02 19:49                 ` Peter Hurley
2014-10-02 19:57               ` Peter Zijlstra
2014-10-02 19:57                 ` Peter Zijlstra
2014-10-02 20:10       ` Oleg Nesterov
2014-10-02 20:10         ` Oleg Nesterov
2014-10-03 11:50         ` Peter Zijlstra
2014-10-03 11:50           ` Peter Zijlstra
2014-10-03 17:56           ` Oleg Nesterov
2014-10-03 17:56             ` Oleg Nesterov
2014-10-03 19:30             ` Oleg Nesterov
2014-10-03 19:30               ` Oleg Nesterov
2014-10-04  8:42               ` Peter Zijlstra
2014-10-04  8:42                 ` Peter Zijlstra
2014-10-06  0:25                 ` Oleg Nesterov
2014-10-06  0:25                   ` Oleg Nesterov
2014-10-06  9:19                   ` Peter Zijlstra
2014-10-06  9:19                     ` Peter Zijlstra
2014-10-06 10:59                     ` Paul E. McKenney
2014-10-06 10:59                       ` Paul E. McKenney
2014-10-06 16:21                     ` Oleg Nesterov
2014-10-06 16:24                       ` Oleg Nesterov
2014-10-04  8:44             ` Peter Zijlstra
2014-10-04  8:44               ` 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=20141002110927.GE2849@worktop.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.