linux-kernel - Re: linux-next: Tree for Aug 7 [ call-trace on suspend: ext4

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Message-ID: <CAMbhsRT6eki+oY4D-iRJz2iqS+N3YBmnC0eP4bMN69cbgj=UsQ@mail.gmail.com>
Date:	Wed, 7 Aug 2013 16:34:08 -0700
From:	Colin Cross <ccross@...roid.com>
To:	sedat.dilek@...il.com
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	"Theodore Ts'o" <tytso@....edu>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: linux-next: Tree for Aug 7 [ call-trace on suspend: ext4 | pm
 related ? ]

On Wed, Aug 7, 2013 at 4:15 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> On Thu, Aug 8, 2013 at 12:58 AM, Colin Cross <ccross@...roid.com> wrote:
>> Can you try add a call to show_state_filter(TASK_UNINTERRUPTIBLE) in
>> the error path of try_to_freeze_tasks(), where it prints the "refusing
>> to freeze" message?  It will print the stack trace of every thread
>> since they are all in the freezer, so the output will be very long.
>>
>
> If you provide a patch, I will give it a try.

Try the attached patch.

Download attachment "0001-HACK-print-stack-trace-for-all-tasks-when-freezing-f.patch" of type "application/octet-stream" (827 bytes)