From: Amit Sahrawat <amit.sahrawat83@gmail.com>
To: Kyungmin Park <kmpark@infradead.org>
Cc: Pavel Machek <pavel@ucw.cz>, "Rafael J. Wysocki" <rjw@sisk.pl>,
Len Brown <len.brown@intel.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
Tejun Heo <tj@kernel.org>
Subject: Re: BUG: sleeping function called from invalid context at include/linux/freezer.h:45
Date: Tue, 10 Jan 2012 11:22:29 +0530 [thread overview]
Message-ID: <CADDb1s2-Tsnns8qndpbS79cPAw2X_ORXqMsqWR=AuBoLCDneMg@mail.gmail.com> (raw)
In-Reply-To: <CAH9JG2XniMv5dVf1DixGNaQAJk-sZjnV9HfYeihEJP3JDyC4+Q@mail.gmail.com>
On Tue, Jan 10, 2012 at 9:57 AM, Kyungmin Park <kmpark@infradead.org> wrote:
> Dear all
>
> with the latest kernel. I got the below bug message.
> It calls the sleep function. Does it intended operation?
>
> static inline bool try_to_freeze(void)
> {
> might_sleep();
> if (likely(!freezing(current)))
> return false;
> return __refrigerator(false);
> }
this change is part of this GIT:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=a0acae0e886d44bd5ce6d2f173c1ace0fcf0d9f6
>
> # poweroff
> [ 6.852523] BUG: sleeping function called from invalid context at
> include/linux/freezer.h:45
> [ 6.859489] in_atomic(): 0, irqs_disabled(): 128, pid: 1, name: init
> [ 6.865846] [<c0013508>] (unwind_backtrace+0x0/0xec) from
> [<c0010124>] (do_signal+0x88/0x588)
> [ 6.874337] [<c0010124>] (do_signal+0x88/0x588) from [<c001063c>]
> (do_notify_resume+0x18/0x38)
> [ 6.882928] [<c001063c>] (do_notify_resume+0x18/0x38) from
> [<c000dc18>] (work_pending+0x24/0x28)
is this the complete backtrace...?
The above backtrace shows that freezing was called from a context
wherein - IRQs are disabled - which resulted in this error.
How about checking ...
BUG_ON(irqs_disabled()); in try_to_freeze()...
not sure though... please check and update me also...
>
> commit e4e11180dfa545233e5145919b75b7fac88638df
> Merge: 37cfc3f adc0e91
> Author: Linus Torvalds <torvalds@linux-foundation.org>
> Date: Mon Jan 9 17:37:37 2012 -0800
>
> Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vi
>
> Thank you,
> Kyungmin Park
> --
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next prev parent reply other threads:[~2012-01-10 5:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-10 4:27 BUG: sleeping function called from invalid context at include/linux/freezer.h:45 Kyungmin Park
2012-01-10 5:52 ` Amit Sahrawat [this message]
2012-01-10 5:59 ` Kyungmin Park
2012-01-10 13:04 ` Srivatsa S. Bhat
2012-01-11 0:57 ` Kyungmin Park
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