linux-kernel - Re: [PATCH] thermal: power_allocator: allocate with kcalloc what you free with kfree

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Date:	Sat, 29 Aug 2015 13:27:46 +0100
From:	Javi Merino <javi.merino@....com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"edubezval@...il.com" <edubezval@...il.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH] thermal: power_allocator: allocate with kcalloc what you
 free with kfree

Hi Linus,

On Thu, Aug 27, 2015 at 04:49:37PM +0100, Javi Merino wrote:
> On Tue, Aug 25, 2015 at 07:22:35PM +0100, Javi Merino wrote:
> > Commit cf736ea6f902 ("thermal: power_allocator: do not use devm*
> > interfaces") forgot to change a devm_kcalloc() to just kcalloc(), but
> > it's corresponding devm_kfree() was changed to kfree().  Allocate with
> > kcalloc() to match the kfree().
> > 
> > Fixes: cf736ea6f902 ("thermal: power_allocator: do not use devm* interfaces")
> > Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> > Cc: Eduardo Valentin <edubezval@...il.com>
> > Cc: Zhang Rui <rui.zhang@...el.com>
> > Signed-off-by: Javi Merino <javi.merino@....com>
> > ---
> > 
> > Can this be merged for 4.2, please?  I'm having memory problems with
> > 4.2-rc8 because of this.
> 
> Please merge this for 4.2 or revert cf736ea6f902 ("thermal:
> power_allocator: do not use devm* interfaces")

cf736ea6f902 ("thermal: power_allocator: do not use devm*
interfaces") was merged for 4.2-rc8.  It leaves an allocation of
memory with devm_kcalloc() that is then freed with kfree().  The
patch at the top of the thread[0][1] fixes this.  Can you either
merge this patch or revert cf736ea6f902 for 4.2?

[0] https://patchwork.kernel.org/patch/7072591/
[1] Message-ID: <1440526955-9860-1-git-send-email-javi.merino@....com>

Thanks,
Javi
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