linux-kernel - Re: [PATCH] ACPICA: Don't leak next_walk_state in acpi_ds_call_control

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Message-ID: <1616366.ueb6908Eo9@vostro.rjw.lan>
Date:	Sun, 28 Oct 2012 22:08:20 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>, Lin Ming <ming.m.lin@...el.com>,
	Bob Moore <robert.moore@...el.com>
Subject: Re: [PATCH] ACPICA: Don't leak next_walk_state in acpi_ds_call_control_method()

On Tuesday, November 25, 2008 02:42:09 PM Jesper Juhl wrote:
> On Thu, 25 Oct 2012, Rafael J. Wysocki wrote:
> 
> > On Sunday 21 of October 2012 22:35:46 Jesper Juhl wrote:
> > > If acpi_ds_create_walk_state() succeeds, but the call to
> > > ACPI_ALLOCATE_ZEROED() fails, then we'll return from the function
> > > without properly freeing 'next_walk_state'.
> > > 
> > > Signed-off-by: Jesper Juhl <jj@...osbits.net>
> > 
> > This has to go through ACPICA upstream, but we'll get it from there eventually.
> > 
> 
> Ok. I haven't heard any response to this other than yours, so I guess I'll 
> just re-send it in a few days if I still hear nothing.
> 
> Can I add your ACK when I re-send?

You don't need to resend, it's been taken.

Thanks,
Rafael


> > > ---
> > >  drivers/acpi/acpica/dsmethod.c |    3 ++-
> > >  1 files changed, 2 insertions(+), 1 deletions(-)
> > > 
> > > diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
> > > index aa9a5d4..ade59a3 100644
> > > --- a/drivers/acpi/acpica/dsmethod.c
> > > +++ b/drivers/acpi/acpica/dsmethod.c
> > > @@ -378,7 +378,8 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
> > >  	 */
> > >  	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
> > >  	if (!info) {
> > > -		return_ACPI_STATUS(AE_NO_MEMORY);
> > > +		status = AE_NO_MEMORY;
> > > +		goto cleanup;
> > >  	}
> > >  
> > >  	info->parameters = &this_walk_state->operands[0];
> > > 
> > 
> 
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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