Re: [alsa-devel] [PATCH] ALSA: firewire: fix a memory leak bug

[Takashi Iwai <tiwai@suse.de>]

On Thu, 08 Aug 2019 11:04:03 +0200,
 Takashi Sakamoto  wrote:
> 
> Hi,
> 
> On Thu, Aug 8, 2019, at 14:53, Wenwen Wang wrote:
> > In iso_packets_buffer_init(), 'b->packets' is allocated through
> > kmalloc_array(). Then, the aligned packet size is checked. If it is
> > larger than PAGE_SIZE, -EINVAL will be returned to indicate the error.
> > However, the allocated 'b->packets' is not deallocated on this path,
> > leading to a memory leak.
> > 
> > To fix the above issue, free 'b->packets' before returning the error code.
> > 
> > Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
> > ---
> >  sound/firewire/packets-buffer.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
> 
> And this bug exists till its first commit for v2.6.39.
> 
> Fixes: 31ef9134eb52 ("ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver")
> Cc: <stable@vger.kernel.org> # v2.6.39+

Applied, thanks.


Takashi