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Re: [Xen-devel] [PATCH] xen/blkback: fix memory leaks


  • To: Wenwen Wang <wenwen@xxxxxxxxxx>
  • From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
  • Date: Mon, 12 Aug 2019 08:41:17 -0400
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  • Cc: Jens Axboe <axboe@xxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, "open list:BLOCK LAYER" <linux-block@xxxxxxxxxxxxxxx>, "moderated list:XEN BLOCK SUBSYSTEM" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Tue, 13 Aug 2019 06:53:51 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

On 8/11/19 1:23 PM, Wenwen Wang wrote:
> In read_per_ring_refs(), after 'req' and related memory regions are
> allocated, xen_blkif_map() is invoked to map the shared frame, irq, and
> etc. However, if this mapping process fails, no cleanup is performed,
> leading to memory leaks. To fix this issue, invoke the cleanup before
> returning the error.


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>


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