From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Northup Subject: [PATCH] virtio_scsi: fix memory leak on full queue condition. Date: Thu, 8 Nov 2012 01:55:50 -0800 Message-ID: <1352368550-6694-1-git-send-email-digitaleric@google.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Paolo Bonzini Cc: "James E.J. Bottomley" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Eric Northup List-Id: linux-scsi@vger.kernel.org virtscsi_queuecommand was leaking memory when the virtio queue was full. Tested: Guest operates correctly even with very small queue sizes, validated we're not leaking kmalloc-192 sized allocations anymore. Signed-off-by: Eric Northup --- drivers/scsi/virtio_scsi.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 595af1a..dd8dc27 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -469,6 +469,8 @@ static int virtscsi_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc) sizeof cmd->req.cmd, sizeof cmd->resp.cmd, GFP_ATOMIC) >= 0) ret = 0; + else + mempool_free(cmd, virtscsi_cmd_pool); out: return ret; -- 1.7.7.3