From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com
Cc: gautam.dawar@xilinx.com,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] vdpasim: fix memory leak when freeing IOTLBs
Date: Tue, 13 Dec 2022 17:07:17 +0800 [thread overview]
Message-ID: <20221213090717.61529-1-jasowang@redhat.com> (raw)
After commit bda324fd037a ("vdpasim: control virtqueue support"),
vdpasim->iommu became an array of IOTLB, so we should clean the
mappings of each free one by one instead of just deleting the ranges
in the first IOTLB which may leak maps.
Fixes: bda324fd037a ("vdpasim: control virtqueue support")
Cc: Gautam Dawar <gautam.dawar@xilinx.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index b071f0d842fb..9668dc477843 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -690,7 +690,9 @@ static void vdpasim_free(struct vdpa_device *vdpa)
}
kvfree(vdpasim->buffer);
- vhost_iotlb_free(vdpasim->iommu);
+ for (i = 0; i < vdpasim->dev_attr.nas; i++)
+ vhost_iotlb_reset(&vdpasim->iommu[i]);
+ kfree(vdpasim->iommu);
kfree(vdpasim->vqs);
kfree(vdpasim->config);
}
--
2.25.1
next reply other threads:[~2022-12-13 9:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-13 9:07 Jason Wang [this message]
2022-12-13 11:08 ` Gautam Dawar
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