Gautam Dawar 5ad8d44873 vhost-vdpa: free iommu domain after last use during cleanup ... [ Upstream commit 5a52215009 ] Currently vhost_vdpa_cleanup() unmaps the DMA mappings by calling `iommu_unmap(v->domain, map->start, map->size);` from vhost_vdpa_general_unmap() when the parent vDPA driver doesn't provide DMA config operations. However, the IOMMU domain referred to by `v->domain` is freed in vhost_vdpa_free_domain() before vhost_vdpa_cleanup() in vhost_vdpa_release() which results in NULL pointer de-reference. Accordingly, moving the call to vhost_vdpa_free_domain() in vhost_vdpa_cleanup() would makes sense. This will also help detaching the dma device in error handling of vhost_vdpa_alloc_domain(). This issue was observed on terminating QEMU with SIGQUIT. Fixes: 037d430556 ("vhost-vdpa: call vhost_vdpa_cleanup during the release") Signed-off-by: Gautam Dawar <gautam.dawar@amd.com> Message-Id: <20230301163203.29883-1-gautam.dawar@amd.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-22 13:37:46 +01:00
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Kconfig	vhost_vdpa: implement IRQ offloading in vhost_vdpa	2020-08-05 11:08:42 -04:00
Makefile	vhost: introduce vDPA-based backend	2020-04-02 10:41:40 -04:00
iotlb.c	vhost_iotlb: split out IOTLB initialization	2022-05-31 12:44:28 -04:00
net.c	vhost/net: Clear the pending messages when the backend is removed	2023-01-27 06:18:41 -05:00
scsi.c	vhost-scsi: unbreak any layout for response	2023-01-27 06:18:41 -05:00
test.c	vhost: rename vhost_work_dev_flush	2022-05-31 12:45:10 -04:00
test.h	tools/virtio: Add --reset	2020-06-22 12:34:21 -04:00
vdpa.c	vhost-vdpa: free iommu domain after last use during cleanup	2023-03-22 13:37:46 +01:00
vhost.c	vhost/net: Clear the pending messages when the backend is removed	2023-01-27 06:18:41 -05:00
vhost.h	vhost/net: Clear the pending messages when the backend is removed	2023-01-27 06:18:41 -05:00
vringh.c	vringh: fix range used in iotlb_translate()	2022-12-28 05:28:10 -05:00
vsock.c	vhost/vsock: Fix error handling in vhost_vsock_init()	2022-12-28 05:28:10 -05:00