From 7764e9c727d58fcdcd2944da43d4cb300d112535 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Wed, 22 Jul 2026 12:07:30 -0400 Subject: [PATCH] vduse: take out allocations from vduse_dev_alloc_coherent MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 489d76520612abf9a4ede4344349105406c91a73 ] The function vduse_dev_alloc_coherent will be called under rwlock in next patches. Make it out of the lock to avoid increasing its fail rate. Acked-by: Jason Wang Signed-off-by: Eugenio Pérez Signed-off-by: Michael S. Tsirkin Message-Id: <20260119143306.1818855-10-eperezma@redhat.com> Stable-dep-of: 9c1523803445 ("VDUSE: avoid leaking information to userspace") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/vdpa/vdpa_user/iova_domain.c | 3 --- drivers/vdpa/vdpa_user/vduse_dev.c | 1 + 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/vdpa/vdpa_user/iova_domain.c b/drivers/vdpa/vdpa_user/iova_domain.c index aab730e8a316..0a9f668467a8 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.c +++ b/drivers/vdpa/vdpa_user/iova_domain.c @@ -526,7 +526,6 @@ void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size, struct iova_domain *iovad = &domain->consistent_iovad; struct vhost_iotlb_map *map; struct vdpa_map_file *map_file; - phys_addr_t pa; spin_lock(&domain->iotlb_lock); map = vhost_iotlb_itree_first(domain->iotlb, (u64)dma_addr, @@ -538,12 +537,10 @@ void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size, map_file = (struct vdpa_map_file *)map->opaque; fput(map_file->file); kfree(map_file); - pa = map->addr; vhost_iotlb_map_free(domain->iotlb, map); spin_unlock(&domain->iotlb_lock); vduse_domain_free_iova(iovad, dma_addr, size); - free_pages_exact(phys_to_virt(pa), size); } static vm_fault_t vduse_domain_mmap_fault(struct vm_fault *vmf) diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c index 647158bb6ccf..18c67b3db1f3 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -961,6 +961,7 @@ static void vduse_dev_free_coherent(union virtio_map token, size_t size, domain = vdev->domain; vduse_domain_free_coherent(domain, size, dma_addr, attrs); + free_pages_exact(vaddr, size); } static bool vduse_dev_need_sync(union virtio_map token, dma_addr_t dma_addr)