From: Mukul Joshi Date: Mon, 12 Feb 2024 15:40:55 +0000 (-0500) Subject: drm/amdkfd: Check cgroup when returning DMABuf info X-Git-Tag: v6.8.10~225 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77c76b8c1261739526392a666bb358454ab1b831;p=thirdparty%2Fkernel%2Fstable.git drm/amdkfd: Check cgroup when returning DMABuf info [ Upstream commit 9d7993a7ab9651afd5fb295a4992e511b2b727aa ] Check cgroup permissions when returning DMA-buf info and based on cgroup info return the GPU id of the GPU that have access to the BO. Signed-off-by: Mukul Joshi Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 08da993df1480..7d5ffc2bad793 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1522,7 +1522,7 @@ static int kfd_ioctl_get_dmabuf_info(struct file *filep, /* Find a KFD GPU device that supports the get_dmabuf_info query */ for (i = 0; kfd_topology_enum_kfd_devices(i, &dev) == 0; i++) - if (dev) + if (dev && !kfd_devcgroup_check_permission(dev)) break; if (!dev) return -EINVAL; @@ -1544,7 +1544,7 @@ static int kfd_ioctl_get_dmabuf_info(struct file *filep, if (xcp_id >= 0) args->gpu_id = dmabuf_adev->kfd.dev->nodes[xcp_id]->id; else - args->gpu_id = dmabuf_adev->kfd.dev->nodes[0]->id; + args->gpu_id = dev->id; args->flags = flags; /* Copy metadata buffer to user mode */