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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 <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mukul Joshi 2024-02-12 10:40:55 -05:00 committed by Greg Kroah-Hartman
parent 1ea068f5b6
commit d644962423
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
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@ -1516,7 +1516,7 @@ 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;
@ -1538,7 +1538,7 @@ 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 */