From: Philip Yang Philip.Yang@amd.com
[ Upstream commit fe9d0061c413f8fb8c529b18b592b04170850ded ]
debugfs hang_hws is used by GPU reset test with HWS, for MES this crash the kernel with NULL pointer access because dqm->packet_mgr is not setup for MES path.
Skip GPU with MES for now, MES hang_hws debugfs interface will be supported later.
Signed-off-by: Philip Yang Philip.Yang@amd.com Reviewed-by: Kent Russell kent.russell@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 --- drivers/gpu/drm/amd/amdkfd/kfd_device.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index 35caa71f317dc..463771b7dd4a7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -1519,6 +1519,11 @@ int kfd_debugfs_hang_hws(struct kfd_node *dev) return -EINVAL; }
+ if (dev->kfd->shared_resources.enable_mes) { + dev_err(dev->adev->dev, "Inducing MES hang is not supported\n"); + return -EINVAL; + } + return dqm_debugfs_hang_hws(dev->dqm); }