From: Philip Yang <Philip.Yang@amd.com> stable inclusion from stable-v6.6.88 commit a36f8d544522a19ef06ed9e84667d154dcb6be52 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC6M30 CVE: CVE-2025-37853 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ 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> Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Guo Mengqi <guomengqi3@huawei.com> --- 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 2786d47961e0..20b6e21540a1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -1393,6 +1393,11 @@ 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); } -- 2.22.0