From 67bef0f7908a3a6b10e5a29d8e8c09e27f90c9f8 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Thu, 29 Jun 2017 14:21:49 +0800 Subject: [PATCH] drm/amdgpu: fix the memory corruption on S3 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit psp->cmd will be used on resume phase, so we can not free it on hw_init. Otherwise, a memory corruption will be triggered. Signed-off-by: Huang Rui Reviewed-by: Christian König Tested-by: Xiaojie Yuan Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index c224c5caba5b..e19369efb840 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -333,14 +333,11 @@ static int psp_load_fw(struct amdgpu_device *adev) { int ret; struct psp_context *psp = &adev->psp; - struct psp_gfx_cmd_resp *cmd; - cmd = kzalloc(sizeof(struct psp_gfx_cmd_resp), GFP_KERNEL); - if (!cmd) + psp->cmd = kzalloc(sizeof(struct psp_gfx_cmd_resp), GFP_KERNEL); + if (!psp->cmd) return -ENOMEM; - psp->cmd = cmd; - ret = amdgpu_bo_create_kernel(adev, PSP_1_MEG, PSP_1_MEG, AMDGPU_GEM_DOMAIN_GTT, &psp->fw_pri_bo, @@ -379,8 +376,6 @@ static int psp_load_fw(struct amdgpu_device *adev) if (ret) goto failed_mem; - kfree(cmd); - return 0; failed_mem: @@ -390,7 +385,8 @@ failed_mem1: amdgpu_bo_free_kernel(&psp->fw_pri_bo, &psp->fw_pri_mc_addr, &psp->fw_pri_buf); failed: - kfree(cmd); + kfree(psp->cmd); + psp->cmd = NULL; return ret; } @@ -450,6 +446,9 @@ static int psp_hw_fini(void *handle) amdgpu_bo_free_kernel(&psp->fence_buf_bo, &psp->fence_buf_mc_addr, &psp->fence_buf); + kfree(psp->cmd); + psp->cmd = NULL; + return 0; } -- 2.20.1