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Sat, 3 Mar 2018 17:26:57 -0500 Received: from mail-bl2nam02on0095.outbound.protection.outlook.com ([104.47.38.95]:17369 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932667AbeCCW0z (ORCPT ); Sat, 3 Mar 2018 17:26:55 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Monk Liu , Alex Deucher , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 065/102] drm/amdgpu:fix virtual dce bug Thread-Topic: [PATCH AUTOSEL for 4.15 065/102] drm/amdgpu:fix virtual dce bug Thread-Index: AQHTsz5vtWvCAR03rkG6UKLIqWqAGw== Date: Sat, 3 Mar 2018 22:24:47 +0000 Message-ID: <20180303222318.26006-65-alexander.levin@microsoft.com> References: <20180303222318.26006-1-alexander.levin@microsoft.com> In-Reply-To: <20180303222318.26006-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2SPR01MB06;7:Ia+9npcla3jzvGY//f6IPMYC1m853p0A1NjVBD8CWPr+7MiGeCrxlRZ2OmSYkoBHnIayhK0eMtL+WiUT8CTLboA3FIKxB1Hed5F9dD8E2k1PVlqfhRGPPzjR/qsPMxARhgTHnIgeQd4/mMH8yamGtD/IxwG/5hpCmDZOow+PmO+EdmB7fKpOq0p6loKzZwxF5GNj83hrMDH3fep3jrznALhpgWpJrgkvHPVxoyHxL3hjaqc4v+PCSJQ/stC1RuNs x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: fc7ec855-ebc8-41b5-b913-08d58155dc2b x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2SPR01MB06; 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Signed-off-by: Monk Liu Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd= /amdgpu/dce_virtual.c index a8829af120c1..39460eb1e71a 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c @@ -437,6 +437,8 @@ static int dce_virtual_sw_fini(void *handle) drm_kms_helper_poll_fini(adev->ddev); =20 drm_mode_config_cleanup(adev->ddev); + /* clear crtcs pointer to avoid dce irq finish routine access freed data = */ + memset(adev->mode_info.crtcs, 0, sizeof(adev->mode_info.crtcs[0]) * AMDGP= U_MAX_CRTCS); adev->mode_info.mode_config_initialized =3D false; return 0; } @@ -723,7 +725,7 @@ static void dce_virtual_set_crtc_vblank_interrupt_state= (struct amdgpu_device *ad int crtc, enum amdgpu_interrupt_state state) { - if (crtc >=3D adev->mode_info.num_crtc) { + if (crtc >=3D adev->mode_info.num_crtc || !adev->mode_info.crtcs[crtc]) { DRM_DEBUG("invalid crtc %d\n", crtc); return; } --=20 2.14.1