> -----Original Message----- > From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf > Of Monk Liu > Sent: Wednesday, November 15, 2017 4:11 AM > To: amd-gfx at lists.freedesktop.org > Cc: Liu, Monk > Subject: [PATCH] drm/amdgpu:fix virtual dce bug > > this fix the issue that access memory after freed > after driver unloaded. > > Change-Id: I64e2488c18f5dc044b57c74567785da21fc028da > Signed-off-by: Monk Liu <Monk.Liu at amd.com> Acked-by: Alex Deucher <alexander.deucher at amd.com> > --- > 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 a8829af..39460eb 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); > > 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]) * AMDGPU_MAX_CRTCS); > adev->mode_info.mode_config_initialized = 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 >= adev->mode_info.num_crtc) { > + if (crtc >= adev->mode_info.num_crtc || !adev- > >mode_info.crtcs[crtc]) { > DRM_DEBUG("invalid crtc %d\n", crtc); > return; > } > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
