diff options
| author | Vinod Polimera <quic_vpolimer@quicinc.com> | 2022-04-25 08:56:53 +0530 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-05-02 02:12:41 +0300 |
| commit | fa5186b279ecf44b14fb435540d2065be91cb1ed (patch) | |
| tree | 9d8ef240dc5d845140254d39b7fe7daecb290c46 /drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | |
| parent | 95093595914c17f32e1d6228b4db06fab8cebd35 (diff) | |
| download | linux-fa5186b279ecf44b14fb435540d2065be91cb1ed.tar.bz2 | |
drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm runtime resume
BUG: Unable to handle kernel paging request at virtual address 006b6b6b6b6b6be3
Call trace:
dpu_vbif_init_memtypes+0x40/0xb8
dpu_runtime_resume+0xcc/0x1c0
pm_generic_runtime_resume+0x30/0x44
__genpd_runtime_resume+0x68/0x7c
genpd_runtime_resume+0x134/0x258
__rpm_callback+0x98/0x138
rpm_callback+0x30/0x88
rpm_resume+0x36c/0x49c
__pm_runtime_resume+0x80/0xb0
dpu_core_irq_uninstall+0x30/0xb0
dpu_irq_uninstall+0x18/0x24
msm_drm_uninit+0xd8/0x16c
Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483255/
Link: https://lore.kernel.org/r/1650857213-30075-1-git-send-email-quic_vpolimer@quicinc.com
[DB: fixed Fixes tag]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 3316b964d4f3..9e93d40d36bd 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -774,8 +774,10 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms) for (i = 0; i < dpu_kms->catalog->vbif_count; i++) { u32 vbif_idx = dpu_kms->catalog->vbif[i].id; - if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx]) + if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx]) { dpu_hw_vbif_destroy(dpu_kms->hw_vbif[vbif_idx]); + dpu_kms->hw_vbif[vbif_idx] = NULL; + } } } |