Hello,
This v2 series fixes the use-after-free bug in mtk_jpeg_dec_device_run. This patch fixes the security bug in chrome-os. It inclues reverting the incomplete fix before and make the right fix. Also,it fixes the error of timeout-worker-schedule in multiple-core devices.
1. Remove cancel worker in mtk_jpeg_remove for the worker is only registered in single-core device but we try to cacnel it in both single-core and multiple-core devices.
2. Fix use-after-free bug by delay the schedule_delayed_work only if mtk_jpeg_set_dec_dst runs successfully.
3. Delay the schedule_delayed_work in mtk_jpegdec_worker as it has same code logic in mtk_jpeg_dec_device_run.
version 2 changes
-put the patches into on series suggested by Dmitry
Zheng Wang (3): media: mtk-jpeg: Remove cancel worker in mtk_jpeg_remove to avoid the crash of multi-core JPEG devices media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run media: mtk-jpeg: Fix timeout schedule error in mtk_jpegdec_worker.
.../media/platform/mediatek/jpeg/mtk_jpeg_core.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-)