From 7f05c5cea04112471d8147487aa3b44141922d09 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Thu, 6 Apr 2017 11:47:03 -0400 Subject: [PATCH] h264: don't re-call ff_h264_direct_ref_list_init() w/ frame-mt. I'm hoping that this will address the remaining tsan fate-h264 issues: WARNING: ThreadSanitizer: data race (pid=24478) Read of size 8 at 0x7dbc0001c828 by main thread (mutexes: write M3243): #0 ff_h264_ref_picture src/libavcodec/h264_picture.c:107 (ffmpeg+0x0000013b78d8) [..] Previous write of size 1 at 0x7dbc0001c82e by thread T2 (mutexes: write M3245): #0 ff_h264_direct_ref_list_init src/libavcodec/h264_direct.c:137 (ffmpeg+0x000001382c93) But I'm not sure because I haven't been able to reproduce locally. --- libavcodec/h264_slice.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index 34bd6cf206..acf6a73f60 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -1891,7 +1891,8 @@ static int h264_slice_init(H264Context *h, H264SliceContext *sl, if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred) ff_h264_direct_dist_scale_factor(h, sl); - ff_h264_direct_ref_list_init(h, sl); + if (!h->setup_finished) + ff_h264_direct_ref_list_init(h, sl); if (h->avctx->skip_loop_filter >= AVDISCARD_ALL || (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&