| Message ID | tencent_136075DD89054EA06550D318084073EB3305@qq.com |
|---|---|
| State | New |
| Headers | show |
| Series | [FFmpeg-devel,v3,1/3] fftools/ffmpeg_filter: fix NULL pointer dereference | expand |
| Context | Check | Description |
|---|---|---|
| yinshiyou/make_loongarch64 | success | Make finished |
| yinshiyou/make_fate_loongarch64 | success | Make fate finished |
| andriy/make_x86 | success | Make finished |
| andriy/make_fate_x86 | success | Make fate finished |
Quoting Zhao Zhili (2023-12-20 11:26:22) > From: Zhao Zhili <zhilizhao@tencent.com> > > In close_output(), a dummy frame is created with format NONE passed > to enc_open(), which isn't prepared for it. The NULL pointer > dereference happened at > av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth. > > When fgt.graph is NULL, skip fg_output_frame() since there is > nothing to output. > > frame #0: 0x0000005555bc34a4 ffmpeg_g`enc_open(opaque=0xb400007efe2db690, frame=0xb400007efe2d9f70) at ffmpeg_enc.c:235:44 > frame #1: 0x0000005555bef250 ffmpeg_g`enc_open(sch=0xb400007dde2d4090, enc=0xb400007e4e2daad0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:1462:11 > frame #2: 0x0000005555bee094 ffmpeg_g`send_to_enc(sch=0xb400007dde2d4090, enc=0xb400007e4e2daad0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:1571:19 > frame #3: 0x0000005555bee01c ffmpeg_g`sch_filter_send(sch=0xb400007dde2d4090, fg_idx=0, out_idx=0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:2154:12 > frame #4: 0x0000005555bcf124 ffmpeg_g`close_output(ofp=0xb400007e4e2d85b0, fgt=0x0000007d1790eb08) at ffmpeg_filter.c:2225:15 > frame #5: 0x0000005555bcb000 ffmpeg_g`fg_output_frame(ofp=0xb400007e4e2d85b0, fgt=0x0000007d1790eb08, frame=0x0000000000000000) at ffmpeg_filter.c:2317:16 > frame #6: 0x0000005555bc7e48 ffmpeg_g`filter_thread(arg=0xb400007eae2ce7a0) at ffmpeg_filter.c:2836:15 > frame #7: 0x0000005555bee568 ffmpeg_g`task_wrapper(arg=0xb400007d8e2db478) at ffmpeg_sched.c:2200:21 > --- > fftools/ffmpeg_filter.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c > index 9fc877b437..f175ca7918 100644 > --- a/fftools/ffmpeg_filter.c > +++ b/fftools/ffmpeg_filter.c > @@ -2835,7 +2835,7 @@ read_frames: > for (unsigned i = 0; i < fg->nb_outputs; i++) { > OutputFilterPriv *ofp = ofp_from_ofilter(fg->outputs[i]); > > - if (fgt.eof_out[i]) > + if (fgt.eof_out[i] || !fgt.graph) Ok Thanks for fixing this,
diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c index 9fc877b437..f175ca7918 100644 --- a/fftools/ffmpeg_filter.c +++ b/fftools/ffmpeg_filter.c @@ -2835,7 +2835,7 @@ read_frames: for (unsigned i = 0; i < fg->nb_outputs; i++) { OutputFilterPriv *ofp = ofp_from_ofilter(fg->outputs[i]); - if (fgt.eof_out[i]) + if (fgt.eof_out[i] || !fgt.graph) continue; ret = fg_output_frame(ofp, &fgt, NULL);
From: Zhao Zhili <zhilizhao@tencent.com> In close_output(), a dummy frame is created with format NONE passed to enc_open(), which isn't prepared for it. The NULL pointer dereference happened at av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth. When fgt.graph is NULL, skip fg_output_frame() since there is nothing to output. frame #0: 0x0000005555bc34a4 ffmpeg_g`enc_open(opaque=0xb400007efe2db690, frame=0xb400007efe2d9f70) at ffmpeg_enc.c:235:44 frame #1: 0x0000005555bef250 ffmpeg_g`enc_open(sch=0xb400007dde2d4090, enc=0xb400007e4e2daad0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:1462:11 frame #2: 0x0000005555bee094 ffmpeg_g`send_to_enc(sch=0xb400007dde2d4090, enc=0xb400007e4e2daad0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:1571:19 frame #3: 0x0000005555bee01c ffmpeg_g`sch_filter_send(sch=0xb400007dde2d4090, fg_idx=0, out_idx=0, frame=0xb400007efe2d9f70) at ffmpeg_sched.c:2154:12 frame #4: 0x0000005555bcf124 ffmpeg_g`close_output(ofp=0xb400007e4e2d85b0, fgt=0x0000007d1790eb08) at ffmpeg_filter.c:2225:15 frame #5: 0x0000005555bcb000 ffmpeg_g`fg_output_frame(ofp=0xb400007e4e2d85b0, fgt=0x0000007d1790eb08, frame=0x0000000000000000) at ffmpeg_filter.c:2317:16 frame #6: 0x0000005555bc7e48 ffmpeg_g`filter_thread(arg=0xb400007eae2ce7a0) at ffmpeg_filter.c:2836:15 frame #7: 0x0000005555bee568 ffmpeg_g`task_wrapper(arg=0xb400007d8e2db478) at ffmpeg_sched.c:2200:21 --- fftools/ffmpeg_filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)