#10694 closed defect (fixed)
hb_font_destroy exception on multi thread
| Reported by: | harf | Owned by: | |
|---|---|---|---|
| Priority: | minor | Component: | avfilter |
| Version: | 6.0 | Keywords: | harfbuzz |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
Summary of the bug:
How to reproduce:
using ffmpeg api in C
libavfilter/vf_drawtext.c
static void hb_destroy(HarfbuzzData *hb) {
line: 1661 hb_font_destroy(hb->font);
}
exception occurs when running more than one thread only
ffmpeg version 6.1
built on mac
Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.
Change History (3)
comment:1 by , 2 years ago
| Priority: | critical → minor |
|---|---|
| Resolution: | → invalid |
| Status: | new → closed |
comment:2 by , 2 years ago
To fix the issue you need:
pthread_mutex_lock(&lock);
av_buffersink_get_frame_flags(...);
pthread_mutex_unlock(&lock);
ffmpeg version 6.0 uses harfbuzz lib, which uses freetype lib which has an issue on multithead access.
comment:3 by , 2 years ago
| Resolution: | invalid → fixed |
|---|
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