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| author | Peng Hao <peng.hao2@zte.com.cn> | 2017-07-15 22:14:21 +0800 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2017-07-17 11:08:59 +0200 |
| commit | facd0e97737a41b0bed072a95dcc3eb863c7667f (patch) | |
| tree | 6fa4c8a6f0888395e1a7e58fb615e7dfc0b96d6c /audio/rate_template.h | |
| parent | 6e2c46334385c7e295ac883c801c81b4925fb54f (diff) | |
| download | qemu-facd0e97737a41b0bed072a95dcc3eb863c7667f.zip qemu-facd0e97737a41b0bed072a95dcc3eb863c7667f.tar.gz qemu-facd0e97737a41b0bed072a95dcc3eb863c7667f.tar.bz2 | |
audio: st_rate_flow exist a infinite loop
If a voice recording equipment is opened for a long time(several days)
in windows guest, rate->ipos will overflow and rate->opos will never
have a chance to change. It will result to a infinite loop.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Message-id: 1500128061-20849-1-git-send-email-peng.hao2@zte.com.cn
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'audio/rate_template.h')
| -rw-r--r-- | audio/rate_template.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/audio/rate_template.h b/audio/rate_template.h index bd4b1c7..6e93588 100644 --- a/audio/rate_template.h +++ b/audio/rate_template.h @@ -71,6 +71,12 @@ void NAME (void *opaque, struct st_sample *ibuf, struct st_sample *obuf, while (rate->ipos <= (rate->opos >> 32)) { ilast = *ibuf++; rate->ipos++; + + /* if ipos overflow, there is a infinite loop */ + if (rate->ipos == 0xffffffff) { + rate->ipos = 1; + rate->opos = rate->opos & 0xffffffff; + } /* See if we finished the input buffer yet */ if (ibuf >= iend) { goto the_end; |