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Wait for all threads to be done in DecodeRemaining.

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This could lead to a race condition.

BUG=oss-fuzz:9417

Change-Id: Ifef4001115888541cb76095e1c0226487d497b78
This commit is contained in:
Vincent Rabaud 2018-07-20 16:27:30 -07:00 committed by James Zern
parent 4649b3c422
commit 907208f97e
1 changed files with 6 additions and 0 deletions
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6
src/dec/idec_dec.c
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@ -473,6 +473,12 @@ static VP8StatusCode DecodeRemaining(WebPIDecoder* const idec) {
MemDataSize(&idec->mem_) > MAX_MB_SIZE) {
return IDecError(idec, VP8_STATUS_BITSTREAM_ERROR);
}
// Synchronize the threads.
if (dec->mt_method_ > 0) {
if (!WebPGetWorkerInterface()->Sync(&dec->worker_)) {
return IDecError(idec, VP8_STATUS_BITSTREAM_ERROR);
}
}
RestoreContext(&context, dec, token_br);
return VP8_STATUS_SUSPENDED;
}