From patchwork Sat Aug 24 23:00:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 14699 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 234234489D8 for ; Sun, 25 Aug 2019 02:02:40 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id DF52C68ABB4; Sun, 25 Aug 2019 02:02:39 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe06-1.mx.upcmail.net (vie01a-dmta-pe06-1.mx.upcmail.net [84.116.36.14]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id EE3A768AB76 for ; Sun, 25 Aug 2019 02:02:32 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe06.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1i1f3I-000AIn-2M for ffmpeg-devel@ffmpeg.org; Sun, 25 Aug 2019 01:02:32 +0200 Received: from localhost ([213.47.41.20]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id 1f2Jiw1i6wlys1f2Jiuk4t; Sun, 25 Aug 2019 01:01:31 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.41.20 X-CNFS-Analysis: v=2.3 cv=E5OzWpVl c=1 sm=1 tr=0 a=I1eytVlZLDX1BM2VTtTtSw==:117 a=I1eytVlZLDX1BM2VTtTtSw==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=nZOtpAppAAAA:20 a=pqT0qMRlD-oopRUjKuIA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=jd6J4Gguk5HxikPWLKER:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 25 Aug 2019 01:00:30 +0200 Message-Id: <20190824230030.17444-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-CMAE-Envelope: MS4wfJr1h1kI59FBpKdEAoh4YuByG15RY2aQPTG5D1ZHYR2nk8lmo+MEIISfjr6qkUnvSPIvHEyBOP1c/yRgV3ot1PbNwswIvxYU1kBkWDvYZS+tNpD5aJrq 6dJAYUmU+TrwXwf9BOSnYqxO2XBfgKgAOSF56oOj/YhVxKq2+ScMoJVU Subject: [FFmpeg-devel] [PATCH] tools/target_dec_fuzzer: Increase maxpixels threshold for dirac X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" wavelets allow significant size expansion and they are also not very fast. Fixes: Timeout Fixes: 16480/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5659892689403904 (108sec -> 17ms) Fixes: 16480/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5749422717140992 (big ->15sec) Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- tools/target_dec_fuzzer.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c index 7bf25608ba..dd204eb5a6 100644 --- a/tools/target_dec_fuzzer.c +++ b/tools/target_dec_fuzzer.c @@ -128,6 +128,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { maxpixels = maxpixels_per_frame * maxiteration; switch (c->id) { // Allows a small input to generate gigantic output + case AV_CODEC_ID_DIRAC: maxpixels /= 8192; break; case AV_CODEC_ID_MSRLE: maxpixels /= 16; break; case AV_CODEC_ID_QTRLE: maxpixels /= 16; break; case AV_CODEC_ID_GIF: maxpixels /= 16; break;