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[FFmpeg-devel,3/7] tools/target_dem_fuzzer: Force interrupt for HLS

Message ID 20211205211907.30010-3-michael@niedermayer.cc
State Accepted
Commit 1372b30db2d5b4565376a168d7d806c56f3d96f1
Headers show
Series [FFmpeg-devel,1/7] avformat/vivo: Do not use the general expression evaluator for parsing a floating point value | expand

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Commit Message

Michael Niedermayer Dec. 5, 2021, 9:19 p.m. UTC
Fixes: Timeout
Fixes: 41580/clusterfuzz-testcase-minimized-ffmpeg_dem_HLS_fuzzer-5059099224571904

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 tools/target_dem_fuzzer.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Michael Niedermayer Feb. 19, 2022, 12:28 p.m. UTC | #1
On Sun, Dec 05, 2021 at 10:19:03PM +0100, Michael Niedermayer wrote:
> Fixes: Timeout
> Fixes: 41580/clusterfuzz-testcase-minimized-ffmpeg_dem_HLS_fuzzer-5059099224571904
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  tools/target_dem_fuzzer.c | 4 ++++
>  1 file changed, 4 insertions(+)

will apply

[...]
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Patch

diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c
index 6ee793a28ba..687989ccc89 100644
--- a/tools/target_dem_fuzzer.c
+++ b/tools/target_dem_fuzzer.c
@@ -172,6 +172,10 @@  int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         avfmt->interrupt_callback.callback = interrupt_cb;
     }
 
+    // HLS uses a loop with sleep, we thus must breakout or we timeout
+    if (!strcmp(fmt->name, "hls"))
+        interrupt_counter &= 31;
+
     if (!io_buffer_size || size / io_buffer_size > maxblocks)
         io_buffer_size = size;