jiayl@ could you please look into this.please feel free to re-assigned back if needed. thanks in advance !

The following revision refers to this bug:
  https://chromium.googlesource.com/external/webrtc.git/+/79dfdadbc861a56596a42ba9f40c8bcbf30e4d75

commit 79dfdadbc861a56596a42ba9f40c8bcbf30e4d75
Author: henrik.lundin <henrik.lundin@webrtc.org>
Date: Tue Nov 15 09:45:53 2016

Avoid left-shifting negative values in a number of places

This is undefined behavior, according to specification.

BUG= chromium:661133 

Review-Url: https://codereview.webrtc.org/2500953003
Cr-Commit-Position: refs/heads/master@{#15078}

[modify] https://crrev.com/79dfdadbc861a56596a42ba9f40c8bcbf30e4d75/webrtc/common_audio/signal_processing/levinson_durbin.c
[modify] https://crrev.com/79dfdadbc861a56596a42ba9f40c8bcbf30e4d75/webrtc/common_audio/signal_processing/vector_scaling_operations.c
[modify] https://crrev.com/79dfdadbc861a56596a42ba9f40c8bcbf30e4d75/webrtc/modules/audio_coding/neteq/expand.cc

The fix was rolled into Chrome in https://crrev.com/361abd5fba1cc8e0e47f95e7f77aea8a325276d7. Waiting for fuzzer to find this and mark as fixed.

ClusterFuzz has detected this issue as fixed in range 432467:432520.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5589225526525952

Fuzzer: libfuzzer_neteq_rtp_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  WebRtcSpl_VectorBitShiftW16
  webrtc::Expand::Correlation
  webrtc::Expand::AnalyzeSignal
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=427295:427323
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=432467:432520

Minimized Testcase (0.02 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97kTL2HqqVyCROjigtjseJSm32M0-R0L6iuG-Or_uPRlaPHR0eNteBoW-nz_fNxoclA1C9Hb4i0XUpTBXBzvCXOd5__H4-PYoUrUpP3divdKs-jkOdR78Laj6AT1uv4u5GVt5Y-z438xydFF3Puh3IFVF96Sg?testcase_id=5589225526525952

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase is verified as fixed, closing issue.

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