Bugs-- folks: halp! this and  issue 734014  are missing stack traces

This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Looks like we're hitting this a lot in CF (250k+ crashes/day). I haven't looked closely, but given the frequency I would expect this to be a tool issue.

sebmarchand: Any idea what's going on here? Looks like this started up on the 16th.

Ha, it's probably because of an issue that we're having right now with SyzyAsan, I'm working on fixing it.

 Issue 734014  has been merged into this issue.

Any updates on this ? 

The problem has been fixed on the Syzygy side, I'm rolling Syzygy deps in https://codereview.chromium.org/2947213002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/38734eca6b4e3d9cd60606e7150723402494b710

commit 38734eca6b4e3d9cd60606e7150723402494b710
Author: sebmarchand <sebmarchand@chromium.org>
Date: Wed Jun 21 21:43:41 2017

Roll Syzygy deps to v0.8.31.0

Changelog:
[e2fe0d0e41] Fail if we can't intercept a CRT function and add support for
             Win10 SDK versions 10.0.10586.0 and 10.0.15063.0.

BUG= 734109 

Review-Url: https://codereview.chromium.org/2947213002
Cr-Commit-Position: refs/heads/master@{#481314}

[modify] https://crrev.com/38734eca6b4e3d9cd60606e7150723402494b710/DEPS

ClusterFuzz has detected this issue as fixed in range 481254:481399.

Detailed report: https://clusterfuzz.com/testcase?key=5826328342560768

Fuzzer: inferno_twister
Job Type: windows_syzyasan_content_shell
Platform Id: windows

Crash Type: Heap-buffer-overflow READ 16
Crash Address: 0x2F3D1C4F
Crash State:
  (unknown)
  (unknown)
  SHStrDupA+256
  
Memory Tool: SYZYASAN

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=479947:479966
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=481254:481399

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5826328342560768


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 5566189958070272 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot