shaktisahu: this might be caused by the same root issue as  https://crbug.com/709737 . Can you please urgently take a look?

Just for completeness, is there a CL or another bug which fixes this, or was it a bad report?

Fixed with CL : https://codereview.chromium.org/2806423002/

Great - in future, please tag the CL with ClusterFuzz bugs so that ClusterFuzz will automatically go and check whether it's fixed post-landing. Otherwise there may be nag emails. :)

ClusterFuzz has detected this issue as fixed in range 463355:463374.

Detailed report: https://clusterfuzz.com/testcase?key=6217627287683072

Fuzzer: ochang_search_index_mutator
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  DownloadHistory::OnDownloadUpdated
  content::DownloadItemImpl::UpdateObservers
  content::DownloadItemImpl::DestinationUpdate
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Fixed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=463355:463374

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv97mDR7XmwemKAy7dyWNzfBw0RtgE8PKAG_ktyqjBDd-75ZwLeg0-B6_FWeg2obExOn3Alv63OVUTcdTGjPpo_jlVIMDNKStmlfH_DA-r0HR9kKIMdvnW-h5leVYdyliVw1QgaRGrSCL-GsmEh6SObM_P2AYBv-fmw7mXUtQlIzsG9QOo02r5HqM_Qt_fLNRo6sfvUgRjhkSB_oIYZ3e8YOzfuEKGbps0EG1vcPT2Ccxvk57kXE6PsoaksEi4uljPPygP3gwXXTqWwduK99hNav-5XnNVeG70oXzj6lsI5s-Hq7jCe3ykkdsbJ86frYXSpYWIFgZst82HhR26YHgaXqKRss_NfUa-W-yyGpRLS0gFvuWsWU?testcase_id=6217627287683072


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.

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