The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0951256184bfbf3bb7c4b23ee01c24d84841abb7

commit 0951256184bfbf3bb7c4b23ee01c24d84841abb7
Author: Robert Sesek <rsesek@chromium.org>
Date: Tue Nov 14 19:26:59 2017

Fix null-deref under safe_browsing::dmg::HFSBTreeIterator::Next().

Bug:  780455 
Change-Id: Ia62983aa7be479e973ff0154ed4ebd276e634dd3
Reviewed-on: https://chromium-review.googlesource.com/769049
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516384}
[modify] https://crrev.com/0951256184bfbf3bb7c4b23ee01c24d84841abb7/chrome/utility/safe_browsing/mac/hfs.cc

ClusterFuzz has detected this issue as fixed in range 516325:516519.

Detailed report: https://clusterfuzz.com/testcase?key=6534852861231104

Fuzzer: libFuzzer_safe_browsing_hfs_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  safe_browsing::dmg::HFSBTreeIterator::Next
  safe_browsing::dmg::HFSIterator::Next
  start
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=509376:509426
Fixed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=516325:516519

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6534852861231104

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 6534852861231104 is verified as fixed, so closing issue as verified.

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