Find it did not provide any possible suspects, assigning to the concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/2e790171a1806ea15a81ef9bc2ab87ec93aabb92..c1cab294711bca021f9e21a06e9183ca88b8c62a?pretty=fuller

Suspecting, https://chromium.googlesource.com/chromium/src/+/a7da0714bb1e387b30298047a9fa81c0ed2a2d13

@mmenke -- Could you please look into the issue, kindly re-assign if this is not related to your change.
Thank You.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d94cd17eb70ca6099f9eeeaf307962624534884b

commit d94cd17eb70ca6099f9eeeaf307962624534884b
Author: mmenke <mmenke@chromium.org>
Date: Mon Nov 28 21:50:32 2016

Fix hitting a DCHECK in FtpNetworkTransaction on extra responses.

The DCHECK was mostly benign, though Chrome would close the socket
without waiting for a response to its QUIT messages, which has unclear
consequences.

BUG= 668759 

Review-Url: https://codereview.chromium.org/2532873003
Cr-Commit-Position: refs/heads/master@{#434727}

[modify] https://crrev.com/d94cd17eb70ca6099f9eeeaf307962624534884b/net/ftp/ftp_network_transaction.cc
[modify] https://crrev.com/d94cd17eb70ca6099f9eeeaf307962624534884b/net/ftp/ftp_network_transaction_unittest.cc

ClusterFuzz has detected this issue as fixed in range 434721:434825.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4748640473317376

Fuzzer: libfuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: UNKNOWN
Crash Address: 0x03e9000058d8
Crash State:
  base::debug::DebugBreak
  net::FtpNetworkTransaction::SendFtpCommand
  net::FtpNetworkTransaction::DoCtrlWriteQUIT
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=433648:433747
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=434721:434825

Minimized Testcase (1.23 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94siZ2A1hFuZyiIEEmaRVZIZPXBofP_eVJXPIn8lcJD6u7ey_jsXK3-bzfNyKH32uF0UTM1Wf0GZuKkh5xXpE-a88aobaI1Txo31EqUk5vvrulaK50YykD0M-NHKT1rM8Y1gl2EP6zcUFC13lAhuoAqWU284Q?testcase_id=4748640473317376

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.