Assigning to the concern owner from Find it results --
The result is a list of CLs that change the crashed files. 

Author: jinsukkim
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/79df88ae0437499f21dd82976ca24a0c6f2d11c7
Time: Wed Jan 04 06:26:15 2017
Lines 5160 of file web_contents_impl.cc which potentially caused crash are changed in this cl (frame #2, "content::WebContentsImpl::SetEncoding").
Minimum distance from crash line to modified line: 0. (file: web_contents_impl.cc, crashed on: 5160, modified: 5160).

@jinsukkim -- Could you please look into the isue, kindly re-assign if this is not related to your changes.
Thank You.

Looks like another dupe of  issue 678359 ?

Also, msrchandra@, these are not SiteIsolation bugs.  Is there a reason you're applying that label?

ClusterFuzz has detected this issue as fixed in range 441524:442831.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6354622894833664

Fuzzer: inferno_twister
Job Type: linux_asan_chrome_media
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  bool IPC::MessageT<FrameHostMsg_UpdateEncoding_Meta, std::__1::tuple<std::__1::b
  content::RenderFrameHostImpl::OnMessageReceived
  content::RenderProcessHostImpl::OnMessageReceived
  
Sanitizer: address (ASAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_media&range=441240:441358
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_media&range=441524:442831

Minimized Testcase (0.02 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv94oKyU8cMG_prrQt0Xj01TgU-46QqnuausHoIsLaCQ2RPeGNUPnqyMuscgp0vv0CA4RyR1O4OzHLnjrXiJENMnfcnTbRjndMxr_R10yZcaZEypn-09gYc4jsxe8-BekZO7khGdMb6UYP3yZQ0h13pIANdzY1vkIG7-tw56dIAAnGpGktByxqBgxedih4MbI45SNoQDpSw7DQO_9f1tG37gSBOVlSuN5Gz2w7NX0cm3WSXqoKDb6S5-ml7-Vzgam7aoKjMunH8k4jppmirbF4PdbphZwKwEvJHqRbuZroRr6ojQGLErJTYp3MOlmiWoEOI0UzQQ8M2cs6j24t_6lIMiVkB61Aj2LLc2ZVKD--1yDulrQCHo8BWfzKI76CQe97VcZMMU-58Fat_uXTWzjV1-VkcMs8Q?testcase_id=6354622894833664
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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.