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 #4, "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 issue, kindly re-assign if this is not related to your changes.
Thank You.

Doesn't look related to SiteIsolation.  Guessing it might be TextEncoding.

See also  issue 678444 ,  issue 678377 , and  issue 678359 , which may be dupes?

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

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5205461566750720

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  content::WebContentsImpl::SetEncoding
  DispatchToMethodImpl<content::RenderFrameHostImpl *, void
  DispatchToMethod<content::RenderFrameHostImpl *, void
  
Sanitizer: address (ASAN)

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

Minimized Testcase (0.02 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv967ajUw6_YQPPdwjYXVYeT1h1U7knw2R9K5__OF-8C4issU9LwBdOjbhJvp3gH9I9T3OQLfVuXYhNMXSO_nB-POzw98YjD6glMUvP4csiEH8lA3nC9e43rxLMOeGRF4t8PylJhSSGuHlALMy3qu_4t17GLJzeyx_121kjo0BD4vCsJqIFH6vKgRKi4YgroRG72TjbM53F-b-_oP8C022KEVyfBf-AaRxeciaWuk5xnMALkl8nfR2ONqGH4RPqjHbhMWz9cw34gCgOMmgsJAlmIkWpzesV4DaG4sxMS59wcnOVj8SAleLHesuqjFXfVjPU1GODijhznhMrKgL1UtiT219bLdkiYHSY3pS7Hbil8lczT2sbA?testcase_id=5205461566750720
<meta charset=HZ-GB-2312>


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.