Looks similar to  bug 638185 , but not sure. Assigning to chrishtr@ for now, please feel free to re-assign back to me if this is not related to 638185.

ClusterFuzz has detected this issue as fixed in range 412277:412329.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4868190553505792

Fuzzer: inferno_twister
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x7f8916f02268
Crash State:
  Bad-cast to blink::LayoutBox from blink::LayoutSVGEllipse
  blink::LayoutObject::positionForPoint
  blink::LayoutBox::clippingRect
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_cfi_chrome&range=411752:411843
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_cfi_chrome&range=412277:412329

Minimized Testcase (0.13 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv94DRL-dS_2LgWexOmZW_lYWVbvfAklACrnS-hO9i6g79kIK4lDnJRLu3TWeIoGDfCX8XDPbHMh6k1pg40s5nfie0XYItmT0YXNiJQQomCv8Ah4Aj2Bqjr8dCXE1Ox0pRExRLlJkjXPmxAqku3pdjb3dkuqhcw?testcase_id=4868190553505792
<svg>
        <circle stroke=black</body><style>
*:nth-last-of-type(odd) { animation: move 142.304131336s both -16ms; contain: strict;


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.

ClusterFuzz testcase is verified as fixed, closing issue.

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

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