Detailed report: https://clusterfuzz.com/testcase?key=4750804070957056

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  bool blink::WebGLRenderingContextBase::ValidateTexImageSubRectangle<blink::Image
  blink::WebGLRenderingContextBase::TexImageImpl
  blink::WebGLRenderingContextBase::TexImageHelperHTMLCanvasElement
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=506249:506271

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4750804070957056

Additional requirements: Requires Gestures

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.