Null-dereference READ in blink::FirstLetterPseudoElement::AttachFirstLetterTextLayoutObjects |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=6676793385025536 Fuzzer: inferno_twister Job Type: linux_msan_content_shell_drt Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: blink::FirstLetterPseudoElement::AttachFirstLetterTextLayoutObjects blink::Element::RebuildPseudoElementLayoutTree blink::Element::RebuildLayoutTree Sanitizer: memory (MSAN) Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=518240:518474 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6676793385025536 Issue filed automatically. See https://github.com/google/clusterfuzz-tools for more information.
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Apr 9 2018
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Apr 18 2018
I took a bit of a look at this and it seems the problem is cause by FirstLetterPseudoElement::FirstLetterTextLayoutObject returning nullptr but the code assumes it will not do that. That's as far as I'm going to go.
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Jun 30 2018
ClusterFuzz has detected this issue as fixed in range 571663:571666. Detailed report: https://clusterfuzz.com/testcase?key=6676793385025536 Fuzzer: inferno_twister Job Type: linux_msan_content_shell_drt Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: blink::FirstLetterPseudoElement::AttachFirstLetterTextLayoutObjects blink::Element::RebuildPseudoElementLayoutTree blink::Element::RebuildLayoutTree Sanitizer: memory (MSAN) Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=518240:518474 Fixed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=571663:571666 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6676793385025536 See https://github.com/google/clusterfuzz-tools for more information. If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
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Jun 30 2018
ClusterFuzz testcase 6676793385025536 is verified as fixed, so closing issue as verified. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue. |
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Comment 1 by ClusterFuzz
, Apr 8 2018Labels: Test-Predator-Auto-Components