Null-dereference READ in blink::CSSToLengthConversionData::FontSizes::Ex |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=6726677970026496 Fuzzer: inferno_twister Job Type: linux_ubsan_vptr_content_shell_drt Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000020 Crash State: blink::CSSToLengthConversionData::FontSizes::Ex blink::CSSToLengthConversionData::ZoomedComputedPixels blink::StyleBuilderConverter::ConvertBorderWidth Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=598932:598934 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6726677970026496 Issue filed automatically. See https://github.com/google/clusterfuzz-tools for more information.
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Oct 22
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/150a1839886ffde6659dbc249f942d7868096390 (Bail out of computing style for invisible elements). If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
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Oct 22
I think this is unrelated to my changes in that CL, that only moves a check of attributes.
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Oct 26
ClusterFuzz has detected this issue as fixed in range 602684:602685. Detailed report: https://clusterfuzz.com/testcase?key=6726677970026496 Fuzzer: inferno_twister Job Type: linux_ubsan_vptr_content_shell_drt Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000020 Crash State: blink::CSSToLengthConversionData::FontSizes::Ex blink::CSSToLengthConversionData::ZoomedComputedPixels blink::StyleBuilderConverter::ConvertBorderWidth Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=598932:598934 Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=602684:602685 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6726677970026496 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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Oct 26
ClusterFuzz testcase 6726677970026496 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
, Oct 22Labels: Test-Predator-Auto-Components