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TextOffsetMapping::ComputeContainigBlock() crashes with all elements are float |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=4754497298235392 Fuzzer: bj_broddelwerk Job Type: linux_ubsan_vptr_chrome Platform Id: linux Crash Type: Bad-cast Crash Address: 0x222bb8420000 Crash State: Bad-cast to blink::LayoutBlock from blink::LayoutText blink::TextOffsetMapping::ComputeContainigBlock blink::NextWordPosition Sanitizer: undefined (UBSAN) Recommended Security Severity: High Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=550102:550107 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4754497298235392 Issue filed automatically. See https://github.com/google/clusterfuzz-tools for more information.
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Apr 12 2018
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/1324be868df000cb2e070199ce2d10cd0c5a2706 (Make NextWordPosition() to utilize TextOffsetMapping). 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.
,
Apr 13 2018
I'm working now...
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Apr 13 2018
,
Apr 13 2018
Lower to Pri-3, since this is caused by unusual HTML.
Here is minimal HTML to reproduce this:
<!doctype>
<html style="float:right">
<body style="float:right">foo</body>
<script>
const selection = window.getSelection();
selection.collapse(document.body, 0);
selection.modify('extend', 'forward', 'word');
</script>
Layout Tree:
LayoutBlockFlow (floating) {HTML} at (764,0) size 36x36
LayoutBlockFlow (floating) {BODY} at (8,8) size 20x20
LayoutText {#text} at (0,0) size 20x19
text run at (0,0) width 20: "foo"
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Apr 13 2018
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Apr 13 2018
This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it. If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Apr 13 2018
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Apr 17 2018
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/dec40a582a3805fb28dfd67ba49fc2cdb28a1b6c commit dec40a582a3805fb28dfd67ba49fc2cdb28a1b6c Author: Yoshifumi Inoue <yosin@chromium.org> Date: Tue Apr 17 04:30:18 2018 Revert "Make NextWordPosition() to utilize TextOffsetMapping" This reverts commit 1324be868df000cb2e070199ce2d10cd0c5a2706 for M67/Beta TextOffsetMapping is not ready for release. It should support edge cases. TBR=yosin@chromium.org Bug: 832055 , 832061 , 832101 , 832261 , 832350 , 832497 , 832639 , 833172 , 833180 Change-Id: Iac5f58716619a626650088a55109922daf1a4f3a Reviewed-on: https://chromium-review.googlesource.com/1013445 Reviewed-by: Yoshifumi Inoue <yosin@chromium.org> Cr-Commit-Position: refs/branch-heads/3396@{#36} Cr-Branched-From: 9ef2aa869bc7bc0c089e255d698cca6e47d6b038-refs/heads/master@{#550428} [modify] https://crrev.com/dec40a582a3805fb28dfd67ba49fc2cdb28a1b6c/third_party/blink/renderer/core/editing/visible_units_word.cc [modify] https://crrev.com/dec40a582a3805fb28dfd67ba49fc2cdb28a1b6c/third_party/blink/renderer/core/editing/visible_units_word_test.cc
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Apr 17 2018
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Apr 17 2018
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Apr 17 2018
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Apr 17 2018
This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it. If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Apr 17 2018
Please mark security bugs as fixed as soon as the fix lands, and before requesting merges. This update is based on the merge- labels applied to this issue. Please reopen if this update was incorrect. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Apr 18 2018
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Apr 24 2018
ClusterFuzz testcase 4754497298235392 is still reproducing on tip-of-tree build (trunk). Please re-test your fix against this testcase and if the fix was incorrect or incomplete, please re-open the bug. Otherwise, ignore this notification and add ClusterFuzz-Wrong label.
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Jun 5 2018
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Jul 25
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 |
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Comment 1 by ClusterFuzz
, Apr 12 2018Labels: Test-Predator-Auto-Components