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Issue 901784 link

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Issue metadata

Status: WontFix
Owner:
Closed: Nov 5
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Ill in blink::TextDecoder::decode

Project Member Reported by ClusterFuzz, Nov 5

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5295691520540672

Fuzzer: inferno_twister
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: Ill
Crash Address: 0x55cbc153cfe6
Crash State:
  blink::TextDecoder::decode
  blink::TextDecoder::decode
  blink::V8TextDecoder::decodeMethodCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_mp&range=605010:605011

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5295691520540672

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Nov 5

Components: Blink>TextEncoding
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Nov 5

Labels: Test-Predator-Auto-Owner
Owner: jsb...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/dae5b388b44dae4dc11668dba210bbb92d72d969 (Add bounds CHECK to UTF-8 decoder memory allocation.).

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.
Cc: palmer@chromium.org
Status: WontFix (was: Assigned)
This should be WAI following fix for issue 901030.


Cc: mbarbe...@chromium.org infe...@chromium.org
I'm not sure; I wonder if the "Ill" means "Illegal instruction"? I don't think `ValueOrDie` is supposed to die in that way; it calls `CHECK` which is `IMMEDIATE_CRASH` which is `__builtin_unreachable` in Clang. +ClusterFuzz people to tell us what CF should see here.
Project Member

Comment 5 by ClusterFuzz, Nov 6

Labels: OS-Mac
Project Member

Comment 6 by ClusterFuzz, Nov 12

Labels: Needs-Feedback
ClusterFuzz testcase 5295691520540672 is still reproducing on tip-of-tree build (trunk).

If this testcase was not reproducible locally or unworkable, ignore this notification and we will file another bug soon with hopefully a better and workable testcase.

Otherwise, if this is not intended to be fixed (e.g. this is an intentional crash), please add ClusterFuzz-Ignore label to prevent future bug filing with similar crash stacktrace.
Cc: ivica.bo...@mips.com tebbi@chromium.org
 Issue 906922  has been merged into this issue.

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