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Issue metadata

Status: WontFix
Owner:
Closed: Feb 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Abrt in blink::BlobBytesProvider::AppendData

Project Member Reported by ClusterFuzz, Feb 24 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5846005430616064

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_tsan_chrome_mp
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x03e900003372
Crash State:
  blink::BlobBytesProvider::AppendData
  blink::BlobData::AppendDataInternal
  blink::BlobData::AppendBytes
  
Sanitizer: thread (TSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_tsan_chrome_mp&range=530275:530282

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5846005430616064

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 24 2018

Components: Blink>FileAPI
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, Feb 24 2018

Labels: Test-Predator-Auto-Owner
Owner: mek@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/db1b4e28db01ef1f2fa9f138a426165f636f07cc (Eliminate blink::BlobDataItem.).

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.

Comment 3 by mek@chromium.org, Feb 24 2018

This just seems to be a OOM. Although I would have expected the before-code to OOM just as much...

Comment 4 by mek@chromium.org, Feb 26 2018

And I can't even reproduce this... both before and after my suspected change I get the expected Uncaught RangeError: Array buffer allocation failed instead of whatever clusterfuzz was getting here... 

Comment 5 by mek@chromium.org, Feb 26 2018

Status: WontFix (was: Assigned)
And I can reproduce the described behavior with the configuration clusterfuzz was using here, but (as I expected) there's no difference in behavior before/after the suspected regression changelist.

Either way this seems like a won't fix. Creating a blob from data in memory that is too big to fit in memory causes OOM seems like everything is working as intended.
Project Member

Comment 6 by ClusterFuzz, Mar 5 2018

Labels: Needs-Feedback
ClusterFuzz testcase 5846005430616064 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.
Components: Blink>Storage>FileAPI
Components: -Blink>FileAPI

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