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Issue metadata

Status: WontFix
Owner:
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Stack-overflow in blink::FontCache::GetFontPlatformData

Project Member Reported by ClusterFuzz, Mar 18 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6327368889925632

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: Stack-overflow
Crash Address: 0x7fff56fb5bf8
Crash State:
  blink::FontCache::GetFontPlatformData
  blink::FontCache::GetFontData
  blink::CSSFontSelector::GetFontData
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=537307:537349

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6327368889925632

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Mar 18 2018

Labels: OS-Linux
Project Member

Comment 2 by ClusterFuzz, Mar 18 2018

Components: Blink>CSS Platform
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 3 by ClusterFuzz, Mar 18 2018

Labels: Test-Predator-Auto-Owner
Owner: futhark@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/0aca50f1552c882bc72ed5c419085fa975847a9c ([Squad] Unnecessary use of mutable style in vp propagation.).

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: futhark@chromium.org
Components: -Blink>CSS -Platform Blink>Layout
Owner: e...@chromium.org
It's a very deep table layout recursion with a stack overflow. I haven't checked if it's simply a deep enough tree or if there's a real bug. Where it crashes depends on platform and configuration, so GetFontPlatformData is sort of arbitrary.

Comment 5 by e...@chromium.org, Mar 19 2018

Status: WontFix (was: Assigned)
Project Member

Comment 6 by ClusterFuzz, Mar 26 2018

Labels: Needs-Feedback
ClusterFuzz testcase 6327368889925632 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.

Comment 7 by e...@chromium.org, Mar 26 2018

Labels: ClusterFuzz-Ignore
Like the previous eight million variations of the same test case this is a 
stack overflows due to a deeply nested DOM tree and as such is considered WontFix. 

Please stop filing these bugs.

Project Member

Comment 8 by ClusterFuzz, Apr 14 2018

ClusterFuzz has detected this issue as fixed in range 550604:550609.

Detailed report: https://clusterfuzz.com/testcase?key=6327368889925632

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: Stack-overflow
Crash Address: 0x7fff56fb5bf8
Crash State:
  blink::FontCache::GetFontPlatformData
  blink::FontCache::GetFontData
  blink::CSSFontSelector::GetFontData
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=537307:537349
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=550604:550609

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6327368889925632

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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