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Issue 798127 link

Starred by 2 users

Issue metadata

Status: Verified
Owner:
Closed: Jun 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 2
Type: Bug



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Null-dereference READ in TParseContext::addConstructor

Project Member Reported by ClusterFuzz, Dec 30 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5265147089387520

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  TParseContext::addConstructor
  TParseContext::addFunctionCallOrMethod
  yyparse
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5265147089387520

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Dec 30 2017

Components: Internals>GPU>SwiftShader
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.
Cc: pnangunoori@chromium.org
Labels: Test-Predator-Wrong-CLs M-65
Owner: capn@chromium.org
Status: Assigned (was: Untriaged)
@capn -- Could you please look into this issue. 
Assigning this issue to you, as per the update we received from you in the  Issue 781505 . Please reassign if it is not related to your changes.
Thanks. 

Comment 3 by capn@chromium.org, Jan 2 2018

Cc: sugoi@chromium.org
Labels: -Pri-1 Pri-2
This is another edge case constant folding bug. Will try to fix them this quarter.
Project Member

Comment 4 by ClusterFuzz, Feb 18 2018

Labels: OS-Mac
Project Member

Comment 5 by ClusterFuzz, Jun 19 2018

ClusterFuzz has detected this issue as fixed in range 568257:568274.

Detailed report: https://clusterfuzz.com/testcase?key=5265147089387520

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  TParseContext::addConstructor
  TParseContext::addFunctionCallOrMethod
  yyparse
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=568257:568274

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5265147089387520

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 6 by ClusterFuzz, Jun 19 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5265147089387520 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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