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Issue 804223 link

Starred by 2 users

Issue metadata

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



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Integer-overflow in glsl::OutputASM::loopCount

Project Member Reported by ClusterFuzz, Jan 22 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6201451872518144

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  glsl::OutputASM::loopCount
  glsl::OutputASM::visitLoop
  TIntermLoop::traverse
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=529739:529747

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6201451872518144

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jan 22 2018

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: brajkumar@chromium.org
Labels: M-66 Test-Predator-Wrong
Owner: capn@chromium.org
Status: Assigned (was: Untriaged)
Assigning to SwiftShader team for more updates.

@capn - Could you please look into this issue?

Thanks! 

This might be related to a tracking bug: https://bugs.chromium.org/p/swiftshader/issues/detail?id=85
Project Member

Comment 4 by ClusterFuzz, May 30 2018

ClusterFuzz has detected this issue as fixed in range 562443:562447.

Detailed report: https://clusterfuzz.com/testcase?key=6201451872518144

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  glsl::OutputASM::loopCount
  glsl::OutputASM::visitLoop
  TIntermLoop::traverse
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=529739:529747
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=562443:562447

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6201451872518144

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 5 by ClusterFuzz, May 30 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6201451872518144 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Affected by https://swiftshader-review.googlesource.com/18988, but I'm not sure if that actually fixed it or just moved the issue.

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