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Issue metadata

Status: Verified
Owner:
Closed: Oct 3
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in spvtools::opt::BasicBlock::id

Project Member Reported by ClusterFuzz, Sep 18

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5794324527448064

Fuzzer: afl_spvtools_opt_performance_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  spvtools::opt::BasicBlock::id
  spvtools::opt::MergeReturnPass::PredicateBlocks
  spvtools::opt::MergeReturnPass::ProcessStructured
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=591974:592067

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5794324527448064

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Sep 18

Components: Internals>GPU>Internals
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, Sep 18

Labels: Test-Predator-Auto-Owner
Owner: stevenperron@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools/+/7075c49923da0e8cb0d16027ee5e204517acd569 (Add dummy loop in merge-return. (#1896)).

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.
Project Member

Comment 3 by ClusterFuzz, Oct 3

ClusterFuzz has detected this issue as fixed in range 595866:595872.

Detailed report: https://clusterfuzz.com/testcase?key=5794324527448064

Fuzzer: afl_spvtools_opt_performance_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  spvtools::opt::BasicBlock::id
  spvtools::opt::MergeReturnPass::PredicateBlocks
  spvtools::opt::MergeReturnPass::ProcessStructured
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=591974:592067
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=595866:595872

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5794324527448064

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 4 by ClusterFuzz, Oct 3

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5794324527448064 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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