[llvm-bugs] Issue 5044 in oss-fuzz: llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: N->getNodeId() == -1 && "Node already inserted!"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com,  
igm... at gmail.com, llvm-b... at lists.llvm.org, v... at apple.com,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2018-01-09
Type: Bug

New issue 5044 by ClusterFuzz-External: llvm/llvm-isel-fuzzer--x86_64-O2:  
ASSERT: N->getNodeId() == -1 && "Node already inserted!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5044

Detailed report: https://oss-fuzz.com/testcase?key=4701442003697664

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--x86_64-O2
Fuzz target binary: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   N->getNodeId() == -1 && "Node already inserted!"
   ScheduleDAGRRList::PickNodeToScheduleBottomUp
   ScheduleDAGRRList::Schedule

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201710160455:201710190451

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=4701442003697664

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

When you fix this bug, please
   * mention the fix revision(s).
   * state whether the bug was a short-lived regression or an old bug in any  
stable releases.
   * add any other useful information.
This information can help downstream consumers.

If you have questions for the OSS-Fuzz team, please file an issue at  
https://github.com/google/oss-fuzz/issues.

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