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<div style="font-family: arial, sans-serif">Status: New<br/>Owner: ----<br/>CC: <a href="mailto:kcc@google.com">kcc@google.com</a>, <a href="mailto:mascasa@google.com">mascasa@google.com</a>, <a href="mailto:jdevlieg...@apple.com">jdevlieg...@apple.com</a>, <a href="mailto:igm...@gmail.com">igm...@gmail.com</a>, <a href="mailto:llvm-b...@lists.llvm.org">llvm-b...@lists.llvm.org</a>, <a href="mailto:v...@apple.com">v...@apple.com</a>, <a href="mailto:akils...@apple.com">akils...@apple.com</a> <br/>Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer Proj-llvm Reported-2017-12-21<br/>Type: Bug-Security<br/><br/>New issue 4707 by ClusterFuzz-External: llvm/llvm-isel-fuzzer--x86_64-O2: Use-after-poison in DAGCombiner::useDivRem<br/><a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4707">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4707</a><br/><br/>Detailed report: <a href="https://oss-fuzz.com/testcase?key=4685347326787584">https://oss-fuzz.com/testcase?key=4685347326787584</a><br/><br/>Project: llvm<br/>Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--x86_64-O2<br/>Fuzz target binary: llvm-isel-fuzzer--x86_64-O2<br/>Job Type: libfuzzer_asan_llvm<br/>Platform Id: linux<br/><br/>Crash Type: Use-after-poison READ 8<br/>Crash Address: 0x6210000273c0<br/>Crash State:<br/> DAGCombiner::useDivRem<br/> DAGCombiner::visit<br/> DAGCombiner::combine<br/> <br/>Sanitizer: address (ASAN)<br/><br/>Recommended Security Severity: High<br/><br/>Regressed: <a href="https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712190608%3A201712210617">https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712190608:201712210617</a><br/><br/>Reproducer Testcase: <a href="https://oss-fuzz.com/download?testcase_id=4685347326787584">https://oss-fuzz.com/download?testcase_id=4685347326787584</a><br/><br/>Issue filed automatically.<br/><br/>See <a href="https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md">https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md</a> for more information.<br/><br/>When you fix this bug, please<br/> * mention the fix revision(s).<br/> * state whether the bug was a short-lived regression or an old bug in any stable releases.<br/> * add any other useful information.<br/>This information can help downstream consumers.<br/><br/>If you have questions for the OSS-Fuzz team, please file an issue at <a href="https://github.com/google/oss-fuzz/issues">https://github.com/google/oss-fuzz/issues</a>.<br/><br/>-- <br/>You received this message because:<br/> 1. You were specifically CC'd on the issue<br/><br/>You may adjust your notification preferences at:<br/><a href="https://bugs.chromium.org/hosting/settings">https://bugs.chromium.org/hosting/settings</a><br/><br/>Reply to this email to add a comment.</div>
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