[llvm-bugs] [Bug 24941] New: UNREACHABLE executed at lib/Target/X86/Disassembler/X86Disassembler.cpp:379

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=24941

            Bug ID: 24941
           Summary: UNREACHABLE executed at
                    lib/Target/X86/Disassembler/X86Disassembler.cpp:379
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: kcc at google.com
                CC: craig.topper at gmail.com, daniel.sanders at imgtec.com,
                    llvm-bugs at lists.llvm.org, sami.liedes at iki.fi
    Classification: Unclassified

echo "0x62 0xf1 0xdf 0x8 0xc2 0x28 0xcc 0x22" | ./bin/llvm-mc -triple
x86_64-linux-gnu  -disassemble
UNREACHABLE executed at lib/Target/X86/Disassembler/X86Disassembler.cpp:379!

Similar to bug 22743, but reproduces on fresh r248580

Found by libFuzzer
(./bin/llvm-mc-fuzzer -triple x86_64-linux-gnu  -disassemble -fuzzer-args 
-max_len=8)

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