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| author | Ana Pazos <apazos@codeaurora.org> | 2018-09-07 18:23:19 +0000 |
|---|---|---|
| committer | Ana Pazos <apazos@codeaurora.org> | 2018-09-07 18:23:19 +0000 |
| commit | b97d18945b821fe4f9b4c7059eb87e2a8734ab5d (patch) | |
| tree | e9067228646b62a0224792bc0cbb7b55bf12fa54 /llvm/test/MC/Disassembler | |
| parent | f06ffeee21aabbf1ae94a06df4374f296ab81ddb (diff) | |
| download | bcm5719-llvm-b97d18945b821fe4f9b4c7059eb87e2a8734ab5d.tar.gz bcm5719-llvm-b97d18945b821fe4f9b4c7059eb87e2a8734ab5d.zip | |
[RISCV] Fix AddressSanitizer heap-buffer-overflow in disassembling
Summary:
RISCVDisassembler should check number of bytes available before reading them.
Crash noticed when enabling -DLLVM_USE_SANITIZER=Address.
This bug was uncovered by a LLVM MC Disassembler Protocol Buffer Fuzzer for the RISC-V assembly language.
Reviewers: asb
Reviewed By: asb
Subscribers: rbar, johnrusso, simoncook, sabuasal, niosHD, kito-cheng, shiva0217, zzheng, edward-jones, mgrang, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, asb
Differential Revision: https://reviews.llvm.org/D51708
llvm-svn: 341686
Diffstat (limited to 'llvm/test/MC/Disassembler')
| -rw-r--r-- | llvm/test/MC/Disassembler/RISCV/fuzzer-invalid.txt | 8 | ||||
| -rw-r--r-- | llvm/test/MC/Disassembler/RISCV/lit.local.cfg | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/llvm/test/MC/Disassembler/RISCV/fuzzer-invalid.txt b/llvm/test/MC/Disassembler/RISCV/fuzzer-invalid.txt new file mode 100644 index 00000000000..d90172d3d34 --- /dev/null +++ b/llvm/test/MC/Disassembler/RISCV/fuzzer-invalid.txt @@ -0,0 +1,8 @@ +# RUN: not llvm-mc -disassemble -triple=riscv32 < %s 2>&1 | FileCheck %s +# RUN: not llvm-mc -disassemble -triple=riscv64 < %s 2>&1 | FileCheck %s +# +# Test generated by a LLVM MC Disassembler Protocol Buffer Fuzzer +# for the RISC-V assembly language. + +[0xf9 0x95 0xab 0x99] +# CHECK: warning: invalid instruction encoding diff --git a/llvm/test/MC/Disassembler/RISCV/lit.local.cfg b/llvm/test/MC/Disassembler/RISCV/lit.local.cfg new file mode 100644 index 00000000000..d0b081e3e8b --- /dev/null +++ b/llvm/test/MC/Disassembler/RISCV/lit.local.cfg @@ -0,0 +1,3 @@ +if not 'RISCV' in config.root.targets: + config.unsupported = True + |
