From:   Samuel Zeter <samuelzeter@gmail.com>
Cc:     samuelzeter@gmail.com, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        linux-kernel@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 0/2] *** Fix reformat_objdump.awk ***
Date:   Thu,  6 Jan 2022 13:36:03 +1100
Message-Id: <20220106023606.283953-1-samuelzeter@gmail.com>
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These are two small patches which originally dealt with
the problem found at:

https://github.com/ClangBuiltLinux/linux/issues/1364

The original steps to reproduce were:
$ make -skj"$(nproc)" LLVM=1 LLVM_IAS=1 defconfig
$ scripts/config -e X86_DECODER_SELFTEST
$ make -skj"$(nproc)" LLVM=1 LLVM_IAS=1 olddefconfig bzImage

Which resulted in the error:
arch/x86/tools/insn_decoder_test: warning: objdump says 0 bytes, but
insn_get_length() says 2

Upon inspection it turned out llvm-objdump was formatting its
output differently, which caused objdump_reformat.awk to incorrectly
output its values.

After fixing that bug, a second one was seen where the instruction
"wait" was incorrectly matched with "fwait", which again caused
insn_decoder_test to fail.

Samuel Zeter (2):
  arch/x86/tools/objdump_reformat.awk: Ensure regex matches fwait
  arch/x86/tools/objdump_reformat.awk: Allow for spaces

 arch/x86/tools/objdump_reformat.awk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.32.0