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objdump says 4 bytes, but insn_get_length() says 2 #992

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nickdesaulniers opened this issue Apr 13, 2020 · 0 comments
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objdump says 4 bytes, but insn_get_length() says 2 #992

nickdesaulniers opened this issue Apr 13, 2020 · 0 comments
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[ARCH] x86_64 This bug impacts ARCH=x86_64 [BUG] Untriaged Something isn't working Needs Backport Should be backported to either linux-stable tree or latest llvm release branch. [Reported-by] kbuild test robot Reported-by: kbuild test robot <lkp@intel.com> wontfix This will not be worked on

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nickdesaulniers commented Apr 13, 2020

via 0day bot

> >> Warning: ffffffff81ca0d60: 0f ff 49 8d ud0 -0x73(%rcx),%ecx
>    Warning: objdump says 4 bytes, but insn_get_length() says 2
>    Warning: arch/x86/tools/test_get_len found difference at <memcpy_page_flushcache>:ffffffff81ca026a

that report was a randconfig on 4.14. Looks like test_get_len exists in 4.14 but was removed between then and 4.19.  Oh, it was renamed to insn_decoder_test in commit 6b63dd1 ("x86/tools: Rename test_get_len to insn_decoder_test")
ud0 looks like ud2...
@nickdesaulniers nickdesaulniers added [BUG] Untriaged Something isn't working [ARCH] x86_64 This bug impacts ARCH=x86_64 [Reported-by] kbuild test robot Reported-by: kbuild test robot <lkp@intel.com> labels Apr 13, 2020
@nickdesaulniers nickdesaulniers added the Needs Backport Should be backported to either linux-stable tree or latest llvm release branch. label Mar 1, 2021
@nickdesaulniers nickdesaulniers added the wontfix This will not be worked on label Apr 28, 2021
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[ARCH] x86_64 This bug impacts ARCH=x86_64 [BUG] Untriaged Something isn't working Needs Backport Should be backported to either linux-stable tree or latest llvm release branch. [Reported-by] kbuild test robot Reported-by: kbuild test robot <lkp@intel.com> wontfix This will not be worked on
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