On 3/16/21 4:27 PM, Borislav Petkov wrote:
Yet another useless report!
On Tue, Mar 16, 2021 at 07:50:10AM +0800, kernel test robot wrote:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/cpu
head: 301cddc21a157a3072d789a3097857202e550a24
commit: a89dfde3dc3c2dbf56910af75e2d8b11ec5308f6 [2/3] x86: Remove dynamic NOP
selection
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
What's cppcheck?
That?
Description-en: tool for static C/C++ code analysis (CLI)
Cppcheck is a command-line tool that tries to detect bugs that your
arch/x86/kernel/alternative.c:96:10: warning: Undefined behaviour, pointer
arithmetic 'x86nops+10' is out of bounds. [pointerOutOfBounds]
x86nops + 1 + 2 + 3 + 4,
^
arch/x86/kernel/alternative.c:97:10: warning: Undefined behaviour, pointer
arithmetic 'x86nops+15' is out of bounds. [pointerOutOfBounds]
x86nops + 1 + 2 + 3 + 4 + 5,
^
arch/x86/kernel/alternative.c:98:10: warning: Undefined behaviour, pointer
arithmetic 'x86nops+21' is out of bounds. [pointerOutOfBounds]
x86nops + 1 + 2 + 3 + 4 + 5 + 6,
^
arch/x86/kernel/alternative.c:99:10: warning: Undefined behaviour, pointer
arithmetic 'x86nops+28' is out of bounds. [pointerOutOfBounds]
x86nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
^
arch/x86/kernel/ftrace.c:304:7: warning: union member
'ftrace_op_code_union::code' is never used. [unusedStructMember]
char code[OP_REF_SIZE];
^
How do you trigger this?
/me ignores it until there's some info on how those things can be
reproduced.
Hi Borislav,
Sorry for the inconvenience, there's a bug in our system which sent
internal reports to outside.
please ignore the warnings.
Best Regards,
Rong Chen