x86_64 build failure of next-20220715 and next-20220718 with clang

Hi All,

Not sure if its reported, builds of x86_64 allmodconfig of next-20220715 and next-20220718 with clang are showing lots of new warnings like:

warning: objtool: asan.module_dtor+0x15: 'naked' return found in RETHUNK build

Hi Sudip,

Quoted 6 lines · Sudip Mukherjee (Codethink)

Hi All,

Not sure if its reported, builds of x86_64 allmodconfig of next-20220715 and next-20220718 with clang are showing lots of new warnings like:

warning: objtool: asan.module_dtor+0x15: 'naked' return found in RETHUNK build

Thanks for the report! Nick fixed this in LLVM, it was a problem with compiler generated functions like the ones that are generated with KASAN, KCSAN, and GCOV having 'ret' instead of 'jmp __x86_return_thunk':

https://github.com/llvm/llvm-project/commit/140bfdca60ae8b1b2ad115846379e3c9ca914bfb

With that change, you should see no warnings of that nature with allmodconfig anymore. Thanks for the continuous testing!