linux-kernel - [tip:x86/alternatives 1/1] error[E0588]: packed type cannot transitively contain a `#[repr(align)]` type

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Date:   Fri, 6 Jan 2023 08:02:42 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Borislav Petkov (AMD)" <bp@...en8.de>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Ingo Molnar <mingo@...nel.org>
Subject: [tip:x86/alternatives 1/1] error[E0588]: packed type cannot
 transitively contain a `#[repr(align)]` type

Hi Borislav,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/alternatives
head:   5d1dd961e74334a2178264193ea813d44ce5e725
commit: 5d1dd961e74334a2178264193ea813d44ce5e725 [1/1] x86/alternatives: Add alt_instr.flags
config: x86_64-rhel-8.3-rust
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=5d1dd961e74334a2178264193ea813d44ce5e725
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip x86/alternatives
        git checkout 5d1dd961e74334a2178264193ea813d44ce5e725
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 prepare

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> error[E0588]: packed type cannot transitively contain a `#[repr(align)]` type
   --> rust/bindings/bindings_generated.rs:6182:1
   |
   6182 | / pub struct alt_instr {
   6183 | |     pub instr_offset: s32,
   6184 | |     pub repl_offset: s32,
   6185 | |     pub __bindgen_anon_1: alt_instr__bindgen_ty_1,
   6186 | |     pub instrlen: u8_,
   6187 | |     pub replacementlen: u8_,
   6188 | | }
   | |_^
   |
   note: `alt_instr__bindgen_ty_1__bindgen_ty_1` has a `#[repr(align)]` attribute
   --> rust/bindings/bindings_generated.rs:6199:1
   |
   6199 | / pub struct alt_instr__bindgen_ty_1__bindgen_ty_1 {
   6200 | |     pub _bitfield_1: __BindgenBitfieldUnit<[u8; 4usize], u16>,
   6201 | | }
   | |_^
   note: `alt_instr` contains a field of type `alt_instr__bindgen_ty_1`
   --> rust/bindings/bindings_generated.rs:6185:9
   |
   6185 |     pub __bindgen_anon_1: alt_instr__bindgen_ty_1,
   |         ^^^^^^^^^^^^^^^^
   note: ...which contains a field of type `alt_instr__bindgen_ty_1__bindgen_ty_1`
   --> rust/bindings/bindings_generated.rs:6192:9
   |
   6192 |     pub __bindgen_anon_1: alt_instr__bindgen_ty_1__bindgen_ty_1,
   |         ^^^^^^^^^^^^^^^^
--
>> error: aborting due to previous error

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

View attachment "config" of type "text/plain" (167695 bytes)