linux-kernel - [meghadey-crypto:crypto-avx512 5/6] arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aesni_gcm_init_avx_512()+0xa: unsupported stack pointer realignment

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Date:   Fri, 1 Oct 2021 12:41:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     Megha Dey <megha.dey@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Tomasz Kantecki <tomasz.kantecki@...el.com>
Subject: [meghadey-crypto:crypto-avx512 5/6]
 arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool:
 aesni_gcm_init_avx_512()+0xa: unsupported stack pointer realignment

Hi Megha,

First bad commit (maybe != root cause):

tree:   https://github.com/meghadey/crypto crypto-avx512
head:   9c8c2ca77f6e2575a130bddb9767d068e1162d71
commit: 377aede9f10ee28be954473668bc6d33c6c9db75 [5/6] crypto: aesni - AVX512 version of AESNI-GCM using VPCLMULQDQ
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/meghadey/crypto/commit/377aede9f10ee28be954473668bc6d33c6c9db75
        git remote add meghadey-crypto https://github.com/meghadey/crypto
        git fetch --no-tags meghadey-crypto crypto-avx512
        git checkout 377aede9f10ee28be954473668bc6d33c6c9db75
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/

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

All warnings (new ones prefixed by >>):

>> arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aesni_gcm_init_avx_512()+0xa: unsupported stack pointer realignment
>> arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aesni_gcm_enc_update_avx_512()+0xa: unsupported stack pointer realignment
>> arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aesni_gcm_dec_update_avx_512()+0xa: unsupported stack pointer realignment
>> arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aesni_gcm_finalize_avx_512()+0xa: unsupported stack pointer realignment
>> arch/x86/crypto/aesni-intel_avx512-x86_64.o: warning: objtool: aes_gcm_precomp_avx_512()+0xa: unsupported stack pointer realignment

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (66571 bytes)