linux-kernel - [peterz-queue:objtool/core 33/37] vmlinux.o: warning: objtool: do_int80_syscall_32()+0x60: return with modified stack frame

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Date:   Wed, 13 Oct 2021 09:12:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [peterz-queue:objtool/core 33/37] vmlinux.o: warning: objtool:
 do_int80_syscall_32()+0x60: return with modified stack frame

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git objtool/core
head:   2c2219e14a94c00327f7dcdfe141a56e27471dd4
commit: 6726f6822d013fe79fe9ceb4c48ce0f514e535f7 [33/37] objtool,x86: Use mergable sections
config: x86_64-randconfig-a006-20211012 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=6726f6822d013fe79fe9ceb4c48ce0f514e535f7
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue objtool/core
        git checkout 6726f6822d013fe79fe9ceb4c48ce0f514e535f7
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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 >>):

>> vmlinux.o: warning: objtool: do_int80_syscall_32()+0x60: return with modified stack frame
>> vmlinux.o: warning: objtool: .altinstr_replacement.ffd0+0x2: stack state mismatch: reg1[3]=-2-32 reg2[3]=-1+0
>> vmlinux.o: warning: objtool: do_int80_syscall_32()+0x52: stack state mismatch: reg1[3]=-2-32 reg2[3]=-1+0

---
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" (38674 bytes)