linux-kernel - [ammarfaizi2-block:tglx/devel/depthtracking 33/59] arch/x86/kvm/emulate.o: warning: objtool: seto+0x0: unreachable instruction

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Date:   Thu, 18 Aug 2022 23:50:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org, Ammar Faizi <ammarfaizi2@...weeb.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: [ammarfaizi2-block:tglx/devel/depthtracking 33/59]
 arch/x86/kvm/emulate.o: warning: objtool: seto+0x0: unreachable instruction

tree:   https://github.com/ammarfaizi2/linux-block tglx/devel/depthtracking
head:   7e7135a8ff18016dde7361f13b02c3d1f63edfdb
commit: 301b621edaa301dc3936a386920008a689ddd988 [33/59] objtool: Fix find_{symbol,func}_containing()
config: x86_64-randconfig-a002
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/ammarfaizi2/linux-block/commit/301b621edaa301dc3936a386920008a689ddd988
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block tglx/devel/depthtracking
        git checkout 301b621edaa301dc3936a386920008a689ddd988
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/

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

All warnings (new ones prefixed by >>):

>> arch/x86/kvm/emulate.o: warning: objtool: seto+0x0: unreachable instruction


objdump-func vmlinux.o seto:
0000 0000000000041790 <seto>:
0000    41790:	0f 90 c0             	seto   %al
0003    41793:	e9 00 00 00 00       	jmp    41798 <seto+0x8>	41794: R_X86_64_PLT32	__x86_return_thunk-0x4
0008    41798:	cc                   	int3
0009    41799:	cc                   	int3
000a    4179a:	cc                   	int3
000b    4179b:	cc                   	int3
000c    4179c:	cc                   	int3
000d    4179d:	cc                   	int3
000e    4179e:	cc                   	int3
000f    4179f:	cc                   	int3

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

View attachment "config" of type "text/plain" (158201 bytes)