[ammarfaizi2-block:tglx/devel/depthtracking 33/59] arch/x86/kernel/ftrace_64.o: warning: objtool: ftrace_caller+0x0: unreachable instruction
From: kernel test robot
Date: Thu Aug 18 2022 - 12:01:22 EST
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-a011 (https://download.01.org/0day-ci/archive/20220818/202208182339.nUcZuZWV-lkp@xxxxxxxxx/config)
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@xxxxxxxxx>
All warnings (new ones prefixed by >>):
>> arch/x86/kernel/ftrace_64.o: warning: objtool: ftrace_caller+0x0: unreachable instruction
objdump-func vmlinux.o ftrace_caller:
0000 0000000000062370 <ftrace_caller>:
0000 62370: 48 81 ec a8 00 00 00 sub $0xa8,%rsp
0007 62377: 48 89 44 24 50 mov %rax,0x50(%rsp)
000c 6237c: 48 89 4c 24 58 mov %rcx,0x58(%rsp)
0011 62381: 48 89 54 24 60 mov %rdx,0x60(%rsp)
0016 62386: 48 89 74 24 68 mov %rsi,0x68(%rsp)
001b 6238b: 48 89 7c 24 70 mov %rdi,0x70(%rsp)
0020 62390: 4c 89 44 24 48 mov %r8,0x48(%rsp)
0025 62395: 4c 89 4c 24 40 mov %r9,0x40(%rsp)
002a 6239a: 48 c7 44 24 78 00 00 00 00 movq $0x0,0x78(%rsp)
0033 623a3: 48 89 ea mov %rbp,%rdx
0036 623a6: 48 89 54 24 20 mov %rdx,0x20(%rsp)
003b 623ab: 48 8b b4 24 b0 00 00 00 mov 0xb0(%rsp),%rsi
0043 623b3: 48 8b bc 24 a8 00 00 00 mov 0xa8(%rsp),%rdi
004b 623bb: 48 89 bc 24 80 00 00 00 mov %rdi,0x80(%rsp)
0053 623c3: 48 83 ef 05 sub $0x5,%rdi
0057 623c7: 48 8d 8c 24 b0 00 00 00 lea 0xb0(%rsp),%rcx
005f 623cf: 48 89 8c 24 98 00 00 00 mov %rcx,0x98(%rsp)
--
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https://01.org/lkp