vmlinux.o: warning: objtool: cfi_probe_chip.cold+0x0: unreachable instruction
From: kernel test robot
Date: Sat Oct 14 2023 - 16:32:18 EST
Hi Josh,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 70f8c6f8f8800d970b10676cceae42bba51a4899
commit: 5e3992fe72748ed3892be876f09d4d990548b7af objtool: Limit unreachable warnings to once per function
date: 5 months ago
config: x86_64-randconfig-074-20230824 (https://download.01.org/0day-ci/archive/20231015/202310150404.ZaKODSd7-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231015/202310150404.ZaKODSd7-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310150404.ZaKODSd7-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
vmlinux.o: warning: objtool: cfi_chip_setup+0x1ba: unreachable instruction
vmlinux.o: warning: objtool: cfi_probe_chip+0x72: unreachable instruction
vmlinux.o: warning: objtool: cfi_staa_resume+0x184: unreachable instruction
vmlinux.o: warning: objtool: do_write_buffer+0x1e4: unreachable instruction
vmlinux.o: warning: objtool: do_read_onechip+0x132: unreachable instruction
vmlinux.o: warning: objtool: do_unlock_oneblock+0x146: unreachable instruction
vmlinux.o: warning: objtool: do_lock_oneblock+0x146: unreachable instruction
vmlinux.o: warning: objtool: do_erase_oneblock+0x118: unreachable instruction
vmlinux.o: warning: objtool: fixup_sst39vf_rev_b+0x13a: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_resume+0x1cd: unreachable instruction
vmlinux.o: warning: objtool: cfi_check_err_status+0x17c: unreachable instruction
vmlinux.o: warning: objtool: chip_ready+0x17c: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_panic_wait+0xe9: unreachable instruction
vmlinux.o: warning: objtool: do_panic_write_oneword+0x2f5: unreachable instruction
vmlinux.o: warning: objtool: do_write_oneword_once+0x133: unreachable instruction
vmlinux.o: warning: objtool: fixup_sst38vf640x_sectorsize+0x147: unreachable instruction
vmlinux.o: warning: objtool: put_chip.constprop.0+0x39f: unreachable instruction
vmlinux.o: warning: objtool: get_chip+0x553: unreachable instruction
vmlinux.o: warning: objtool: do_write_oneword+0x376: unreachable instruction
vmlinux.o: warning: objtool: do_atmel_unlock+0x16e: unreachable instruction
vmlinux.o: warning: objtool: do_atmel_lock+0x171: unreachable instruction
vmlinux.o: warning: objtool: fwh_xxlock_oneblock+0x1a4: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_read+0x199: unreachable instruction
vmlinux.o: warning: objtool: do_erase_chip+0x375: unreachable instruction
vmlinux.o: warning: objtool: do_write_buffer+0x1ec: unreachable instruction
vmlinux.o: warning: objtool: do_erase_oneblock+0x383: unreachable instruction
vmlinux.o: warning: objtool: do_otp_lock+0x171: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_otp_walk+0x277: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_reset.isra.0+0x1b9: unreachable instruction
vmlinux.o: warning: objtool: cfi_amdstd_secsi_read+0x42a: unreachable instruction
vmlinux.o: warning: objtool: do_otp_write+0x11f: unreachable instruction
vmlinux.o: warning: objtool: do_read_secsi_onechip+0x2d6: unreachable instruction
>> vmlinux.o: warning: objtool: cfi_probe_chip.cold+0x0: unreachable instruction
>> vmlinux.o: warning: objtool: do_erase_oneblock.cold+0x0: unreachable instruction
objdump-func vmlinux.o cfi_probe_chip.cold:
0000 000000000005c6d6 <cfi_probe_chip.cold>:
0000 5c6d6: 48 8b 75 b8 mov -0x48(%rbp),%rsi
0004 5c6da: 48 89 ca mov %rcx,%rdx
0007 5c6dd: 48 c7 c7 00 00 00 00 mov $0x0,%rdi 5c6e0: R_X86_64_32S .data+0xa966e0
000e 5c6e4: 48 89 4d d0 mov %rcx,-0x30(%rbp)
0012 5c6e8: e8 00 00 00 00 call 5c6ed <cfi_probe_chip.cold+0x17> 5c6e9: R_X86_64_PLT32 __ubsan_handle_shift_out_of_bounds-0x4
0017 5c6ed: 48 8b 4d d0 mov -0x30(%rbp),%rcx
001b 5c6f1: e9 00 00 00 00 jmp 5c6f6 <cfi_probe_chip.cold+0x20> 5c6f2: R_X86_64_PC32 .text+0x1f6ea3f
0020 5c6f6: 48 89 ca mov %rcx,%rdx
0023 5c6f9: 4c 89 c6 mov %r8,%rsi
0026 5c6fc: 48 c7 c7 00 00 00 00 mov $0x0,%rdi 5c6ff: R_X86_64_32S .data+0xa96720
002d 5c703: 48 89 4d d0 mov %rcx,-0x30(%rbp)
0031 5c707: e8 00 00 00 00 call 5c70c <cfi_probe_chip.cold+0x36> 5c708: R_X86_64_PLT32 __ubsan_handle_shift_out_of_bounds-0x4
0036 5c70c: 48 8b 4d d0 mov -0x30(%rbp),%rcx
003a 5c710: e9 00 00 00 00 jmp 5c715 <cfi_probe_chip.cold+0x3f> 5c711: R_X86_64_PC32 .text+0x1f6e92f
003f 5c715: 48 8b 75 b8 mov -0x48(%rbp),%rsi
0043 5c719: 48 89 ca mov %rcx,%rdx
0046 5c71c: 48 c7 c7 00 00 00 00 mov $0x0,%rdi 5c71f: R_X86_64_32S .data+0xa96760
004d 5c723: 48 89 4d d0 mov %rcx,-0x30(%rbp)
0051 5c727: e8 00 00 00 00 call 5c72c <cfi_probe_chip.cold+0x56> 5c728: R_X86_64_PLT32 __ubsan_handle_shift_out_of_bounds-0x4
0056 5c72c: 48 8b 4d d0 mov -0x30(%rbp),%rcx
005a 5c730: e9 00 00 00 00 jmp 5c735 <cfi_varsize_frob.cold> 5c731: R_X86_64_PC32 .text+0x1f6e8e0
--
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