sd-boot/sd-stub fails to build with clang-18's lld due to overlapping sections #31637
Description
Spotted in #31633, but can be easily reproduced on the latest Fedora Rawhide as well:
$ podman run --pull always -it --rm fedora:rawhide
# dnf install -y git-core dnf-plugins-core lld
# dnf builddep -y systemd
# git clone https://github.com/systemd/systemd --depth=1
# cd systemd
# CC=clang CXX=clang++ CC_LD=lld CXX_LD=lld meson setup build -Dbootloader=enabled
# ninja -C build systemd-boot
ninja: Entering directory `build'
[37/38] Generating src/boot/efi/linuxx64.efi.stub with a custom command
FAILED: src/boot/efi/linuxx64.efi.stub
/systemd/tools/elf2efi.py --version-major=256 --version-minor=0 --efi-major=1 --efi-minor=1 --subsystem=10 --minimum-sections=15 --copy-sections=.sbat,.sdmagic,.osrel src/boot/efi/linuxx64.elf.stub src/boot/efi/linuxx64.efi.stub
Traceback (most recent call last):
File "/systemd/tools/elf2efi.py", line 698, in <module>
main()
File "/systemd/tools/elf2efi.py", line 694, in main
elf2efi(parser.parse_args())
File "/systemd/tools/elf2efi.py", line 599, in elf2efi
sections = convert_sections(elf, opt)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/systemd/tools/elf2efi.py", line 330, in convert_sections
raise RuntimeError("Overlapping PE sections.")
RuntimeError: Overlapping PE sections.
[38/38] Generating src/boot/efi/systemd-bootx64.efi with a custom command
FAILED: src/boot/efi/systemd-bootx64.efi
/systemd/tools/elf2efi.py --version-major=256 --version-minor=0 --efi-major=1 --efi-minor=1 --subsystem=10 --minimum-sections=0 --copy-sections=.sbat,.sdmagic,.osrel src/boot/efi/systemd-bootx64.elf src/boot/efi/systemd-bootx64.efi
Traceback (most recent call last):
File "/systemd/tools/elf2efi.py", line 698, in <module>
main()
File "/systemd/tools/elf2efi.py", line 694, in main
elf2efi(parser.parse_args())
File "/systemd/tools/elf2efi.py", line 599, in elf2efi
sections = convert_sections(elf, opt)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/systemd/tools/elf2efi.py", line 330, in convert_sections
raise RuntimeError("Overlapping PE sections.")
RuntimeError: Overlapping PE sections.
ninja: build stopped: subcommand failed.
# readelf -lS build/src/boot/efi/systemd-bootx64.elf
There are 31 section headers, starting at offset 0x5a0d0:
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .note.gnu.bu[...] NOTE 0000000000000238 00000238
0000000000000018 0000000000000000 A 0 0 4
[ 2] .dynsym DYNSYM 0000000000000250 00000250
0000000000000018 0000000000000018 A 4 1 8
[ 3] .gnu.hash GNU_HASH 0000000000000268 00000268
000000000000001c 0000000000000000 A 2 0 8
[ 4] .dynstr STRTAB 0000000000000284 00000284
0000000000000001 0000000000000000 A 0 0 1
[ 5] .rela.dyn RELA 0000000000000288 00000288
0000000000000618 0000000000000018 A 2 0 8
[ 6] .rodata PROGBITS 00000000000008a0 000008a0
0000000000003fe8 0000000000000000 AMS 0 0 16
[ 7] .text PROGBITS 0000000000005000 00005000
00000000000221e1 0000000000000000 AX 0 0 16
[ 8] .data.rel.ro PROGBITS 0000000000028000 00028000
0000000000000300 0000000000000000 WA 0 0 16
[ 9] .dynamic DYNAMIC 0000000000028300 00028300
00000000000000c0 0000000000000010 WA 4 0 8
[10] .got PROGBITS 00000000000283c0 000283c0
0000000000000000 0000000000000000 WA 0 0 8
[11] .relro_padding NOBITS 00000000000283c0 000283c0
0000000000000c40 0000000000000000 WA 0 0 1
[12] .data PROGBITS 00000000000293c0 000283c0
0000000000000024 0000000000000000 WA 0 0 16
[13] .bss NOBITS 00000000000293e8 000283e4
0000000000000070 0000000000000000 WA 0 0 8
[14] .sdmagic PROGBITS 0000000000000000 000283e4
0000000000000036 0000000000000000 S 0 0 1
[15] .osrel PROGBITS 0000000000000000 0002841a
0000000000000055 0000000000000000 S 0 0 1
[16] .sbat PROGBITS 0000000000000000 0002846f
00000000000000ee 0000000000000000 S 0 0 1
[17] .debug_loclists PROGBITS 0000000000000000 0002855d
0000000000000033 0000000000000000 0 0 1
[18] .debug_abbrev PROGBITS 0000000000000000 00028590
0000000000002074 0000000000000000 0 0 1
[19] .debug_info PROGBITS 0000000000000000 0002a604
000000000000f910 0000000000000000 0 0 1
[20] .debug_rnglists PROGBITS 0000000000000000 00039f14
00000000000000c4 0000000000000000 0 0 1
[21] .debug_str_o[...] PROGBITS 0000000000000000 00039fd8
000000000000315c 0000000000000000 0 0 1
[22] .debug_str PROGBITS 0000000000000000 0003d134
000000000000532e 0000000000000001 MS 0 0 1
[23] .debug_addr PROGBITS 0000000000000000 00042462
0000000000002c10 0000000000000000 0 0 1
[24] .comment PROGBITS 0000000000000000 00045072
0000000000000044 0000000000000001 MS 0 0 1
[25] .debug_frame PROGBITS 0000000000000000 000450b8
0000000000003aa0 0000000000000000 0 0 8
[26] .debug_line PROGBITS 0000000000000000 00048b58
000000000000d121 0000000000000000 0 0 1
[27] .debug_line_str PROGBITS 0000000000000000 00055c79
00000000000004d3 0000000000000001 MS 0 0 1
[28] .symtab SYMTAB 0000000000000000 00056150
00000000000025e0 0000000000000018 30 404 8
[29] .shstrtab STRTAB 0000000000000000 00058730
0000000000000141 0000000000000000 0 0 1
[30] .strtab STRTAB 0000000000000000 00058871
0000000000001858 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
D (mbind), l (large), p (processor specific)
Elf file type is DYN (Position-Independent Executable file)
Entry point 0x5000
There are 9 program headers, starting at offset 64
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
PHDR 0x0000000000000040 0x0000000000000040 0x0000000000000040
0x00000000000001f8 0x00000000000001f8 R 0x8
LOAD 0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000004888 0x0000000000004888 R 0x1000
LOAD 0x0000000000005000 0x0000000000005000 0x0000000000005000
0x00000000000221e1 0x00000000000221e1 R E 0x1000
LOAD 0x0000000000028000 0x0000000000028000 0x0000000000028000
0x00000000000003c0 0x0000000000001000 RW 0x1000
LOAD 0x00000000000283c0 0x00000000000293c0 0x00000000000293c0
0x0000000000000024 0x0000000000000098 RW 0x1000
DYNAMIC 0x0000000000028300 0x0000000000028300 0x0000000000028300
0x00000000000000c0 0x00000000000000c0 RW 0x8
GNU_RELRO 0x0000000000028000 0x0000000000028000 0x0000000000028000
0x00000000000003c0 0x0000000000001000 R 0x1
GNU_STACK 0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 RW 0x0
NOTE 0x0000000000000238 0x0000000000000238 0x0000000000000238
0x0000000000000018 0x0000000000000018 R 0x4
Section to Segment mapping:
Segment Sections...
00
01 .note.gnu.build-id .dynsym .gnu.hash .dynstr .rela.dyn .rodata
02 .text
03 .data.rel.ro .dynamic .relro_padding
04 .data .bss
05 .dynamic
06 .data.rel.ro .dynamic .relro_padding
07
08 .note.gnu.build-id