| Issue |
120552
|
| Summary |
lld: syntax error in linker script triggers a sef-fault
|
| Labels |
lld
|
| Assignees |
|
| Reporter |
nickclifton
|
I was experimenting with a change to a linker script when I encountered a segmentation fault triggered by a syntax error:
ld.lld: error: kernel.ld:3: ( expected, but got 0
>>> .data : { LONG 0; }
>>> ^
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0. Program arguments: ld.lld -melf_i386 -static -o lld.elf --emit-relocs -Tkernel.ld tst.o
#0 0x00001465ce217b7a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib64/libLLVM.so.19.1+0x217b7a)
#1 0x00001465ce214b24 llvm::sys::RunSignalHandlers() (/lib64/libLLVM.so.19.1+0x214b24)
#2 0x00001465ce2182eb (/lib64/libLLVM.so.19.1+0x2182eb)
#3 0x00001465cda25dd0 __restore_rt (/lib64/libc.so.6+0x19dd0)
#4 0x00001465d61a96a0 (/lib64/liblldELF.so.19.1+0x1a96a0)
#5 0x00001465d61a71e4 (/lib64/liblldELF.so.19.1+0x1a71e4)
#6 0x00001465d618dfc5 lld::elf::readLinkerScript(llvm::MemoryBufferRef) (/lib64/liblldELF.so.19.1+0x18dfc5)
#7 0x00001465d6068ce6 lld::elf::LinkerDriver::createFiles(llvm::opt::InputArgList&) (/lib64/liblldELF.so.19.1+0x68ce6)
#8 0x00001465d605cc73 lld::elf::LinkerDriver::linkerMain(llvm::ArrayRef<char const*>) (/lib64/liblldELF.so.19.1+0x5cc73)
#9 0x00001465d605c0da lld::elf::link(llvm::ArrayRef<char const*>, llvm::raw_ostream&, llvm::raw_ostream&, bool, bool) (/lib64/liblldELF.so.19.1+0x5c0da)
#10 0x00001465d5d22c5e lld::unsafeLldMain(llvm::ArrayRef<char const*>, llvm::raw_ostream&, llvm::raw_ostream&, llvm::ArrayRef<lld::DriverDef>, bool) (/lib64/liblldCommon.so.19.1+0x3c5e)
#11 0x0000556d45ff8937 lld_main(int, char**, llvm::ToolContext const&) (/usr/bin/lld+0x1937)
#12 0x0000556d45ff8f32 main (/usr/bin/lld+0x1f32)
#13 0x00001465cda0f248 __libc_start_call_main (/lib64/libc.so.6+0x3248)
#14 0x00001465cda0f30b __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x330b)
#15 0x0000556d45ff86c5 _start (/usr/bin/lld+0x16c5)
Segmentation fault (core dumped)
This was with LLD 19.1.5 running on Fedora 41.
The full linker script looks like this:
SECTIONS
{
.data : { LONG 0; }
TTT = .;
_LGROUP = .;
. = SIZEOF_HEADERS;
. = ALIGN(0x100);
.text : {
*(TEXT)
. = ALIGN(0x100);
}
}
Obviously I should have written "LONG (0)" instead of "LONG 0", but I figured that you might wish to fix the seg-fault anyway.
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