| Issue |
137779
|
| Summary |
[lld] LLD Linker Deadlock
|
| Labels |
lld
|
| Assignees |
|
| Reporter |
zhangtianhao6
|
The link is suspended when the CMake testCCompiler is tested.
The call stack is as follows:
```
(gdb) bt
#0 0x00007fe103fb6376 in pthread_cond_wait@@GLIBC_2.3.2 () from target:/lib/x86_64-linux-gnu/libpthread.so.0
#1 0x00007fe103c3fe30 in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#2 0x0000558a6bc003fb in llvm::parallelFor(unsigned long, unsigned long, llvm::function_ref<void (unsigned long)>) ()
#3 0x0000558a69dc70f8 in void lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::support::endianness)1, true> >(unsigned char*) ()
#4 0x0000558a69e64216 in void lld::elf::writeResult<llvm::object::ELFType<(llvm::support::endianness)1, true> >() ()
#5 0x0000558a69d32e2c in lld::elf::LinkerDriver::link(llvm::opt::InputArgList&) ()
#6 0x0000558a69d1fd93 in lld::elf::LinkerDriver::linkerMain(llvm::ArrayRef<char const*>) ()
#7 0x0000558a69d1e614 in lld::elf::link(llvm::ArrayRef<char const*>, llvm::raw_ostream&, llvm::raw_ostream&, bool, bool) ()
#8 0x0000558a69bb4b9c in ?? ()
#9 0x0000558a69bb4270 in main ()
```
link option
```
ld.lld --sysroot=/xx/bin/../sysroot -pie -EL -z relro --hash-style=gnu --eh-frame-hdr -m aarch64linux -dynamic-linker /lib/ld-linux-aarch64.so.1 -o cmTC_26a76 /xx/bin/../sysroot/usr/lib/../lib64/Scrt1.o /xx/bin/../sysroot/usr/lib/../lib64/crti.o /xx/lib64/clang/15.0.4/lib/linux/clang_rt.crtbegin-aarch64.o -L/xx/bin/../sysroot/usr/lib/../lib64 -L/xx/bin/../sysroot/usr/lib CMakeFiles/cmTC_26a76.dir/testCCompiler.c.o /xx/common/lib64/clang/15.0.4/lib/linux/libclang_rt.builtins-aarch64.a -lc /xx/lib64/clang/15.0.4/lib/linux/libclang_rt.builtins-aarch64.a /xx/lib64/clang/15.0.4/lib/linux/clang_rt.crtend-aarch64.o /xx/bin/../sysroot/usr/lib/../lib64/crtn.o
```
What kind of scenarios will cause the linker to freeze?
![]()
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