Bug in std::thread::spawn causing "failed to spawn thread: Os { code: 22, kind: InvalidInput, message: 'Invalid argument' }"

[chengshuyi]

I tried this code:

std::thread::spawn(move || {
  .....
})

I expected to see this happen: spawn new thread

Instead, this happened:

thread 'main' panicked at /work/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/thread/mod.rs:729:29:
failed to spawn thread: Os { code: 22, kind: InvalidInput, message: "Invalid argument" }

Upon further investigation using strace, it appears that the clone system call is being made with an invalid argument. Specifically, the parent_tid parameter is being passed as a pointer to tid, which seems to be incorrect.

Meta

rustc --version --verbose:

binary: rustc
commit-hash: 30f168ef811aec63124eac677e14699baa9395bd
commit-date: 2025-03-05
host: x86_64-unknown-linux-gnu
release: 1.87.0-nightly
LLVM version: 20.1.0

[bjorn3]

The rust standard library doesn't directly use clone. Rather it uses pthread_spawn from libc. This is either a libc bug or some memory corruption going on somewhere else. Can you post the full code that reproduces this bug and the glibc version version? Also does this reproduce with the latest nightly? Your nightly is 3 months old.