Segmentation fault in async recursion

[dullbananas]

To reproduce:

use std::future::Future;

#[inline(never)]
async fn recurse(n: usize) {
    let x = [77u8; 70000];
    if n != 0 {
        std::future::poll_fn(move |cx| {
            stacker::maybe_grow(140 * 1024, 8 * 1024, move || {
                Box::pin(recurse(n - 1)).as_mut().poll(cx)
            })
        })
        .await;
    }
    #[allow(dropping_copy_types)]
    drop(x);
}

#[test]
fn foof() {
    futures_lite::future::block_on(recurse(10000))
}

Error message:

process didn't exit successfully: `/home/dullbananas/Dropbox/stacker/target/debug/deps/segfault-6753b3a3d075b2b5 foof --exact --show-output` (signal: 11, SIGSEGV: invalid memory reference)

cargo 1.86.0 (adf9b6ad1 2025-02-28)

Linux 6.14.5-300.t2.fc42.x86_64