[BUG] - crashing with multiple connections

[malteki]

Description

When I have multiple SmbFs instances in parallel (rayon, tokio, std::thread, ...) the application crashes with varying messages.
Example error message (I chose the one with the most info, but sometimes it shows only the last line):

talloc: access after free error - first free may be at ../../source3/param/loadparm.c:441
talloc: access after free error - first free may be at ../../source3/param/loadparm.c:441
Bad talloc magic value - unknown value
Bad talloc magic value - access after free
fish: Job 1, 'cargo r -r --bin connect_two' terminated by signal SIGABRT (Abort)

Steps to reproduce

fn main() {
    thread::spawn(|| loop {
        let mut client = SmbFs::try_new(
            SmbCredentials::default()
                .server("smb://192.168.0.250")
                .share("/")
                .username("user")
                .password("wrong-password"),
            SmbOptions::default()
                .case_sensitive(true)
                .one_share_per_server(true),
        )
        .unwrap();

        client.connect();
        client.disconnect();
    });

    loop {
        let mut client = SmbFs::try_new(
            SmbCredentials::default()
                .server("smb://192.168.0.250")
                .share("/")
                .username("user")
                .password("wrong-password"),
            SmbOptions::default()
                .case_sensitive(true)
                .one_share_per_server(true),
        )
        .unwrap();

        client.connect();
        client.disconnect();
    }
}

Environment

• OS: (Linux) Fedora 41
• Architecture x86_64
• Rust version:
  rustc 1.84.1 (e71f9a9a9 2025-01-27)
  binary: rustc
  commit-hash: e71f9a9a98b0faf423844bf0ba7438f29dc27d58
  commit-date: 2025-01-27
  host: x86_64-unknown-linux-gnu
  release: 1.84.1
  LLVM version: 19.1.5
• remotefs version: "0.3"

[malteki]

whoa I just discovered that this crashes as well:

use remotefs::RemoteFs;
use remotefs_smb::{SmbCredentials, SmbFs, SmbOptions};

fn main() {
    loop {
        let mut client = SmbFs::try_new(
            SmbCredentials::default()
                .server("smb://192.168.0.250")
                .share("/")
                .username("user")
                .password("wrong-password"),
            SmbOptions::default()
                .case_sensitive(true)
                .one_share_per_server(true),
        )
        .unwrap();

        client.connect().unwrap();
        client.disconnect().unwrap();
    }
}

[malteki]

This seems to be an issue in pavao veeso/pavao#17