id = 871
title = "qemu-x86_64 don't support unshare(CLONE_NEWUSER)"
state = "opened"
created_at = "2022-02-14T10:04:43.103Z"
closed_at = "n/a"
labels = ["linux-user", "target: i386", "workflow::Triaged"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/871"
host-os = "Ubuntu 20.04"
host-arch = "x86"
qemu-version = "qemu-x86_64 -version"
guest-os = "n/a"
guest-arch = "n/a"
description = """Why qemu-x86_64 call unshare(CLONE_NEWUSER) fail?
```
    fuzzing@ubuntu:~/Desktop/afl/AFLplusplus$ qemu-x86_64 /bin/unshare --user /bin/bash
    unshare: unshare failed: Invalid argument
    fuzzing@ubuntu:~/Desktop/afl/AFLplusplus$ /bin/unshare --user /bin/bash
    nobody@ubuntu:~/Desktop/afl/AFLplusplus$
```"""
reproduce = """1.execute `qemu-x86_64 /bin/unshare --user /bin/bash` ,it will fail <br/>
2.execute `/bin/unshare --user /bin/bash` ,it will ok

How i fix that?"""
additional = "n/a"