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[Bug 1926996] Re: qemu-user clone syscall fails
From: |
Launchpad Bug Tracker |
Subject: |
[Bug 1926996] Re: qemu-user clone syscall fails |
Date: |
Fri, 16 Jul 2021 04:17:16 -0000 |
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1926996
Title:
qemu-user clone syscall fails
Status in QEMU:
Expired
Bug description:
qemu-user fails to emulate clone()
(https://linux.die.net/man/2/clone). The architecture doesn't seem to
matter, tho I've mostly been testing aarch64.
Attached is clone_test.c that demonstrates the problem. Running it natively
looks like this:
$ bin/x86_64/clone_test
The variable was 9
clone returned 4177: 0 Success
The variable is now 42
However, running it via qemu looks like:
$ qemu-aarch64-static --version
qemu-aarch64 version 5.2.0 (v5.2.0)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
$ qemu-aarch64-static bin/aarch64/clone_test
The variable was 9
clone returned -1: 22 Invalid argument
The variable is now 9
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