[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] /usr/bin/m4: internal error detected
|
From: |
Andreas Schwab |
|
Subject: |
Re: [Qemu-devel] /usr/bin/m4: internal error detected |
|
Date: |
Fri, 01 Dec 2017 13:18:53 +0100 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (gnu/linux) |
On Dez 01 2017, John Paul Adrian Glaubitz <address@hidden> wrote:
> This isn't a bug in m4 or anything architecture-specific, it's a regression
> that was introduced by an upstream change in glibc [1] and mainly affects
> qemu-user which we are using for m68k and sh4 [2].
It's a bug in qemu-linux-user, which ignores CLONE_VFORK, turning vfork
into fork. This breaks the expected semantics of vfork (VM sharing and
blocking the child until exec).
Andreas.
--
Andreas Schwab, address@hidden
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."