On 12/01/2017 01:18 PM, Andreas Schwab 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).
Yes, I wasn't really arguing that it's a bug in QEMU as Adhemerval had already
explained. The problem was just that apparently resolving the issue in
QEMU isn't trivial as Peter Maydell mentioned in [1].
That's why I was looking for a workaround. However, I have re-tested Florian's
patch and it works for me now, it didn't when I tested it for the first time.
So, we have a workaround for the time being until the bug is resolved in QEMU.
Adrian
[1] https://bugs.launchpad.net/qemu/+bug/1673976
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.''`. John Paul Adrian Glaubitz
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`. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
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