[uml-devel] FC4 rootfs - crash

[uml-devel] FC4 rootfs - crash

[Sapan Bhatia]

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Hi,

I'm using UML 2.6.19.2 on a 2.6.19-skas3 host, and observing the following
when I try booting with a root fs based on FC4/glibc- 2.6-20. UML gets stuck
with a 'Warning: unable to open an initial console'. gdb shows that it's
because it gets a stream of infinite segfaults. When I boot off another
rootfs and try to chroot into the one with FC4, it segfaults out. strace
shows that this happens just after libc is ldopened.. at a call to
rt_sigprocmask.

So I tried regressing glibc, and now (with glibc-2.6.3) chroot works, but
UML still gets stuck at the same place when I try to boot.

Sapan

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Re: [uml-devel] FC4 rootfs - crash

[Blaisorblade]

On Tuesday 16 January 2007 14:11, Sapan Bhatia wrote:
> Hi,
>
> I'm using UML 2.6.19.2 on a 2.6.19-skas3 host, and observing the following
> when I try booting with a root fs based on FC4/glibc- 2.6-20. UML gets
> stuck with a 'Warning: unable to open an initial console'. gdb shows that
> it's because it gets a stream of infinite segfaults. When I boot off
> another rootfs and try to chroot into the one with FC4, it segfaults out.
> strace shows that this happens just after libc is ldopened.. at a call to
> rt_sigprocmask.

Which is the other root_fs? Slackware is way stablere than anything else, 
since I guess they are much more conservative when building glibc.

> So I tried regressing glibc, and now (with glibc-2.6.3) chroot works, but
> UML still gets stuck at the same place when I try to boot.

You mean glibc-2.3.6?
Can an older UML version boot fine on that root_fs? No definitive 
incompatibility with FC4 exists that I know of.

However, there is a similar problem with _host_ glibc >= 2.4. Is this your 
case?

> Sapan

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