Re: initramfs /init freeze

[Kristoffer Ericson <kristoffer.ericson@gmail.com>]

On Mon, 28 Apr 2008 21:04:49 +0200
"Roni Feldman" <roni.feldman+lkml@gmail.com> wrote:

> Hello everyone,
> 
> I'm experiencing odd behavior on an SH4 setup: I have an embedded
> initramfs in the kernel image.
> The kernel boots fine but the sequence freezes after
> run_init_process("/init") is executed.
> 
> I say "freeze" because I tried code that only does "return 0;" and I
> even wrote an init.s with
> a _start function that jmp's to address 0 (and was supposed to cause
> an exception, but nothing
> appeared in ttySC1, not even a panic for the exit of the init process).
> 
> All the printk()'s are visible, and the console handover from sercon0
> to ttySC1 seems to work
> fine (I have no trouble doing printk's before the call to kernel_execve).
> 
> I also tried both static and dynamic linking when I wrote the empty main().

I believe the dynamic linking issue was in pre glibc 2.3.4 (atleast on SH3) so
shouldn't be an issue atm.

> 
> Busybox as a shell and an /init shell script seems to suffer from the
> same symptoms.
> 
> My setup:
> cpu: SH7751R LE configuration
> kernel: 2.6.25-rc8
> gcc: Gentoo 4.1.2 p1.0.2 with glibc 2.7
> 
> I started to suspect my too-new glibc, so now I'm struggling with
> crossdev to compile a uclibc
> toolchain.

I know glibc 2.3.x / 2.4.x / 2.5.x works well, but never tried 2.7. Usually though its gcc
thats causing the issues. But you should step back and build it with older gcc/glibc just to make sure.

For reference I usually use gcc 3.4.5 & glibc 2.3.6 for kernel builds.

> 
> Do you guys have any tips for me?
> 
> Best regards,
> Roni
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-- 
Kristoffer Ericson <Kristoffer.Ericson@Gmail.com>