Oopses or hangs at system start revisited

From: Amon Ott <ao@rsbac.org>
Subject: Oopses or hangs at system start revisited
Date: Tue, 13 Mar 2001 15:24:29 +0100

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Hello again!

As far as I could find out the kernel stack of the init process is simply
overrun when this happens. I could further reduce the stack space needed for
RSBAC init and successfully boot an SMP kernel with RSBAC, raid and devfs
compiled in.

Still, the real problem is the too small kernel stack space of 8K. I might try
to move part of RSBAC init into the rsbacd thread. The big disadvantage is that
it is not initialized at a fixed time during boot, and in worst case it might
not work at all.

All of you who noticed hangs or panics, could you please activate SysRq. When
the system stops, please press SysRq-t and look at the free stack space of the
first entry (swapper). I had values of 32 or 40 bytes here, what is hardly
sufficient to call a function with parameters or local variables.

After looking into devfs and raid probs, I will make a pre6 package for you to
test.

Amon.
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