kirkwood openrd: random kernel crashes with git kernel

[Russell King - ARM Linux]

On Thu, Oct 01, 2009 at 09:04:18AM +0200, Dieter Kiermaier wrote:
> Once I got a backtrace like:
> ------------[ cut here ]------------
> WARNING: at arch/arm/kernel/process.c:171 cpu_idle+0x74/0xbc()
> Modules linked in:
> [<c002a748>] (unwind_backtrace+0x0/0xd8) from [<c003931c>] (warn_slowpath_common+0x4c/0x68)
> [<c003931c>] (warn_slowpath_common+0x4c/0x68) from [<c0026844>] (cpu_idle+0x74/0xbc)
> [<c0026844>] (cpu_idle+0x74/0xbc) from [<c0008b2c>] (start_kernel+0x22c/0x27c)
> [<c0008b2c>] (start_kernel+0x22c/0x27c) from [<00008034>] (0x8034)
> ---[ end trace fb05d74310f1e273 ]---

This is indicative of something causing interrupts to be disabled in
the cpu idle loop after the pm specific idle loop returns.  That could
be a buggy pm_idle implementation, or, as you seem to have identified,
not using your debugger appears to solve the problem.