Jose Goncalves wrote:
> New devolpments.
> I have upgraded to 2.6.16.41, applied a patch sent by Frederik that
> removed the changed made in http://lkml.org/lkml/2005/6/23/266 and
> activated some more kernel debug, i.e., CONFIG_KALLSYMS_ALL,
> CONFIG_DEBUG_KERNEL, CONFIG_DETECT_SOFTLOCKUP, CONFIG_DEBUG_SLAB,
> CONFIG_DEBUG_MUTEXES, CONFIG_FRAME_POINTER and CONFIG_FORCED_INLINING
> (thanks to vda for pointing me to the right doc.).
> At first it seemed to work fine, but after some days of continuous
> running I've got another kernel Oops!
> I attach the dmesg output and the assembly dump of serial8250_startup()
> and serial8250_shutdown().
>   

And also the assembly dump of serial_in() were the NULL pointer
dereference happens.

José Gonçalves