kernels oops - bug report

[Axel <axel azerty laposte net>]

Hello
I d like to report a kernel oops, but I don't know how to catch the 
kernel log.

After an upgrade to kernel 2.6.19-1.2911, the system crashes at boot. I 
didn't had this problem with 2.6.19-1.2895 version. I didn't found such 
a bug in the bugzilla.

Is it possible to save the stacktrace in order to fill a bug report ? 
How can I do that ?

Thanks in advance.
Regards.