Harald Fritzsche <Harald.Fritzsche@mpd.de> writes:

Hallo Hackers,

I found (i hope so) the reason for the kbd: sig_sched: invalid ext_preempter in L4-Linux, reported earlier.

In file : linux/arch/l4-i386/lib/task.c in function: start_linux_server_thread() is used the variable l4_threadid_t foo_id uninitialized. I set foo_id to L4_INVALID_ID and the sig_sched disappears. But i don't if this is intended from the authors.

Thanks for reporting this. Since L4/Intel never used the value of 'external preempter' we (at least I) have not seen this 'error'.

Also the null-pointer test gives an error message.

Could you provide some more details? If everything works correctly you should see a complained from the root pager (something like 'Hmm, strange, that shouldn't happen anymore' on a hercules monitor) and a message from the linux server 'mem_init: null pointer dereference detection seems to work'. If you see 'mem_init: null pointer check failed' then something is wrong and the zero page was not flushed correctly. That's something Michael should be interested in. Jean -- I get up each morning, gather my wits. Pick up the paper, read the obits. if I'm not there I know I'm not dead. So I eat a good breakfast and go back to bed. Peete Seeger