Kernel hang with latest snapshot

[Li Guanglei]

David Boreham wrote:
> 
>> Sorry, I didn't see your reply when I was sending this out. I will 
>> take a look at iosyscall.open.entry, and will check the remaining 
>> codes of potential invalid pointer access. Thanks.
> 
> I see crashes with every io syscall I've tried. It would take quite a 
> while to
> try every one (need to reboot every time). open, read, write, close for 
> sure crash for me.
> 
> 
   :(  I tried to probe using addevent.iosyscall and they seems well 
for me. My testing environment:
   IBM T43 thinkpad with Pentium-M 2.0
   Fedora Core5 updated to the latest
   gcc 4.1.1 20060525
   elfutils 0.124-0.1, rpm packages are from Red Hat ftp server
   latest SystemTap
   running command: stap -e "probe addevent.iosyscall {}" -bMv

   You said almost every io syscall will crash the system, but I am 
sure it's not LKET problem. It should be some more low level problem, 
like runtime and kprobes. Could you tell me a little more about your 
testing environment, and more important, the workload you imposed when 
probing using LKET, so that I can try to reproduce the problem. One 
reason I am thinking my system didn't crash may be that my workload is 
not big enough and didn't get the potential problem exposed. Thanks

- Guanglei