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[Bug kprobes/2387] system crash on ppc64/2.6.15.4


------- Additional Comments From zanussi at us dot ibm dot com  2006-03-01 16:56 -------
(In reply to comment #5)
> (In reply to comment #4)
> > If you are seen problem even when not using SystemTap the this is probably
> > something outside of SystemTap.  I suggest following this up on the linux-kernel
> > and linuxppc64-dev mailing list to see if the problems is located in the kernel.
> > 
> > We should mark this bug as rejected until its proven that it is a SystemTap
> problem.
> 
> the error : end_request: I/O error, dev sda, sector 17445 ...
> will happen without running systemtap. It will occur after I copied something
> into that partition. But I am not sure if it is the reason of causing kernel
> panic when running systemtap.
> 
> The error:
> Unable to handle kernel paging request for data at address
> will happed when running stap with -b option.
> But I agree with Jose that it may not be a systemtap bug, because systemtap
> could work quite well on the redhat shipped kernels(2.6.9-30.EL, 2.6.9-27.EL).
> 
> It should not be a hardware failure because I tried it on different machines,
> and even after reformat the partition. all of them have the same error.
> 
> The 2.6.15 kernel has some changes about power arch(move ppc64 to powerpc
> directory), and the relayfs diffs a lot from RH shipped kernel. I tried not to
> compile relayfs in 2.6.15* and want systemtap compile it, but failed. the
> relayfs shipped with systemtap can't be compiled. some function signatures has
> changed, and if I have time I'll try to replace relayfs.
> 
> 
> 
> 

To get systemtap to use the relayfs in the 2.6.15 kernel, try putting #define
RELAYFS_VERSION_GE_4 at the top of src/runtime/transport/relayfs.h.

Tom

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2387

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