[openib-general] RE: [ib_at] oops in ib_at when running kdapltest

[Hal Rosenstock]

On Tue, 2005-06-07 at 11:56, Itamar Rabenstein wrote: 
> attached is the output of /var/log/messages that contain ib_at oops with
> ib_at debug trun on.
> svn rev 2564 (ib + kdapl + at from users/jlentini)
> test is : ./kdapltest -T T -s 11.1.4.43 -D mthca0a -d -t 2 -w 8 -i 20 client
> SR server SR
> i run the test 4-5 times before the oops occur 
> (In order to get the oops your kernel must be compiled with
> CONFIG_DEBUG_PAGEALLOC)

I've done this over 30 times and still not recreated this :-( My kernel
is compiled with CONFIG_DEBUG_PAGEALLOC ever since the last time... The
only difference now is my CM is instrumented which may change the timing
slightly if this is due to a timing window. Out of curiousity, what SM
are you using ?

The sequence appears the same as all the ones which work prior to this.
Also, in looking at resolve_path, I do not see a way for this to occur
as long at the pointer to the path_rec struct is valid other than some
scribbling problem (stack trashed somehow ?).

So, can you redo this with one more change as follows:
In resolve_path right before the call to ib_sa_path_rec_get insert the
line:
	DEBUG("ib_sa_path_rec_get");

I want to rule in or out a possible theory. Thanks.

-- Hal