help: semantic error: no match while resolving probe point module

[Wendy Cheng <s dot wendy dot cheng at gmail dot com>]

Hi,

I have a system (2.6.32-279.el6.x86_64) where
/lib/module/$kversion/kernel/drivers/infinibandel is obsoleted by
/lib/modules/$kversion/updates/drivers/infiniband

After debuginfo rpm was installed, system-tap seemed to be confused by
the driver location. So I manually copied the
/lib/modules/$kversion/updates/drivers/infiniband/ulp/ipoib/ib_ipoib.ko into
/lib/modules/$kversion/kernel/drivers/infiniband/ulp/ipoib directory.

The following simple stap script worked correctly for a while:
 [root@cst-kf5 wendy]# cat ipoib.stap
probe module("*ib_ipoib*").function("*").call
{
        printf ("%d %s -> %s\n", tid(), thread_indent(1), probefunc())
}
probe module("*ib_ipoib*").function("*").return
{
        printf ("%d %s <- %s\n", tid(), thread_indent(-1), probefunc())
}

Then .. after some kmod coding/rebuilt work, kernel crashed. After
reboot, system-tap no longer works:
[root@cst-kf5 wendy]# stap ipoib.stap
semantic error: no match while resolving probe point
module("*ib_ipoib*").function("*").call
semantic error: no match while resolving probe point
module("*ipoib*").function("*").return
Pass 2: analysis failed.  Try again with another '--vp 01' option.

Any clue and help ?

Great Thanks,
Wendy