Segmentation Fault: Task died at uprobe probepoint

[Frank Ch. Eigler]

Gaurav Dhiman <dimanuec@gmail.com> writes:

> [...]
> I have recently installed SystemTap on my Ubuntu 9.04 based system. I
> have Linux kernel 2.6.29.1 with utrace support [...]

Great.

> [...]
> However, when i actually run uprobe-test, although both the probes
> fire successfully, the task generates a segmentation fault and dies on
> the 'test_func' probe. I see the following message on doing dmesg:
> [ 1709.650827] Task died at uprobe probepoint:  pid/tgid = 3934/3934,
> probepoint = 0x400517

Almost certainly it's a uprobes or utrace or systemtap bug, rather
than something you might have done wrong.  Can you collect more
information, such as systemtap git version, stap -vvvt -DDEBUG_UPROBES
traces, disassembly of your probe-target executable?

- FChE