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Re: Segmentation Fault: Task died at uprobe probepoint
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: Gaurav Dhiman <dimanuec at gmail dot com>
- Cc: systemtap at sourceware dot org
- Date: Mon, 14 Jun 2010 12:56:46 -0400
- Subject: Re: Segmentation Fault: Task died at uprobe probepoint
- References: <AANLkTikqpQaqoGI9okBNOIpwBOP8OQLdIaqmHLkZiAuY@mail.gmail.com>
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