Loading symbols for the Linux user process
Hello
I'm trying to debug an application multi-threaded running inside a virtual machine, both in live replay mode. The virtual machine is running RHEL 5, kernel 2.6.18 - 164-2-1. I tried the gdb remote running on the host computer for this virtual machine (also a RHEL 5 machine) as well as of a box of Ubuntu 8.04. The results in both cases are identical. I am running VMWare Workstation 6.5.3.
I can attach it to the virtual machine and, after issuing the command "linuxoffsets" monitor", see all the processes. I can switch between them using the command 'thread '. However, I can't see backtrace. I suspect that it is because the symbols are not loaded correctly.
If I try to debug a live application, gdb tries not to load the symbols at all, no matter what I do.
If I try to debug a session of proofreading, gdb tries to load the symbols after that I run the command 'remote target. However, it seems for them on the machine running gdb, and not on the host being debugged. I tried to copy all libraries to the machine where gdb is running and setting the solib-search-path and solib-absolute-prefix options. If I do this, gdb claims load all symbols libraries successfully, but the batteries are largely deformed. If I try to set breakpoints, they never get triggered.
I was wondering what is the correct procedure to make it work. The user manual has instructions for some of this, but they seem to be for Windows. GDB and Linux are not mentioned at all.
Thank you
Ray
Hi Ray,
6.5.3 workstation does not support replay debugging gdb. Do us, however, publish a new Workstation Release Candidate, that supports Linux gdb debugging replay. You can download from http://communities.vmware.com/community/beta/workstation?view=overview. The gdb user manual debugging replay is http://communities.vmware.com/docs/DOC-10714. Let us know how it goes.
Thank you
Eric
Tags: VMware
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