g++ programs compiled with -finstrument-functions freezes Ubuntu

[Philip Ashmore]

I tried using ubuntu-bug (I think that's it's name, I'm writing this in Debian) but it gets so far in sending the bug report and then asks me to check the internet connection.

Anyway.

Download in install v3c-1.3.12 from http://sourceforge.net/projects/v3c/
Get treedb using
    git clone git://treedb.git.sourceforge.net/gitroot/treedb/treedb
Then, in the treedb root directory, do
    make git branch=0.2.0 debug check

My machine froze when it tried to run the instrumented programs.
    make git branch=0.2.2 debug check
works fine.

[Kees Cook (kees)]

Please see if you can catch any dmesg errors, etc from the kernel. Thanks!

[Philip Ashmore (contact-philipashmore)]

Er, it freezes Ubuntu, hence no logging. Have you tried to reproduce the behaviour?

[Kees Cook (kees)]

Well, there might have been Oops output or something like that. Can you provide a minimal test case that causes this for you? Doing a full install of v3c isn't something everyone has time to do. :)

[Philip Ashmore (contact-philipashmore)]

Unfortunately the machine hangs without warning.

Fortunately building and installing v3c and treedb from git is a snap.

To reproduce the circumstances of the crash I think running the checks against v3c branch 1.3.12 is a good idea - it may not be a factor.

Here is the complete procedure.

# BEGIN
mkdir tmp
cd tmp
git clone git://v3c.git.sourceforge.net/gitroot/v3c/v3c
cd v3c
make git branch=1.3.12
sudo make -C build/git/branches/1.3.12 prefix=/usr install
cd ..
git clone git://treedb.git.sourceforge.net/gitroot/treedb/treedb
cd treedb
make git branch=0.2.0 debug check # This is where the crash occurs!
# END

If you've managed to reproduce the crash then after you hard-reboot your machine you can uninstall v3c with

cd <the v3c directory>
sudo make -C build/git/branches/1.3.12 prefix=/usr uninstall

The entire procedure will take about 5 minutes (assuming you have a fast internet connection).
V3c has moved on since 1.3.12 so I can't recall, but you may have to manually remove the /usr/include/v3c directory after uninstalling v3c.

Philip

[Matthias Klose (doko)]

please can you reproduce this with 4.8 or 4.9?

[Philip Ashmore (contact-philipashmore)]

Working with latest v3c and treedb with gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) in trusty.

See also bug https://bugs.launchpad.net/ubuntu/+source/gcc-defaults/+bug/692104

I couldn't reproduce the bug as the current compiler is more strict and compilation fails.

Git has also changed so that you need to do a "git checkout $branch" before doing a "git reset --hard" to switch to a remote branch.

Also, v3c versions before 2.5.8-01 (to be released shortly) assumed that the git repository isn't a clone, which is true in my case.

Has anyone tried to reproduce this bug?

[Matthias Klose (doko)]

closing as fix released.