Ubuntu
mono package

  1. Bug #247782
  2. Comment #2

Comment 2 for bug 247782

Revision history for this message
Michael Casadevall (mcasadevall) wrote : Re: Ubuntu mono patch dont_check_proc_self_exe causes FBFTS in evolution sharp

Here is some more information and related bugs on the issue:

https://bugs.edge.launchpad.net/ubuntu/+source/linux/+bug/22410.

Essentially, readlink() on /proc/self/exe will return the path of the executable that calls it, but on an unionfs based system, it will return the wrong path (/squashfs/usr/bin/mono). THe old patch simply commented out the check on /proc/self/exe, which obviously was a bad idea, and also causes random segfaults all over the place (currently evolution-sharp is known to FTBFS due to this issue, f-spot also FTBFS if its rebuilt after clearing its dependency issues).

THe replacement patch (which I'm now testing) checks the prefix of any path read via the readlink /proc/self/exe function call, and then strips off the bad section of the path as necessary.

As evolution-sharp is known to trigger this bug, my test will involve building it once in a normal chroot jail, and building it again on the liveCD with the replacement mono. It should success both times if mono has properly been fixed.