Hi all,I was told by the friendly forum moderators that it's probably best if I post my findings here so it reaches the right people.
I was experiencing a crash in boinc that, judging by the stack trace, looks quite like the one in http://boinc.berkeley.edu/trac/ticket/1108.
I dug around a bit with gdb and found that the problem in in the dir_size() function in lib/filesys.cpp is which is rather naive: it blindly follows symlinks and also assumes that any subpath it encounters fits in 255 bytes. The yoyo@home project has recently started to provide their muon subproject also on linux hosts, with the help of wine. Now there is a .wine configuration directory in my boinc directory that contains e.g. this symlink:
lrwxrwxrwx 1 boinc boinc 14 May 11 12:22
/var/lib/boinc/.wine/dosdevices/c:/users/boinc/My Documents -> /var/lib/boinc
This is essentially causes an endless recursion in dir_size, that is
quickly ended ;) by overflowing the 256 bytes of the buffer.
After removing the .wine directory boinc is running fine again, and I think I can change the WINEPREFIX for boinc in the startup scripts (or just disable muon) as a workaround, but I hope the above infos can help in reproducing/ fixing the issue in a future boinc version.
Speaking of versions: I'm using boinc 6.10.58 on gentoo-linux (amd64).
Regards,
Andy
--
Lubarsky's Law of Cybernetic Entomology:
There's always one more bug.
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