Launchpad has imported 1 comments from the remote bug at https://bugs.freedesktop.org/show_bug.cgi?id=55678.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2012-10-05T20:21:11+00:00 Alexpigna-dev wrote: In file src/xlibi18n/lcConv.c the following linked list head is defined static XlcConverterList conv_list = NULL; Which is then modified by _XlcSetConverter and get_converter in a non thread-safe manner. Inside get_converter the list is reorderder to increase the efficiency of looking up the same element the next time, but this is especially dangerous since a seemingly read-only method is actually modifying the data. Modifying the list in such thread unsafe manner does case the list to become garbled in some workloads and causes infinite loops when the get_converter is invoked. The solution I suggest is to add a mutex or spinlock around accesses to the linked list, I would it myself but I'm not sure about what is the usual mutex implementation for this project. Reply at: https://bugs.launchpad.net/ubuntu/+source/libx11/+bug/1062534/comments/0 ** Changed in: xlibs Status: Unknown => Confirmed ** Changed in: xlibs Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1062534 Title: Type unsafe access to internal linked list To manage notifications about this bug go to: https://bugs.launchpad.net/xlibs/+bug/1062534/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
