Fix will land in Linux 4.4 Ubuntu Xenial automatically, commit c6ff5268293ef98e48a99597e765ffc417e39fa5
Wily SRU submitted to kernel team mailing list, https://lists.ubuntu.com/archives/kernel-team/2015-December/067287.html ** Description changed: [SRU Justification][Wily] + [Xenial] While stress testing with the stress-ng procfs stressor I hit a walker list bug. This has been recently fixed by Herbert Xu in commit: The commit ba7c95ea3870fe7b847466d39a049ab6f156aa2c ("rhashtable: Fix sleeping inside RCU critical section in walk_stop") introduced a new spinlock for the walker list. However, it did not convert all existing users of the list over to the new spin lock. Some continued to use the old mutex for this purpose. This obviously led to corruption of the list. [Fix] - See: http://marc.info/?l=linux-netdev&m=145027458131396&w=2 - Probably will wait until this officially lands in 4.4 or 4.5. + Clean upstream cherry pick, commit c6ff5268293ef98e48a99597e765ffc417e39fa5 + Will land in Xenial automatically (4.4) + [Testcase] Run multiple instances of the attached code on a multicore system. Alternatively, run stress-ng --procfs 0 on a multi-core system Fix will stop the above code corrupting the list and crashing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1526811 Title: SRU: walker list corruption while being intensively stressed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526811/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
