Initial upstream workaround submission: https://patchwork.kernel.org/patch/9601819/
** Also affects: linux (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Changed in: linux (Ubuntu Zesty) Status: New => Confirmed ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu Zesty) Importance: Undecided => High -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1689855 Title: perf hangs on QDF 2400 servers (Falkor SoC) Status in linux package in Ubuntu: Confirmed Status in linux source package in Zesty: Confirmed Bug description: [Impact] There's a hardware errata that causes hangs when using PMU counters. It has been assigned errata ID E1029. [Test Case] sudo perf top After a few moments, you should notice hangs, most likely with rcu_sched messages on the console. [Regression Risk] (TBD, one upstream fix is identified) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1689855/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp