Public bug reported: == SRU Request, Xenial ==
While writing an ftrace smoke test I managed to hang, oops and reboot the kernel when running the same test on the current xenial kernel on amd64. The test works fine on other kernels, so this is specific to Xenial. == Test case == http://kernel.ubuntu.com/git/ubuntu/autotest-client- tests.git/commit/?id=cb1d178ee4cf42cffbf5ec20b9707365aa941f16 Without the fix, the kernel will hang/crash. With the fix the test will run to completion as expected. == Fix == Upstream commit: commit 8329e818f14926a6040df86b2668568bde342ebf Author: Steven Rostedt <[email protected]> Date: Mon May 16 23:00:35 2016 -0400 ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it == Regression Potenial == Slim to zero. ** Affects: linux (Ubuntu) Importance: Medium Assignee: Colin Ian King (colin-king) Status: In Progress ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Colin Ian King (colin-king) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1666647 Title: ftrace on xenial can be hung, cause an oops or reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1666647/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
