[Kernel-packages] [Bug 1396654] Re: C++ demangling support missing from perf

Hmm, apparently /usr/bin/perf is only a wrapper script that runs the "right" version of the perf executable for the current kernel. But the perf executable (typically inside /usr/lib/linux-tools-VERSION) is part of the "linux-tools-VERSION" package. So if I do: $ sudo apt install linux-tools-4.15

[Kernel-packages] [Bug 1396654] Re: C++ demangling support missing from perf

I've installed linux-tools-common 4.15.0-47.50 from bionic-proposed and checked that the new /usr/bin/perf binary still doesn't demangle C++ symbols (even when "perf report --demangle" is passed explicitly). ** Tags removed: verification-needed-bionic ** Tags added: verification-failed-bionic --

[Kernel-packages] [Bug 1396654] Re: C++ demangling support missing from perf

Note that `perf` can crash when demangling. The (trivial) patch shown below fixes the issue for me: http://lkml.iu.edu/hypermail/linux/kernel/1810.2/02663.html Related libbfd issue for incorrect demangling: https://sourceware.org/bugzilla/show_bug.cgi?id=23715 ** Bug watch added: Sourceware.or

[Kernel-packages] [Bug 1396654] Re: C++ demangling support missing from perf

As #18 pointed out, this still affects 18.04. Could the fix be ported there? -- 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/1396654 Title: C++ demangling support missing from perf Stat

[Kernel-packages] [Bug 1690085] Re: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks

This bug still occurs for me with 4.15.0-32-generic (Ubuntu 18.04.1) if I don't disable C6 states. -- 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/1690085 Title: Ryzen 1800X freeze - rcu_

[Kernel-packages] [Bug 1690085] Re: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks

According at least to http://blog.programster.org/stabilizing- ubuntu-16-04-on-ryzen, 18.04 is supposed to be ok. I haven't upgraded yet myself. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/b

[Kernel-packages] [Bug 1492764] Re: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)

I got this issue after trying to install the nvidia-352 driver on my laptop (an optimus setup with both an Intel iGPU and a NVidia GPU). I then uninstalled the NVidia driver, but it still doesn't fix the problem, which is mysterious. -- You received this bug notification because you are a membe