[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-06-04 Thread Po-Hsu Lin
** Tags removed: verification-needed-cosmic ** Tags added: verification-done-cosmic ** Changed in: ubuntu-kernel-tests Status: In Progress => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-06-04 Thread Launchpad Bug Tracker
This bug was fixed in the package linux - 4.18.0-21.22 --- linux (4.18.0-21.22) cosmic; urgency=medium * linux: 4.18.0-21.22 -proposed tracker (LP: #1829186) * disable a.out support (LP: #1818552) - [Config] Turn off a.out support * ftrace in ubuntu_kernel_selftests hang

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-06-04 Thread Launchpad Bug Tracker
This bug was fixed in the package linux - 4.15.0-51.55 --- linux (4.15.0-51.55) bionic; urgency=medium * linux: 4.15.0-51.55 -proposed tracker (LP: #1829219) * disable a.out support (LP: #1818552) - [Config] Disable a.out support * [UBUNTU] qdio: clear intparm during

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-20 Thread Ubuntu Kernel Bot
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-20 Thread Po-Hsu Lin
** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- 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/1826385 Title: ftrace in ubuntu_kernel_selftests hang

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-16 Thread Ubuntu Kernel Bot
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-13 Thread Khaled El Mously
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Cosmic) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-07 Thread Po-Hsu Lin
https://lists.ubuntu.com/archives/kernel-team/2019-May/100573.html ** Changed in: linux (Ubuntu Bionic) Status: New => In Progress ** Description changed: == Justification == Running the ftrace in ubuntu_kernel_selftests repetitively against x86 Cosmic kernel will cause system hang.

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-07 Thread Po-Hsu Lin
** Description changed: == Justification == Running the ftrace in ubuntu_kernel_selftests repetitively against x86 Cosmic kernel will cause system hang. + When this happens, you won't be able to ssh into this system, and no log + can be found in syslog. + This hang is caused by one of

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-05-07 Thread Po-Hsu Lin
** Description changed: == Justification == Running the ftrace in ubuntu_kernel_selftests repetitively against x86 Cosmic kernel will cause system hang. This hang is caused by one of the sub-test: kprobe/multiple_kprobes Upstream discussion could be found here:

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-30 Thread Po-Hsu Lin
This can be triggered on Cosmic with a OEM kernel built with gcc-8: $ cat /proc/version Linux version 4.15.0-1036-oem (root@rumford) (gcc version 8.2.0 (Ubuntu 8.2.0-7ubuntu1)) #41 SMP Tue Apr 30 10:57:32 UTC 2019 I will see if I can verify this from this point. -- You received this bug

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-30 Thread Po-Hsu Lin
** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- 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/1826385 Title: ftrace in ubuntu_kernel_selftests hang with Cosmic

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-30 Thread Po-Hsu Lin
** Description changed: + == Justification == + Running the ftrace in ubuntu_kernel_selftests repetitively against x86 Cosmic kernel will cause system hang. + + This hang is caused by one of the sub-test: kprobe/multiple_kprobes + + Upstream discussion could be found here: +

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-30 Thread Po-Hsu Lin
Tried to reproduce this on Bionic with ubuntu-bionic source code and ubuntu-cosmic source code, but no luck. I assume this has something to do with the tool chain, as mentioned in the mail thread this will get triggered after gcc upgraded from 7 to 8. Bionic comes with GCC-7 -- You received

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-30 Thread Po-Hsu Lin
** Changed in: linux (Ubuntu Cosmic) Status: New => In Progress ** Changed in: linux (Ubuntu Cosmic) Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: ubuntu-kernel-tests Assignee: (unassigned) => Po-Hsu Lin (cypressyew) ** Changed in: ubuntu-kernel-tests

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-29 Thread Po-Hsu Lin
More tests on a bare-metal and a KVM node with 4.18.0-18 / -17 / -16 / -11 shows that: * This issue can be reproduced on these kernels * Bare metal system tend to pass with the ftrace test on the first run, but it will hang with the second / third attempt if you run it again * KVM nodes tend to

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-26 Thread Po-Hsu Lin
I think this patch can get this issue fixed on Cosmic: https://github.com/torvalds/linux/commit/43a1b0cb4cd6dbfd3cd9c10da663368394d299d8 (found in this thread https://lkml.org/lkml/2018/12/3/1219) Test kernel: http://people.canonical.com/~phlin/kernel/lp-1826385-ftrace-hang/ Cosmic KVM and

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-26 Thread Po-Hsu Lin
Checked again on the KVM that I used yesterday for this: 1. ftrace test finished as expected with upstream tree https://pastebin.ubuntu.com/p/QmQfspFFR5/ 2. ubuntu-cosmic master branch with tip at 2e8c30c5 (Ubuntu-4.18.0-18.19) will hang https://pastebin.ubuntu.com/p/69gHfNpMRF/ 3.

[Kernel-packages] [Bug 1826385] Re: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel

2019-04-25 Thread Tyler Hicks
I was able to verify that deleting ftrace/test.d/kprobe/multiple_kprobes.tc allows the remaining ftrace selftests (from the cosmic kernel tree) to pass. That suggests that the "Register/unregister many kprobe events" (multiple_kprobes.tc) test is the test that puts the system into a bad state. --