[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This bug does not exist any more. Sorry for the delayed response. I'll mark it as Fix Released. Thanks for the time on this. ** Changed in: linux (Ubuntu Saucy) Status: Incomplete = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
It's been a while since this bug was updated. I'll mark it as incomplete for now. If the bug is fixed, please change the status to Fix Released. If the bug still exists, please change the status to Confirmed. ** Changed in: linux (Ubuntu Saucy) Status: In Progress = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This has not occurred since 3.10.0.2. The jobs have not run much after this kernel due to some other bug 1197484. Still watching. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This bug looks alot like bug 1197078 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The utah bug that was blocking the testing of this test kernel is now fixed, but I am unable to reproduce this issue with the new images containing 3.10.0-2 kernel. I could watch for this bug a couple of more runs with new images and give the update here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Utah bug 1194533 is blocking the testing of this bug. Have been trying to bypass this utah bug to test this kernel with not much of success. Will update the result once I am able to do it. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I built the next test kernel, up to the following commit: bd709bd027a394bce911a0cd60ee9cbdde49361b The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315 Can you test that kernel and report back if it has the bug or not. I will build the next test kernel based on your test results. Thanks in advance -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This test kernel also does not exhibit the bug. thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Also affects: linux (Ubuntu Saucy) Importance: Medium Assignee: Joseph Salisbury (jsalisbury) Status: In Progress ** Tags removed: kernel-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The test kernel given in #27 does not exhibit the bug. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I built the next test kernel, up to the following commit: 1caa590075ddef41950c46123e80cd6a64505218 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315 Can you test that kernel and report back if it has the bug or not. I will build the next test kernel based on your test results. Thanks in advance -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Tested the kernels from v3.9-rc1 up until v3.9-rc7. The bug is not present up until v3.9-rc5-raring and started appearing on v3.9-rc6-raring. v3.9-rc1-raring - No bug v3.9-rc2-raring - No bug v3.9-rc3-raring - No bug v3.9-rc4-raring - No bug v3.9-rc5-raring - No bug v3.9-rc6-raring - Bug exists v3.9-rc7-raring - Bug exists -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This is great info. Thanks, Parameswaran. I'll start a bisect between v3.9-rc5 and v3.9-rc6 and post a test kernel shortly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I started a kernel bisect between v3.9-rc5 final and v3.9-rc6. The kernel bisect will require testing of about 7 test kernels. I built the first test kernel, up to the following commit: 17eb3d8fbe4c573426fc99946040305e79c07803 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315 Can you test that kernel and report back if it has the bug or not. I will build the next test kernel based on your test results. Thanks in advance -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This test kernel contains the bug. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I built the next test kernel, up to the following commit: fefcdbe4accadc7b9fac67066762d11f0e36d173 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315 Can you test that kernel and report back if it has the bug or not. I will build the next test kernel based on your test results. Thanks in advance -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Tags removed: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The bug is present in all the above three versions, v3.9-rc8, v3.9 and v3.9.1 from the mainline. I also tested with v3.8.13.2-raring from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.13.2-raring/ and the bug is NOT present there. Hope this helps. Please feel free to ask any version you want tested. This is making a couple of our daily smoke tests failing, so helping you fix this would in fact help us. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Thanks for testing, Parameswaran. I don't see in previous comments that we confirmed the bug existed in v3.9-rc1. The link was missing at one point, but it is now available: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc1-raring/ Can you test v3.9-rc1, to confirm the bisect I started in comment #14 is the right good and bad commits? If v3.9-rc1 does not have the bug, we will want to test some of the newer release candidates until we find the first version that exhibits the bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Can you test the following kernels, since this issue only happens with 3.9.0-1 and onwards: v3.9-rc8: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc8-raring/ v3.9: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-raring/ v3.9.1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.1-saucy/ You don't have to test every kernel, just up until the kernel that first has this bug. We need to identify the first kernel that has the bug and the last kernel that did not. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
On i386 images, the bug is not occurring since 3.9.0-5. i.e. the issue does not occur with kernel version 3.9.0-5 and 3.9.0-6 kernels on i386 images. On amd64 images, although with 3.9.0-5 there were a couple of instances when the issue did not occur during smoke tests, the consecutive runs show that the bug is in fact still present even with 3.9.0-5 and 3.9.0-6. Sorry for my hasty claim on comment #15. So basically on i386 images the bug is not present from 3.9.0-5 onwards but on amd64 images it continues to exist even with kernels 3.9.0-5 and 3.9.0-6 With mainline v3.10.0-031000rc6-generic the bug is still present on amd64 images. (but displays different message in dmesg as given below) unregister_netdevice: waiting for h1-eth0 to become free. Usage count = 1 unregister_netdevice: waiting for h2-eth0 to become free. Usage count = 1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
This bug is appearing again with 3.9.0-6-generic #13 on an amd64 installation of 20130616. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Attachment added: dmesg_3.9.0-6-generic_13 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3705449/+files/dmesg_3.9.0-6-generic_13 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Can you confirm the issue does not exist in 3.9.0-5-generic? If that is the case, it will be faster to bisect between 3.9.0-5-generic and 3.9.0-6-generic Also, v3.10-rc6[0] is now available. Saucy will be rebased to v3.10 so, it would be good to know if the bug still exists in mainline. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-rc6-saucy/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Sorry for the late response, was afk. The issue is not occurring with this kernel, 3.8.0-030800-generic. Additionally, the issue does not occur with the latest kernel version in the saucy server images too. (3.9.0-5-generic). Thanks for your time on this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I'll start a kernel bisect now. Can you also test v3.10-rc4 to see if this issue still exists in Mainline: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-rc4-saucy/ ** Tags added: kernel-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I'm also going to build a test kernel with the following commits reverted: d2ed27 net: disallow drivers with buggy VLAN accel to register_netdevice() 948b33 net: init perm_addr in register_netdevice() ** Changed in: linux (Ubuntu) Assignee: (unassigned) = Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Status: Confirmed = In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The issue is still present in v3.10-rc4 as well. ** Attachment added: dmesg_3.10.0-031000rc4 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3695407/+files/dmesg_3.10.0-031000rc4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I built a test kernel with the following commits reverted: d2ed27 net: disallow drivers with buggy VLAN accel to register_netdevice() 948b33 net: init perm_addr in register_netdevice() The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315/ Please install both these .debs: linux-image-3.9.0-3-generic_3.9.0-3.8~lp1181315v1_amd64.deb linux-image-extra-3.9.0-3-generic_3.9.0-3.8~lp1181315v1_amd64.deb It would be great if you can test this kernel and report back if it exhibits the bug or not. If the bug still exists with this kernel, I'll continue a bisect. Thanks in advance. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The bug still exists in the test kernel. (3.9.0-3-generic #8~lp1181315v1) ** Attachment added: dmesg_3.9.0-3-generic-test-kernel https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3695437/+files/dmesg_3.9.0-3-generic-test-kernel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I started a kernel bisect between v3.8 final and v3.9-rc1. The kernel bisect will require testing of about 7-10 test kernels. I built the first test kernel, up to the following commit: b274776c54c320763bc12eb035c0e244f76ccb43 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1181315 Can you test that kernel and report back if it has the bug or not. I will build the next test kernel based on your test results. Thanks in advance -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The bug is not present in the kernel, v3.8 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/ Now, for v3.9-rc1, http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc1-saucy link is not found, so I tested with http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9.1-saucy/ and the bug is present in this kernel version. logs from both the versions are attached ** Attachment added: dmesg_v3.9.1-saucy https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3685598/+files/dmesg_v3.9.1-saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
logs with raring kernel where the bug is not present is attached ** Attachment added: dmesg_v3.8.raring https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3685599/+files/dmesg_v3.8.raring ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Tags added: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
I'd like to perform a bisect to figure out what commit caused this regression. We need to identify the earliest kernel where the issue started happening as well as the latest kernel that did not have this issue. Can you test the following kernels and report back? We are looking for the first kernel version that exhibits this bug: v3.8 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/ v3.9-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc1-saucy I assume 3.8 will not have the bug and v3.9-rc1 will. Thanks in advance! ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
The bug still exists in the upstream version, 3.10.0-031000rc1-generic, installed from above. Please see attached for the corresponding dmesg. Thanks ** Attachment added: dmesg2 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+attachment/3681866/+files/dmesg2 ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Tags added: iso-testing qa-daily-testing rls-r-incoming ** Tags removed: rls-r-incoming ** Tags added: rls-s-incoming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
** Description changed: When utah client is used to run floodlight smoke tests for saucy server images, the following error is reported. May 17 17:41:13 ubuntu kernel: [ 618.483362] IPv6: ADDRCONF(NETDEV_UP): s1-eth1: link is not ready May 17 17:41:23 ubuntu kernel: [ 628.220062] unregister_netdevice: waiting for lo to become free. Usage count = 2 May 17 17:41:33 ubuntu kernel: [ 638.460029] unregister_netdevice: waiting for lo to become free. Usage count = 2 ... ... May 17 17:44:16 ubuntu kernel: [ 801.760026] unregister_netdevice: waiting for lo to become free. Usage count = 2 May 17 17:44:27 ubuntu kernel: [ 812.29] unregister_netdevice: waiting for lo to become free. Usage count = 2 May 17 17:44:37 ubuntu kernel: [ 822.240031] unregister_netdevice: waiting for lo to become free. Usage count = 2 May 17 17:44:47 ubuntu kernel: [ 832.480024] unregister_netdevice: waiting for lo to become free. Usage count = 2 May 17 17:44:55 ubuntu kernel: [ 840.564053] INFO: task mnexec:9343 blocked for more than 120 seconds. May 17 17:44:55 ubuntu kernel: [ 840.564268] echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message. May 17 17:44:55 ubuntu kernel: [ 840.564494] mnexec D 88003fc14240 0 9343 8358 0x May 17 17:44:55 ubuntu kernel: [ 840.564498] 880036c3fe20 0046 880036c3ffd8 00014240 May 17 17:44:55 ubuntu kernel: [ 840.564501] 880036c3ffd8 00014240 88003c1add40 81ccea60 May 17 17:44:55 ubuntu kernel: [ 840.564503] 88003c1add40 81ccea64 81ccea68 May 17 17:44:55 ubuntu kernel: [ 840.564506] Call Trace: May 17 17:44:55 ubuntu kernel: [ 840.564531] [816d1499] schedule_preempt_disabled+0x29/0x70 May 17 17:44:55 ubuntu kernel: [ 840.564535] [816cf537] __mutex_lock_slowpath+0xe7/0x160 May 17 17:44:55 ubuntu kernel: [ 840.564550] [8117cbcf] ? __kmalloc+0x14f/0x180 May 17 17:44:55 ubuntu kernel: [ 840.564554] [816cefbf] mutex_lock+0x1f/0x30 May 17 17:44:55 ubuntu kernel: [ 840.564564] [815c5e05] copy_net_ns+0x65/0x100 May 17 17:44:55 ubuntu kernel: [ 840.564574] [810814e9] create_new_namespaces+0xf9/0x180 May 17 17:44:55 ubuntu kernel: [ 840.564577] [81081731] unshare_nsproxy_namespaces+0x61/0xa0 May 17 17:44:55 ubuntu kernel: [ 840.564582] [81057b41] sys_unshare+0x181/0x2a0 May 17 17:44:55 ubuntu kernel: [ 840.564585] [816da99d] system_call_fastpath+0x1a/0x1f This is observed to occur only when utah is used to run the floodlight smoke tests. Running the floodlight tests without utah does not cause this issue and using utah to run some other tests does not cause this issue either. Noticed a similar bug 1021471, but this one is occurring in KVM using libvirt. - The issue is only with the saucy kernel version, 3.9.0-1 and does not - occur with 3.9.0-0. The tests were tried with saucy server VMs on - precise as well as saucy hosts and the results is the same. + The issue is only with the saucy kernel versions, 3.9.0-1 onwards and + does not occur with 3.9.0-0. The tests were tried with saucy server VMs + on precise as well as saucy hosts and the results is the same. Steps to reproduce: 1. Install a default saucy server on a vm (either manually or preseeded default installation) with either i386 or amd64 image using KVM, libvirt 2. Do the following to install utah inside the VM sudo apt-add-repository -y ppa:utah/stable sudo apt-get update sudo apt-get install utah 3. Run the floodlight tests using sudo utah -r lp:ubuntu-test-cases/server/runlists/floodlight.run 4. Now kernel: [ 358.452029] unregister_netdevice: waiting for lo to become free. Usage count = 2 will be continuously reported The impacted jobs are, https://jenkins.qa.ubuntu.com/view/Saucy/view/Smoke%20Testing/job/saucy-server-amd64-smoke-floodlight/15/ and https://jenkins.qa.ubuntu.com/view/Saucy/view/Smoke%20Testing/job/saucy-server-i386-smoke-floodlight/13/ ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.9.0-2-generic 3.9.0-2.6 ProcVersionSignature: Ubuntu 3.9.0-2.6-generic 3.9.2 Uname: Linux 3.9.0-2-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.9.0-2-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.10.1-0ubuntu1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory: 'iw'
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.10 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as Confirmed. Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-rc1-saucy/ ** Changed in: linux (Ubuntu) Importance: Undecided = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1181315] Re: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah
If the bug still exists in v3.10-rc1, I can perform a kernel bisect to identify the commit that introduced this regression in 3.9.0-1 ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete ** Tags added: regression-update -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181315 Title: unregister_netdevice: waiting for lo to become free. Usage count = 2' is reported and causing kernel hang when floodlight tests are run using utah To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
