apport information ** Attachment added: "ProcModules.txt" https://bugs.launchpad.net/bugs/1467912/+attachment/4419364/+files/ProcModules.txt
-- 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/1467912 Title: error "ib_dealloc_pd failed" when load unload ib_ipoib module Status in linux package in Ubuntu: Incomplete Bug description: When we try to load and unload the ib_ipoib driver we get an error message. Steps to reproduce: load ib_ipoib: modprobe -v ib_ipoib configure ip: ifconfig ib0 11.135.196.7/16 unload driver: modprobe -rv ib_ipoib We will see this message in dmesg: [ 709.652944] ib0: ib_dealloc_pd failed uname output: root@qa-h-vrt-035:~# uname -a Linux qa-h-vrt-035 3.19.0-16-generic #16-Ubuntu SMP Thu Apr 30 16:09:58 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux The following two upstream commits fix this issue: commit 9ab874b6593045886b699df2bc3ff803d88a9f7c Author: Doug Ledford <dledf...@redhat.com> Date: Sat Feb 21 19:27:00 2015 -0500 IB/ipoib: change init sequence ordering In preparation for using per device work queues, we need to move the start of the neighbor thread task to after ipoib_ib_dev_init and move the destruction of the neighbor task to before ipoib_ib_dev_cleanup. Otherwise we will end up freeing our workqueue with work possibly still on it. Signed-off-by: Doug Ledford <dledf...@redhat.com> commit 6387d8d5896536b904ba6937fe019a29548e3a86 Author: Doug Ledford <dledf...@redhat.com> Date: Sat Feb 21 19:26:59 2015 -0500 IB/ipoib: factor out ah flushing Create a an ipoib_flush_ah and ipoib_stop_ah routines to use at appropriate times to flush out all remaining ah entries before we shut the device down. Because neighbors and mcast entries can each have a reference on any given ah, we must make sure to free all of those first before our ah will actually have a 0 refcount and be able to be reaped. This factoring is needed in preparation for having per-device work queues. The original per-device workqueue code resulted in the following error message: <ibdev>: ib_dealloc_pd failed That error was tracked down to this issue. With the changes to which workqueues were flushed when, there were no flushes of the per device workqueue after the last ah's were freed, resulting in an attempt to dealloc the pd with outstanding resources still allocated. This code puts the explicit flushes in the needed places to avoid that problem. Signed-off-by: Doug Ledford <dledf...@redhat.com> --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jun 23 15:16 seq crw-rw---- 1 root audio 116, 33 Jun 23 15:16 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=00a63930-d83a-446b-a3e4-b5910e884c7f IwConfig: Error: [Errno 2] No such file or directory Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: Red Hat KVM Package: linux (not installed) PciMultimedia: ProcFB: 0 cirrusdrmfb ProcKernelCmdLine: root=/dev/sda2 console=tty0 console=ttyS0,115200n8 rhgb ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143 RfKill: Error: [Errno 2] No such file or directory Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 01/01/2011 dmi.bios.vendor: Bochs dmi.bios.version: Bochs dmi.chassis.type: 1 dmi.chassis.vendor: Bochs dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnRedHat:pnKVM:pvrRHEL7.0.0PC(i440FX+PIIX,1996):cvnBochs:ct1:cvr: dmi.product.name: KVM dmi.product.version: RHEL 7.0.0 PC (i440FX + PIIX, 1996) dmi.sys.vendor: Red Hat To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1467912/+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
