Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.12 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/v3.12-rc6-saucy/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1242713 Title: NFSv3 hangs when using ACLs and KRB5 with linux-image-generic-lts- raring Status in “linux” package in Ubuntu: Incomplete Status in “linux-lts-raring” package in Ubuntu: New Bug description: I was testing upgrading some computers to 12.04.3 (with the LTS raring kernel - 3.8.0) and came across a problem with NFSv3/ACLs and KRB5 security. Any access to the NFS mounted filesystem that tries to access the access control list (ACL) hangs. The NFS server is running 12.04.3 with the normal 3.2.0 kernel. I mount the filesystem using: mount -o nfsvers=3,tcp,sec=krb5 fileserver:/export/home /home and it mounts fine. Afterwards though, if you try and do something simple such as an 'ls -l /home' then it hangs. Using strace to see why the ls -l hangs reveals that it is hanging at ..... lstat("/home/student", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 lgetxattr("/home/student", "security.selinux", 0xc77ea0, 255) = -1 EOPNOTSUPP (Operation not supported) lgetxattr("/home/student", "system.posix_acl_access" It all works fine if you either use the "noacl" mount option or remove the "sec=krb5" mount option. I have tried using 13.04 as the client and it has the same problem. I can also confirm that the problem exists with using the LTS raring kernel on the server. The LTS quantal kernel (3.5.0) as the client works fine. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: nfs-common 1:1.2.5-3ubuntu3.1 ProcVersionSignature: Ubuntu 3.2.0-54.82-generic 3.2.50 Uname: Linux 3.2.0-54-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.5 Architecture: amd64 Date: Mon Oct 21 14:37:02 2013 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True SourcePackage: nfs-utils UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1242713/+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
