apport information ** Tags added: apport-collected trusty
** Description changed: I have a development environment that uses Vagrant with NFS shares to a Trusty development VM from OS X laptops. After the upgrade to the HWE kernel 3.16, installing Ruby gems into the NFS mount inside the VM failed because of install(1) failing with permission errors. Debugging revealed that it's trying to set POSIX extended ACLs using setxattr(); On 3.13 this operation failed with EOPNOTSUPP (the server does not support extended ACLs), but on 3.16 it fails with EPERM, even if the NFS mount is explicitly mounted with "noacl". Debugging with ftrace and source diving suggests that kernel 3.16 refactored the POSIX extended ACL code so that before the call even hits the NFS layer, it passes through a generic permission-check layer. It appears that that layer is not aware of NFS UID remapping, and so fails the call regardless of what the server would have done. A simple test case is `install -c -m 0755 <some file> <some path in an NFS mount>`, which will succeed on 3.13 and fail on 3.16. The broken system is: vagrant@packer-vmware-iso:~$ lsb_release -a; uname -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.2 LTS Release: 14.04 Codename: trusty Linux packer-vmware-iso 3.16.0-34-generic #47~14.04.1-Ubuntu SMP Fri Apr 10 17:49:16 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux + --- + AlsaDevices: + total 0 + crw-rw---- 1 root audio 116, 1 Dec 22 14:39 seq + crw-rw---- 1 root audio 116, 33 Dec 22 14:39 timer + AplayDevices: Error: [Errno 2] No such file or directory + ApportVersion: 2.14.1-0ubuntu3.19 + 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: + CRDA: Error: [Errno 2] No such file or directory + DistroRelease: Ubuntu 14.04 + HibernationDevice: RESUME=/dev/mapper/packer--vmware--iso--vg-swap_1 + InstallationDate: Installed on 2015-09-02 (111 days ago) + InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3) + IwConfig: Error: [Errno 2] No such file or directory + Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 + MachineType: VMware, Inc. VMware Virtual Platform + Package: linux (not installed) + PciMultimedia: + + ProcFB: 0 svgadrmfb + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-57-generic root=/dev/mapper/packer--vmware--iso--vg-root ro quiet + ProcVersionSignature: Ubuntu 3.16.0-57.77~14.04.1-generic 3.16.7-ckt20 + RelatedPackageVersions: + linux-restricted-modules-3.16.0-57-generic N/A + linux-backports-modules-3.16.0-57-generic N/A + linux-firmware 1.127.15 + RfKill: Error: [Errno 2] No such file or directory + Tags: trusty + Uname: Linux 3.16.0-57-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 05/20/2014 + dmi.bios.vendor: Phoenix Technologies LTD + dmi.bios.version: 6.00 + dmi.board.name: 440BX Desktop Reference Platform + dmi.board.vendor: Intel Corporation + dmi.board.version: None + dmi.chassis.asset.tag: No Asset Tag + dmi.chassis.type: 1 + dmi.chassis.vendor: No Enclosure + dmi.chassis.version: N/A + dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd05/20/2014:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: + dmi.product.name: VMware Virtual Platform + dmi.product.version: None + dmi.sys.vendor: VMware, Inc. ** Attachment added: "BootDmesg.txt" https://bugs.launchpad.net/bugs/1445664/+attachment/4539009/+files/BootDmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1445664 Title: kernel 3.16 breaks POSIX extended ACLs over NFS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1445664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
