** Description changed: + SRU Justification + + Impact: A regression in xenial causes automatic mounting of exported + submounts of an nfs mount to fail. + + Fix: Change nfs to use sget_userns instead of sget, bypassing a + capability check that is not necessary for nfs. + + Regression Potential: The behavior after the fix is functionally + equivalent to upstream, so this is unlikely to cause regressions. + + --- + I am denied access to the subfilesystems exported by my nfs server (the top level filesystem itself is unaffected). The client is reporting that I do not have the necessary permissions. However, all was fine until the day before yesterday. When I revert my client to 4.4.0-28, everything is in working order again. I assume the permission problem is really a bug in kernel 4.4.0-31. - --- + --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: jurgen 1743 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: jurgen 1743 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=569da237-3a37-4fe3-b885-83213aae8b52 InstallationDate: Installed on 2016-04-07 (101 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160405) IwConfig: - lo no wireless extensions. - - enp4s0 no wireless extensions. + lo no wireless extensions. + + enp4s0 no wireless extensions. MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7514 NonfreeKernelModules: nvidia Package: linux (not installed) ProcFB: - + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=f6f6bd51-4d4f-4547-b615-90319625d909 ro quiet splash ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 RelatedPackageVersions: - linux-restricted-modules-4.4.0-31-generic N/A - linux-backports-modules-4.4.0-31-generic N/A - linux-firmware 1.157.2 + linux-restricted-modules-4.4.0-31-generic N/A + linux-backports-modules-4.4.0-31-generic N/A + linux-firmware 1.157.2 RfKill: - + Tags: xenial Uname: Linux 4.4.0-31-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/28/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.1 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: MS-7514 dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.1:bd05/28/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7514:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-7514:rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0: dmi.product.name: MS-7514 dmi.product.version: 1.0 dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
-- 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/1603719 Title: [regression] NFS client: access problems after updating to kernel 4.4.0-31-generic Status in linux package in Ubuntu: Invalid Status in linux source package in Xenial: In Progress Bug description: SRU Justification Impact: A regression in xenial causes automatic mounting of exported submounts of an nfs mount to fail. Fix: Change nfs to use sget_userns instead of sget, bypassing a capability check that is not necessary for nfs. Regression Potential: The behavior after the fix is functionally equivalent to upstream, so this is unlikely to cause regressions. --- I am denied access to the subfilesystems exported by my nfs server (the top level filesystem itself is unaffected). The client is reporting that I do not have the necessary permissions. However, all was fine until the day before yesterday. When I revert my client to 4.4.0-28, everything is in working order again. I assume the permission problem is really a bug in kernel 4.4.0-31. --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jurgen 1743 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=569da237-3a37-4fe3-b885-83213aae8b52 InstallationDate: Installed on 2016-04-07 (101 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160405) IwConfig: lo no wireless extensions. enp4s0 no wireless extensions. MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7514 NonfreeKernelModules: nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=f6f6bd51-4d4f-4547-b615-90319625d909 ro quiet splash ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 RelatedPackageVersions: linux-restricted-modules-4.4.0-31-generic N/A linux-backports-modules-4.4.0-31-generic N/A linux-firmware 1.157.2 RfKill: Tags: xenial Uname: Linux 4.4.0-31-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/28/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.1 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: MS-7514 dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.1:bd05/28/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7514:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-7514:rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0: dmi.product.name: MS-7514 dmi.product.version: 1.0 dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1603719/+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
