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[Bug 966966] Re: mount segmentation fault on remount

 

Илья, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc6

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: needs-upstream-testing

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/966966

Title:
  mount segmentation fault on remount

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After run commands:
   mount -o remount,ro /dev/sdb7
   tune2fs -O ^has_journal /dev/sdb7
  mount -o remount,rw /dev/sdb7

  Mount crashed with segmentation fault.

  A dmesg result in attach.

  If try again remount, mount util is freezes:
  root@node21:~# mount -o remount,rw /dev/sdb7
  ^C
  ^C
  ^C

  
  If try to umount /dev/sdb7:
  root@node21:~# umount /tempdata
  umount: /tempdata: device is busy.
          (In some cases useful info about processes that use
           the device is found by lsof(8) or fuser(1))
  but
  root@node21:/# lsof | grep tempdata
  root@node21:/#
  --- 
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  CurrentDmesg:
   
  DistroRelease: Ubuntu 10.04
  InstallationMedia: Ubuntu-Server 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110719.2)
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: VMware, Inc. VMware Virtual Platform
  Package: linux (not installed)
  PciMultimedia:
   
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-40-server root=UUID=15f7b45b-ead3-4564-93bd-6c19b3ac4aad ro quiet
  ProcEnviron:
   PATH=(custom, no user)
   LANG=ru_UA.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-40.87-server 2.6.32.57+drm33.23
  Regression: No
  Reproducible: Yes
  Tags: lucid filesystem needs-upstream-testing
  Uname: Linux 2.6.32-40-server x86_64
  UserGroups:
   
  dmi.bios.date: 01/07/2011
  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:bd01/07/2011: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.

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