kernel-packages team mailing list archive

[Mike Frysinger <vapier@xxxxxxxxxx>]

Public bug reported:

run the attached script which:
 - creates a disk image
 - creates an ext2 fs in the middle of it
 - mounts that ext2 fs via loopback
 - deploys & runs some code in that mount
 - tries to unmount it

the kernel ends up saying the mount is busy (it's not) and it's not
possible to detach the loopback (probably because even with a lazy
unmount, the kernel holds references to it)

this is the utopic kernel 3.16.0-33

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "test data tarball"
   https://bugs.launchpad.net/bugs/1437414/+attachment/4358000/+files/openssl-1.0.2a.tbz2

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https://bugs.launchpad.net/bugs/1437414

Title:
  kernel unable to unmount loopbacks & leaks them

Status in linux package in Ubuntu:
  New

Bug description:
  run the attached script which:
   - creates a disk image
   - creates an ext2 fs in the middle of it
   - mounts that ext2 fs via loopback
   - deploys & runs some code in that mount
   - tries to unmount it

  the kernel ends up saying the mount is busy (it's not) and it's not
  possible to detach the loopback (probably because even with a lazy
  unmount, the kernel holds references to it)

  this is the utopic kernel 3.16.0-33

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