[Bug 1438375] Re: autofs prevents machine from suspending

[Paride Legovini]

Hello Chris and sorry for not replying to this bug report back when it
was filed. As of today it's an "old bug": none of the releases which
were supported in 2015 is supported today. Should anybody be hitting an
issue that fits with the description of this bug, my suggestion is to
file a new bug report, as most likely it will be a different issue. You
may find it helpful to read "How to report bugs effectively":
http://www.chiark.greenend.org.uk/~sgtatham/bugs.html.

I'm marking this bug report as Incomplete for the moment. Should anybody
disagree with the above please comment back and change the bug status
back to New, we'll look at it again. Thanks!

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

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Title:
  autofs prevents machine from suspending

Status in autofs package in Ubuntu:
  Incomplete

Bug description:
  autofs prevents my laptop from suspending while mounts are active:

  [ 1095.355009] Freezing user space processes ... 
  [ 1115.369769] Freezing of tasks failed after 20.005 seconds (1 tasks refusing to freeze, wq_busy=0):
  [ 1115.369833] df              D ffff88011f2d34c0     0 15931  15930 0x00000004
  [ 1115.369838]  ffff8801170cdd58 0000000000000086 ffff8800a3ab1800 ffff8801170cdfd8
  [ 1115.369843]  00000000000134c0 00000000000134c0 ffff8800a3ab1800 ffff8800a3a77320
  [ 1115.369847]  ffff8800b0400800 ffff8801170cdd80 ffff8800a3a77400 0000000000000000
  [ 1115.369851] Call Trace:
  [ 1115.369862]  [<ffffffff81725919>] schedule+0x29/0x70
  [ 1115.369867]  [<ffffffff812acfd5>] __fuse_request_send+0x115/0x280
  [ 1115.369873]  [<ffffffff810ab120>] ? prepare_to_wait_event+0x100/0x100
  [ 1115.369877]  [<ffffffff812ad152>] fuse_request_send+0x12/0x20
  [ 1115.369880]  [<ffffffff812b9446>] fuse_statfs+0xc6/0x140
  [ 1115.369886]  [<ffffffff811ef251>] statfs_by_dentry+0xa1/0x140
  [ 1115.369890]  [<ffffffff811ef30b>] vfs_statfs+0x1b/0xb0
  [ 1115.369894]  [<ffffffff811ef3e6>] user_statfs+0x46/0x80
  [ 1115.369898]  [<ffffffff811ef435>] SYSC_statfs+0x15/0x30
  [ 1115.369902]  [<ffffffff811ef56e>] SyS_statfs+0xe/0x10
  [ 1115.369906]  [<ffffffff81731fbd>] system_call_fastpath+0x1a/0x1f
  [ 1115.369909] 
  [ 1115.369910] Restarting tasks ... done.

  Placing a script under /etc/pm/sleep.d to stop and restart autofs on
  suspend/resume will resolve the issue.

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