[Bug 376982] Re: gpg hangs in mlock, cannot be killed

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: gnupg (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/376982

Title:
  gpg hangs in mlock, cannot be killed

Status in gnupg package in Ubuntu:
  Confirmed

Bug description:
  I've noticed (by running "htop") a number of processes whose state is "D" -- uninterruptible sleep.  This is unusual.  A few of them are gpg.
  gnupg version 1.4.9-3ubuntu1

  I've also noticed that whenever I run gpg, it hangs, and I cannot kill
  it: not by typing Control C, nor Control Z; nor by switching to a
  different terminal, becoming root, and trying "kill -9" on the
  process' PID.

  I can no longer do any encryption or decryption.  This rather sucks
  :-|

  I ran "strace -f -o yow gpg < some-file" and captured the output; the
  last lines are

  10076 fstat64(3, {st_mode=S_IFREG|0644, st_size=256316, ...}) = 0
  10076 mmap2(NULL, 256316, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7c9b000
  10076 close(3)                          = 0
  10076 mmap2(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7c93000
  10076 getuid32()                        = 1000
  10076 mlock(0xb7c93000, 32768

  So it's hanging in "mlock".

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