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[Christian Ehrhardt  <1755681@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1837444 ***
    https://bugs.launchpad.net/bugs/1837444

Lucas identified this beign the same as one that he works on.
Marking as duplicate.

** This bug has been marked a duplicate of bug 1837444
   pstree seg fault

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https://bugs.launchpad.net/bugs/1755681

Title:
  pstree crashes on fclose(NULL)

Status in psmisc package in Ubuntu:
  Fix Released
Status in psmisc source package in Xenial:
  Confirmed

Bug description:
  I am on 16.04.4 LTS.  I am seeing pstree crash intermittently, and I
  tracked it down to an fclose(NULL):

  https://gitlab.com/psmisc/psmisc/blob/28005b99fedef566b06286bd6ca72a7a4d673f20/src/pstree.c#L822

  I am guessing it is a race condition where the procfs entry disappears
  between dir listing and the fopen() call several lines above.

  This is fixed in the latest release (v23.0, released 9 months ago) but
  exists in the current version of psmisc for 16.04.4 (v22.21).

  Would this call for a bump of the upstream version, or an Ubuntu-
  specific patch to remove that fclose() call?

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