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[Bug 1755681] Re: pstree crashes on fclose(NULL)

 

I think you are right here, not sure what happened to the triager of
march 14th.

23 is in Artful and Bionic already.
So the question here is to backport via an SRU to Xenial

** Also affects: psmisc (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: psmisc (Ubuntu)
       Status: New => Fix Released

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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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