[Bug 1913423] Re: getgrouplist is not thread safe with libnss_systemd

[Dan Streetman]

** Description changed:

+ [impact]
+ 
+ programs calling getgrouplist() may crash as it is not thread-safe
+ 
+ [test case]
+ 
+ see upstream bug description for sample c program to reproduce:
+ https://github.com/systemd/systemd/issues/17007#issue-698123284
+ 
+ [regression potential]
+ 
+ any regression would likely occur when creating a hashmap in systemd, or
+ when any multi-threaded programs use the hashmap
+ 
+ [scope]
+ 
+ this is needed for f and b
+ 
+ this is fixed upstream by commit
+ ae0b700a856c0ae460d271bb50dccfaae84dbcab, already included in g/h (per
+ comment 1).
+ 
+ [original description]
+ 
  This upstream issue (https://github.com/systemd/systemd/issues/17007) is
  affecting the latest version of systemd in Ubuntu Focal. It has been
  fixed upstream with https://github.com/systemd/systemd/pull/17033. Can
  we have this patched for Focal please as it causes Mesos to randomly
  segfault on start.

** Description changed:

  [impact]
  
  programs calling getgrouplist() may crash as it is not thread-safe
  
  [test case]
  
  see upstream bug description for sample c program to reproduce:
  https://github.com/systemd/systemd/issues/17007#issue-698123284
  
  [regression potential]
  
  any regression would likely occur when creating a hashmap in systemd, or
- when any multi-threaded programs use the hashmap
+ when any multi-threaded programs concurrently create (and use) the
+ hashmap
  
  [scope]
  
  this is needed for f and b
  
  this is fixed upstream by commit
  ae0b700a856c0ae460d271bb50dccfaae84dbcab, already included in g/h (per
  comment 1).
  
  [original description]
  
  This upstream issue (https://github.com/systemd/systemd/issues/17007) is
  affecting the latest version of systemd in Ubuntu Focal. It has been
  fixed upstream with https://github.com/systemd/systemd/pull/17033. Can
  we have this patched for Focal please as it causes Mesos to randomly
  segfault on start.

** Also affects: systemd (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: systemd (Ubuntu Focal)
       Status: New => In Progress

** Changed in: systemd (Ubuntu Focal)
   Importance: Undecided => Medium

** Changed in: systemd (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: systemd (Ubuntu Bionic)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

** Changed in: systemd (Ubuntu Focal)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

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https://bugs.launchpad.net/bugs/1913423

Title:
  getgrouplist is not thread safe with libnss_systemd

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  In Progress
Status in systemd source package in Focal:
  In Progress

Bug description:
  [impact]

  programs calling getgrouplist() may crash as it is not thread-safe

  [test case]

  see upstream bug description for sample c program to reproduce:
  https://github.com/systemd/systemd/issues/17007#issue-698123284

  [regression potential]

  any regression would likely occur when creating a hashmap in systemd,
  or when any multi-threaded programs concurrently create (and use) the
  hashmap

  [scope]

  this is needed for f and b

  this is fixed upstream by commit
  ae0b700a856c0ae460d271bb50dccfaae84dbcab, already included in g/h (per
  comment 1).

  [original description]

  This upstream issue (https://github.com/systemd/systemd/issues/17007)
  is affecting the latest version of systemd in Ubuntu Focal. It has
  been fixed upstream with
  https://github.com/systemd/systemd/pull/17033. Can we have this
  patched for Focal please as it causes Mesos to randomly segfault on
  start.

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