[Bug 1899544] [NEW] rdlock stalls indefinitely on an unlocked pthread rwlock

[Mohammed Naser]

Public bug reported:

I'm reporting this here in order to help track fixing this inside
Ubuntu, 18.04 as its' already been fixed upstream:

https://sourceware.org/bugzilla/show_bug.cgi?id=23861

I can confirm that this issue indeed occurs on a Ubuntu 18.04 system
*and* it even occurs with the current proposed version of glibc
(2.27-3ubuntu1.3).  One of the workloads that are frequently crashing by
this are Open vSwitch:

https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1839592/comments/18

Would it be possible to add this to Ubuntu?  There is already a commit
on the 2.27 branch upstream:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f6d0e8c36f02b387d33f2cc58c7cb204f201d92e

Thank you

** Affects: glibc (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  I'm reporting this here in order to help track fixing this inside
- Ubuntu, as its' already been fixed upstream:
+ Ubuntu, 18.04 as its' already been fixed upstream:
  
  https://sourceware.org/bugzilla/show_bug.cgi?id=23861
  
  I can confirm that this issue indeed occurs on a Ubuntu 18.04 system
  *and* it even occurs with the current proposed version of glibc
  (2.27-3ubuntu1.3).  One of the workloads that are frequently crashing by
  this are Open vSwitch:
  
  https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1839592/comments/18
  
  Would it be possible to add this to Ubuntu?  There is already a commit
  on the 2.27 branch upstream:
  
  https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f6d0e8c36f02b387d33f2cc58c7cb204f201d92e
  
  Thank you

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https://bugs.launchpad.net/bugs/1899544

Title:
  rdlock stalls indefinitely on an unlocked pthread rwlock

Status in glibc package in Ubuntu:
  New

Bug description:
  I'm reporting this here in order to help track fixing this inside
  Ubuntu, 18.04 as its' already been fixed upstream:

  https://sourceware.org/bugzilla/show_bug.cgi?id=23861

  I can confirm that this issue indeed occurs on a Ubuntu 18.04 system
  *and* it even occurs with the current proposed version of glibc
  (2.27-3ubuntu1.3).  One of the workloads that are frequently crashing
  by this are Open vSwitch:

  https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1839592/comments/18

  Would it be possible to add this to Ubuntu?  There is already a commit
  on the 2.27 branch upstream:

  https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f6d0e8c36f02b387d33f2cc58c7cb204f201d92e

  Thank you

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