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

[Mohammed Naser]

*** This bug is a duplicate of bug 1851263 ***
    https://bugs.launchpad.net/bugs/1851263

Upon checking, it seems that the latest proposed release actually
includes a full rebase to 2.27 which has the fix.

** This bug has been marked a duplicate of bug 1851263
   Ubuntu 18.04.3 LTS bump Glibc 2.27 to the latest stable

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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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