[Bug 2048866] [NEW] glibc: pthread_atfork handlers that call pthread_atfork deadlock

[Ayala Wexelbom]

Public bug reported:

I encountered a bug in glibc fork handlers mechanism, this bug was
originally detected, reproduced and fixed in the RedHat glibc library :
https://bugzilla.redhat.com/show_bug.cgi?id=1888660

In this bug, running the same preproduction snippet code from Rhel 8
Glibc bug, reproduces the deadlock seen in the original bug.

Seen on Ubuntu 22.04 on GLIBC 2.35
Also seen on Ubuntu 20.04 GLIBC 2.31

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

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https://bugs.launchpad.net/bugs/2048866

Title:
  glibc: pthread_atfork handlers that call pthread_atfork deadlock

Status in glibc package in Ubuntu:
  New

Bug description:
  I encountered a bug in glibc fork handlers mechanism, this bug was
  originally detected, reproduced and fixed in the RedHat glibc library
  : https://bugzilla.redhat.com/show_bug.cgi?id=1888660

  In this bug, running the same preproduction snippet code from Rhel 8
  Glibc bug, reproduces the deadlock seen in the original bug.

  Seen on Ubuntu 22.04 on GLIBC 2.35
  Also seen on Ubuntu 20.04 GLIBC 2.31

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