[Bug 1934893] [NEW] libc6 2.33 breaks gdb 10.1

[Levi Bard]

Public bug reported:

Symptoms: attaching gdb to any program that uses pthreads will result in
fatal errors like "Cannot find user-level thread for LWP 192701: generic
error"

The upstream bug is
https://sourceware.org/bugzilla/show_bug.cgi?id=27744

It looks like the fix has already been adopted in
https://launchpad.net/ubuntu/+source/glibc/2.33-0ubuntu7 , but it needs
to be backported to 21.04/hirsute

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

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https://bugs.launchpad.net/bugs/1934893

Title:
  libc6 2.33 breaks gdb 10.1

Status in glibc package in Ubuntu:
  New

Bug description:
  Symptoms: attaching gdb to any program that uses pthreads will result
  in fatal errors like "Cannot find user-level thread for LWP 192701:
  generic error"

  The upstream bug is
  https://sourceware.org/bugzilla/show_bug.cgi?id=27744

  It looks like the fix has already been adopted in
  https://launchpad.net/ubuntu/+source/glibc/2.33-0ubuntu7 , but it
  needs to be backported to 21.04/hirsute

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