Description: reading /proc/sysvipc/shm does not scale with large shared memory segment counts
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1986473
 https://bugzilla.redhat.com/show_bug.cgi?id=1980619
 https://lore.kernel.org/all/20210809203554.1562989-1-aquini@redhat.com/
Notes:
 carnil> Until 2021-08-03 missing details in Red Hat bugreport. Not
 carnil> considered high impact and so the information is yet dovered in
 carnil> the respective product bug. Upstream has not been notified
 carnil> according to
 carnil> https://bugzilla.redhat.com/show_bug.cgi?id=1986473#c10
Bugs:
upstream: released (5.15-rc1) [20401d1058f3f841f35a594ac2fc1293710e55b9]
6.1-upstream-stable: N/A "Fixed before branch point"
5.10-upstream-stable: needed
4.19-upstream-stable: needed
4.9-upstream-stable: ignored "EOL"
sid: released (5.15.3-1)
6.1-bookworm-security: N/A "Fixed before branch point"
5.10-bullseye-security: needed
4.19-buster-security: needed
4.9-stretch-security: ignored "EOL"