Public bug reported:
On Intel Xeon processors newer than the E5 v4 family, calling rmdir() on
a resctrl monitor-only group causes a segmentation fault in kernel.
After the segfault many operation will hang including the bug report
command `ubuntu-bug linux`. Even the `reboot` command hangs and a
dmesg containing the call trace is attached below.
** Attachment added: "free_all_child_rdtgrp-segfault-dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1873126/+attachment/5355103/+files/free_all_child_rdtgrp-segfault-dmesg.log
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** Tags added: resctrl
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https://bugs.launchpad.net/bugs/1873126
Title:
Calling rmdir() on a resctrl monitor group results in segmentation
fault and hangs the system
To manage
