*** This bug is a duplicate of bug 1878649 ***
https://bugs.launchpad.net/bugs/1878649
Fixed as part of the SRU process:
https://bugs.launchpad.net/bugs/1878649
https://kernel.ubuntu.com/git/ubuntu/ubuntu-focal.git/commit/?h=master-
next&id=7e02b9b6cb0f61440598c06572172241de4ed9ea
** Changed in: linux (Ubuntu Focal)
Status: New => Fix Committed
** This bug has been marked a duplicate of bug 1878649
Focal update: v5.4.41 upstream stable release
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https://bugs.launchpad.net/bugs/1875941
Title:
using perf can crash kernel with a stack overflow
Status in Linux:
Confirmed
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Focal:
Fix Committed
Bug description:
running sudo stress-ng --perf --cpu 1 -t 10 will cause the recent
5.4.0-25-generic kernel to lock up with no information on the console
showing where it is locked up.
Bisected this back to:
commit d44d71bbb9618c526820b39fe1cd0673582dc8c4 (refs/bisect/bad)
Author: Joerg Roedel <[email protected]>
Date: Sat Mar 21 18:22:41 2020 -0700
x86/mm: split vmalloc_sync_all()
BugLink: https://bugs.launchpad.net/bugs/1869061
commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.
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