The TLB tlb/tlb_flush perf event tickles this bug, disabling it won't trip the issue.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1875941 Title: using perf as root locks up focal kernel Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: New 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 <jroe...@suse.de> 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875941/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
