[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 --- Comment #6 from John F. Carr --- The multithreaded angle is a red herring. You don't need the program I attached. On an ordinary desktop class Zen processor ("Ryzen 5 PRO 2400GE") running CURRENT I ran $ pmcstat -U -P instructions ec

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 --- Comment #5 from John F. Carr --- I opened bug 268943 to track the second issue, pmcstat always causes a panic on a bhyve guest running CURRENT. It looks different. Let's consider this bug about the original "Retrieving callchain for t

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 John F. Carr changed: What|Removed |Added See Also||https://bugs.freebsd.org/bu

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 --- Comment #4 from John F. Carr --- The PMC crash on CURRENT in a VM is unrelated to my test program. It happens with /bin/ls: # pmcstat -p instructions ls > /dev/null 2> /tmp/2 panic: [amd,770] PMC0, CPU0 "K8-0" already stopped cpuid =

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 --- Comment #3 from John F. Carr --- Created attachment 239457 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=239457&action=edit Reproduction program and required libraries I attached a tar file with the executable "run" and the

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 --- Comment #2 from John F. Carr --- I ran the same command again and the system crashed immediately. The program only runs for a second or a few seconds. It did not crash when I did not use pmcstat's "-U" option. The program "run" start

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 Mitchell Horne changed: What|Removed |Added CC||mho...@freebsd.org --- Comment #1

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 Graham Perrin changed: What|Removed |Added Status|New |Open Keywords|

[Bug 268897] panic: [pmc,4811] Retrieving callchain for thread that doesn't want it

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268897 Bug ID: 268897 Summary: panic: [pmc,4811] Retrieving callchain for thread that doesn't want it Product: Base System Version: 13.1-STABLE Hardware: Any