[Bug 271945] panic: deadlres_td_sleep_q : possible deadlock detected for … (stat) | (postgres) | (LTO toml.54d28171-c) , blocked for … ticks – during poudriere-bulk(8)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271945

--- Comment #16 from Graham Perrin ◐ <grahamperrin@gmail.com> ---
Created attachment 244007
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=244007&action=edit
Retrospective screenshot of poudriere

(In reply to Cy Schubert from comment #2)

> … with -j 1 it will never happen. …

Because I like to live dangerously, here's a retrospective view of a two-job
run during which a hard freeze occurred. Apparently building at the time: 

ghostscript9-agpl-base-9.56.1_12
pango-1.50.14


The then boot environment was a clean (non -dirty) GENERIC-NODEBUG build of the
OS: 


root@mowa219-gjp4-8570p-freebsd:~ # strings /tmp/clean/boot/kernel/kernel |
grep 09c20a293280
@(#)FreeBSD 14.0-CURRENT amd64 1400094 #3 main-n264621-09c20a293280: Thu Aug 10
02:08:53 BST 2023
FreeBSD 14.0-CURRENT amd64 1400094 #3 main-n264621-09c20a293280: Thu Aug 10
02:08:53 BST 2023
root@mowa219-gjp4-8570p-freebsd:~ # bectl umount n264621-09c20a293280-c 
root@mowa219-gjp4-8570p-freebsd:~ # 


----

It's not all bad. Re: bug 272834 comment 5, before I realised that the freeze
coincided with a run of poudriere, I took photographs of screens. So, you
lucky, lucky people get to see <https://photos.app.goo.gl/Ad9apU9Ny9uTdaXH6> in
the background, a 1960s framed photograph of a lovely lady famed for long, long
live love, mmm-mm.

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