[Bug 285275] crashinfo(8) does not work when run manually: /wrkdirs/usr/ports/devel/gdb/work-py311/gdb-15.1/gdb/thread.c:1423: internal-error: switch_to_thread: Assertion `thr != NULL' failed.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285275

--- Comment #1 from Graham Perrin <grahamperrin@gmail.com> ---
Two sets of notes from yesterday morning: 

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root@mowa219-gjp4-zbook-freebsd:/var/crash # rm kgdb151.core
root@mowa219-gjp4-zbook-freebsd:/var/crash # date ; uptime 
Sat Mar  8 03:17:30 GMT 2025
 3:17AM  up 42 mins, 5 users, load averages: 0.75, 1.36, 1.10
root@mowa219-gjp4-zbook-freebsd:/var/crash # crashinfo vmcore.13
Writing crash summary to ./core.txt.13.
You have new mail.
root@mowa219-gjp4-zbook-freebsd:/var/crash # ls -hlnrt | grep 8\ 03
-rw-------  1 0 0  2.8G Mar  8 03:17 kgdb151.core
-rw-r--r--  1 0 0  8.0K Mar  8 03:25 core.txt.13
root@mowa219-gjp4-zbook-freebsd:/var/crash # /usr/bin/time -h crashinfo
vmcore.13
Writing crash summary to ./core.txt.13.
        4m24.03s real           17.25s user             39.65s sys
root@mowa219-gjp4-zbook-freebsd:/var/crash # ls -hlnrt | grep 8\ 03
-rw-------  1 0 0  2.8G Mar  8 03:29 kgdb151.core
-rw-r--r--  1 0 0  8.3K Mar  8 03:33 core.txt.13
root@mowa219-gjp4-zbook-freebsd:/var/crash # cat info.13
Dump header from device: /dev/ada1p2
  Architecture: amd64
  Architecture Version: 2
  Dump Length: 2706395136
  Blocksize: 512
  Compression: none
  Dumptime: 2025-03-08 02:18:33 +0000
  Hostname: mowa219-gjp4-zbook-freebsd
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 15.0-CURRENT main-n275833-136c5e17b61a
GENERIC-NODEBUG
  Panic String: page fault
  Dump Parity: 3349005578
  Bounds: 13
  Dump Status: good
root@mowa219-gjp4-zbook-freebsd:/var/crash # ls -hln vmcore.13
-rw-------  1 0 0   82M Mar  8 02:27 vmcore.13
root@mowa219-gjp4-zbook-freebsd:/var/crash # du -hs vmcore.13
 23M    vmcore.13
root@mowa219-gjp4-zbook-freebsd:/var/crash # 

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root@mowa219-gjp4-zbook-freebsd:/var/crash # crashinfo vmcore.13
Writing crash summary to ./core.txt.13.
root@mowa219-gjp4-zbook-freebsd:/var/crash # ls -hlnrt | grep 8\ 04
-rw-------  1 0 0  2.8G Mar  8 04:03 kgdb151.core
-rw-r--r--  1 0 0  8.6K Mar  8 04:03 core.txt.13
root@mowa219-gjp4-zbook-freebsd:/var/crash # 

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In the first set, it's noticeable that a run of crashinfo sometimes takes much
longer than usual. In these cases, there is unexpectedly high use of memory; I
should treat this as a separate issue.

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