Re: October 2026 stabilization week

On Tue, Oct 27, 2026 at 01:52:43PM +0300, Dima Panov wrote:
> Hello!
> 
> 
> Houston, we have a problem!
> 
> When building latest stabweek world in poudriere on my aarch64 machine, I've got an error in libthr when pkg command is called:
> 
> 
> ===> Creating FreeBSD-kernel-generic-nodebug-16.snap20261026210619
> Fatal error 'mutex 0x41814480 own 0x8c935 is on list 0x0 0x409e0008' at line 154 in file /opt/poudriere/jails/16aarch64/usr/src/lib/libthr/thread/thr_mutex.c (errno = 0)
> Abort trap (core dumped)
> 
> Host system was a 16.0-CURRENT #0 main-461da47e45e7: Sun Oct 18 02:22:28 MSK 2026
> Same error on host FreeBSD 16.0-CURRENT #0 main-5250c9890848: Tue Oct 27 00:49:17 MSK 2026
> 
> But when I revert host to 16.0-CURRENT #0 main-17af098383ba: Fri Sep 18 23:23:19 MSK 2026
> all builds runs without any errors
> 
> Looks like some of latest commits between Sept 18 and Oct18 in libthr causes this failure
> 
> 4472a048cf95c9c1593a8b04655a59096b44b0c9
> 192781bf5d047cceff3a1947bfc754c8b5eb0835
> 1d21e67e720a08992e81d626cff9d76524a81f22
> 627e7d5b72cf967eae3cd9e9e0707ce0ff63a4da
> 99edcc3bd52614c6cf972ea8424a7807ed3fe1e3
> de2c0f157a9cce0b763da9ae97ada870fa4d1824
> 305c3044e0249ea24a9b4571dfa6ae319a5bcdec
> 5fb07bbcd5d5d9a865d9e7765fb93e9ba5edef1c
> a0e152973613e0d0d55257f4e1f614509b7ec4c9
> 894f70a2bd8c7f67f131b76b9ce122a752818af3

What is the program that asserted?
Get the core dump and backtrace.