Re: Installworld: rescue/sh check failed, core dumped

On Jun 2, 2025, at 15:00, Mark Millard <marklmi@yahoo.com> wrote:

> On Jun 2, 2025, at 12:01, bob prohaska <fbsd@www.zefox.net> wrote:
> 
>> A pair of Pi2 (armv7) hosts running current have refused to
>> installworld after what looks like successful buildworlds. 
>> 
>> The tail of buildworld's log file reports:
>> make[1]: /usr/obj/usr/src/arm.armv7/toolchain-metadata.mk:1: Using cached toolchain metadata from build at www.zefox.org on Mon Jun  2 10:13:09 PDT 2025
>> --- __installcheck_UGID ---
>> --- __installcheck_sh_check ---
>> Bad system call (core dumped)
>> rescue/sh check failed, installation aborted
>> 
>> The two hosts have been successfully building and installing world/kernel
>> for some months. This error is new to me, if it's self-inflicted please
>> tell me what I did wrong. Git pull finds no updates that look related.
>> 
> 
> Do you strictly follow the recommend ordering that does kernel
> (builds/)installation that /usr/src/UPDATING has for:
> 
> QUOTE
> To rebuild everything and install it on the current system.
>        -----------------------------------------------------------
>        # Note: sometimes if you are running current you gotta do more than
>        # is listed here if you are upgrading from a really old current.
> 
>        <make sure you have good level 0 dumps>         [2]
>        make buildworld
>        <make sure any needed PORTS_MODULES are set>    [1]
>        make buildkernel KERNCONF=YOUR_KERNEL_HERE
>        make installkernel KERNCONF=YOUR_KERNEL_HERE
>        <reboot in single user>                         [3]
>        etcupdate -p                                    [5]
>        make installworld
>        etcupdate -B                                    [4]
>        make delete-old                                 [6]
>        <reboot>
> END QUOTE
> 
> Note the installation of the updated kernel and the
> reboot to have that kernel in use before the
> installation of the new world. That is what allows
> the installation of and (partial) operation of the
> new world to use new system calls.
> 
> After rebooting again, only code from the new world
> is in use, as all processes are started from scratch.
> 
> Starting the new world without having booted the
> new kernel would not have any new system calls
> (or new changes) available for use by the new world.
> 
> Note also the new kernel boot is for "single user"
> mode. This minimizes what of the old world is active
> during the new world's installation, leaving fewer
> chances for conflicts.
> 
> 
> As for what commits are related to the changed system
> calls:
> 
> Sat, 31 May 2025
> . . .
>    • git: 2761de0832c1 - main - kern: add extended errors support Konstantin Belousov 
>    • git: 09dfe066f00c - main - kernel: copyout extended errors to userspace and add exterrctl(2) to control it Konstantin Belousov 
>    • git: 92b393c0d287 - main - libsys: export exterrctl symbol Konstantin Belousov 
>    • git: d995dc937a3c - main - vm/vm_mmap.c: add two examples of using exterrors Konstantin Belousov 
>    • git: 7212b3734593 - main - kinfo_proc: report address of extended kernel error structure Konstantin Belousov 
>    • git: b9c8a07d4dd9 - main - C runtime: enable extended error reporting from kernel Konstantin Belousov 
>    • git: 98af94cae78a - main - sysconf(3): add _SC_UEXTERR_LEN, the max length of the extended error string Konstantin Belousov 
>    • git: a56fe703c206 - main - Provide user interface to retrieve reported extended errors Konstantin Belousov 
>    • git: 8e8d3068dcbe - main - amd64 GENERIC: enable bloating kernel with ext errors strings Konstantin Belousov 
>    • git: bfe9e97a23af - main - Regen Konstantin Belousov 
>    • git: 970a71e1ef9a - main - Rename BLOW_KERNEL_WITH_EXTERR to BLOAT_KERNEL_WITH_EXTERR Konstantin Belousov
> 
> Quoting Konstantin Belousov:
> 
> "The UPDATING way of update must be followed to letter with the exterr feature."
> 

FYI: looks like another ABI breaking change in this area was
committed today:

Konstantin Belousov <kib_at_FreeBSD.org>
Date: Tue, 03 Jun 2025 04:07:37 UTC 
The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=765150dd4d05425f599c5ec0543071d77f399ea5

commit 765150dd4d05425f599c5ec0543071d77f399ea5
Author: Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2025-06-03 02:45:47 +0000
Commit: Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2025-06-03 02:47:38 +0000

struct uexterror: add flags, bump exterr version

This is ABI breaking change, which only affects HEAD, and which result
is non-functional extended error reporting for older world (with
previous uexterror layout/previous version). No intention of providing
the compat shims.

===
Mark Millard
marklmi at yahoo.com