Re: git: 4bd01d6ae016 - main - fts: refactor to use fd-relative operations internally

On Mon, 10 Aug 2026, at 07:08, Don Lewis wrote:
> On  7 Aug, Don Lewis wrote:
>> On  4 Aug, Herbert J. Skuhra wrote:
>>> On Mon, 03 Aug 2026 21:13:08 +0200, Alan Somers wrote:
>>>> 
>>>> The branch main has been updated by asomers:
>>>> 
>>>> URL: https://cgit.FreeBSD.org/src/commit/?id=4bd01d6ae01632501b63438b8d9a401db9744a78
>>>> 
>>>> commit 4bd01d6ae01632501b63438b8d9a401db9744a78
>>>> Author:     Jitendra Bhati <bhatijitendra2022@gmail.com>
>>>> AuthorDate: 2026-06-12 17:07:55 +0000
>>>> Commit:     Alan Somers <asomers@FreeBSD.org>
>>>> CommitDate: 2026-08-03 19:12:28 +0000
>>>> 
>>>>     fts: refactor to use fd-relative operations internally
>>>>     
>>>>     Replace all _open() calls with _openat() in __fts_open(), fts_read(),
>>>>     and fts_children().  Replace statfs() with _fstatfs().
>>>>     
>>>>     Add fts_dirfd to struct _ftsent, set to the file descriptor of the
>>>>     parent directory. Callers can use openat(ent->fts_dirfd, ent->fts_name,
>>>>     ...) to access files safely without relying on fts_accpath, which
>>>>     enables programs in capability mode to open the files described by
>>>>     _ftsent.
>>>>     
>>>>     This is a preparatory change for fts_openat() which will allow callers
>>>>     to provide a pre-opened directory fd, enabling fts(3) traversal inside
>>>>     Capsicum capability mode.
>>>>     
>>>>     Mirror all fts_open() changes to fts_open_b().
>>>>     
>>>>     As a result of expanding _ftsend, publish new ELF symbol versions for
>>>>     fts_openat and related functions.
>>>>     
>>>>     Sponsored by:   Google LLC (GSoC 2026)
>>>>     Reviewed by:    asomers
>>>>     Pull Request:   https://github.com/freebsd/freebsd-src/pull/2303
>>>> ---
>>>>  include/fts.h               |    2 +
>>>>  lib/libc/gen/Makefile.inc   |    1 +
>>>>  lib/libc/gen/Symbol.map     |   18 +-
>>>>  lib/libc/gen/fts-compat15.c | 1355 +++++++++++++++++++++++++++++++++++++++++++
>>>>  lib/libc/gen/fts-compat15.h |   97 ++++
>>>>  lib/libc/gen/fts.3          |   18 +-
>>>>  lib/libc/gen/fts.c          |   49 +-
>>>>  7 files changed, 1519 insertions(+), 21 deletions(-)
>>> 
>>> This change seems to break poudriere:
>>> 
>>> [00:00:04] Recording filesystem state for prepkg...mtree: ./bin: No such file or directory
>>> [ERROR] Unhandled error!
>>> [00:00:04] Cleaning up
>>> [00:00:04] Unmounting file systems
>>> Exiting with status 1
>> 
>> I am seeing a different error with poudriere-devel:
>> 
>> [00:00:01] Starting jail CURRENTamd64-default
>> Updating /var/run/os-release done.
>> [00:00:02] Will build as nobody:nobody (65534:65534)
>> [00:00:03] Ports supports: FLAVORS SUBPACKAGES SELECTED_OPTIONS
>> [00:00:03] Acquiring build logs lock for CURRENTamd64-default... done
>> [00:00:03] Logs: /var/poudriere/data/logs/bulk/CURRENTamd64-default/2026-08-07_15h29m37s
>> [00:00:03] Loading MOVED for /var/poudriere/data/.m/CURRENTamd64-default/ref/usr/ports
>> [00:00:03] Gathering ports metadata
>> [00:00:03] Warning: (misc/freebsd-release-manifests): jexec: jail_attach(41): Operation not permitted
>> [00:00:03] Warning: (misc/freebsd-release-manifests): Error: Error looking up dependencies for misc/freebsd-release-manifests
>> [00:00:03] Warning: (ports-mgmt/pkg): jexec: jail_attach(41): Operation not permitted
>> [00:00:03] Warning: (ports-mgmt/portconfig): jexec: jail_attach(41): Operation not permitted
>> [00:00:03] Warning: (ports-mgmt/pkg): Error: Error looking up dependencies for ports-mgmt/pkg
>> [00:00:03] Warning: (ports-mgmt/portconfig): Error: Error looking up dependencies for ports-mgmt/portconfig
>> [00:00:03] Error: /usr/local/share/poudriere/bulk.sh:gather_port_vars:184:Fatal errors encountered gathering ports metadata
>> [CURRENTamd64-default] [2026-08-07_15h29m37s] [crashed] Time: 00:00:01
>> [00:00:03] Logs: /var/poudriere/data/logs/bulk/CURRENTamd64-default/2026-08-07_15h29m37s
>> 
>> 
>> When I upgraded my pkg build machine from
>> 3abd3d3cf3f034cb3d4250a95a8d6c41e72971ef to
>> 30ccf2f48c11e54fc0540510dcec7cd006a2c366, I found that poudriere-devel
>> started having jexec failures.  I suspected a kernel problem and started
>> to set things up to track down the offending commit.  I was surprised to
>> find that using the old world 3abd3d3cf3f034cb3d4250a95a8d6c41e72971ef
>> with the new 30ccf2f48c11e54fc0540510dcec7cd006a2c366 kernel did not
>> have this problem, which makes this look like a userland problem.
>> 
>> I did a git bisect to find the problematic commit by doing:
>>   make buildworld
>>   make installworld
>>   cd /usr/ports/ports-mgmt/poudriere-devel && make clean reinstall
>>   poudriere bulk -j CURRENTamd64 -C ports-mgmt/poudriere-devel
>> at each step.  I did the poudriere-devel build and reinstallation so
>> that it is propertly built against and linked to the newly installed
>> world.  The result of the final poudriere bulk determines whether the
>> iteration is a pass or a fail.  Any failures of the earlier steps are
>> handled as skips.
>> 
>> When I ran git bisect, I got this result:
>>   4bd01d6ae01632501b63438b8d9a401db9744a78 is the first 'bad' commit
>>   commit 4bd01d6ae01632501b63438b8d9a401db9744a78
>>   Author: Jitendra Bhati <bhatijitendra2022@gmail.com>
>>   Date:   Fri Jun 12 22:37:55 2026 +0530
>>  
>>       fts: refactor to use fd-relative operations internally
>> 
>> poudriere-devel runs jexec on the host and not in the jail.  I think the
>> permission error should only happen if jexec is run by a user other than
>> root.  I added some debug output to the poudriere internal scripts and
>> it looks like the uid is root.
>> 
>> I don't know why jexec would be sensitive to fts, since jexec does not
>> use it:
>> %ldd /usr/sbin/jexec
>> /usr/sbin/jexec:
>> 	libjail.so.1 => /lib/libjail.so.1 (0x3704d89e7000)
>> 	libutil.so.10 => /lib/libutil.so.10 (0x3704d8ae3000)
>> 	libc.so.7 => /lib/libc.so.7 (0x3704d9af8000)
>> 	libsys.so.7 => /lib/libsys.so.7 (0x3704da328000)
>> 	[vdso] (0x3704d7516000)
>> 
>> I see that a fix to fts was committed, but uupgrading to
>>   commit 2ae8976a3f6a7e4deb1905326145f5c2575264f4
>>   Author: Gleb Smirnoff <glebius@FreeBSD.org>
>>   Date:   Fri Aug 7 13:46:22 2026 -0700
>> 
>>       ocs_fc: return correct error code from ocs_hw_set_persistent_topology()
>> did not make a difference.
>> 
>> I'm stumped.
>
> If I go back one commit to 9590878fca68e62c63d607da73139698e204d0f0 on
> both the host and vm, and rebuild poudriere-devel to use the old fts,
> poudriere-devel is able to build ports.
>
> If I then, update the host world to
> 4bd01d6ae01632501b63438b8d9a401db9744a78 (there are no kernel changes
> at that step), poudriere-devel still works.  If I then rebuild and
> reinstall poudriere-devel so that it picks up the new fts API, I start
> seeing jexec errors again.
>
> I added some debug fprintfs to jail exec and its inputs look OK:
> [00:00:02] Loading MOVED for 
> /var/poudriere/data/.m/CURRENTamd64-default/ref/usr/ports
> [00:00:03] Gathering ports metadata
> [00:00:03] Warning: (ports-mgmt/poudriere-devel): jexec 
> CURRENTamd64-default jid=11 uid=0 euid=0
> [00:00:03] Warning: (misc/freebsd-release-manifests): jexec 
> CURRENTamd64-default jid=11 uid=0 euid=0
> [00:00:03] Warning: (misc/freebsd-release-manifests): jexec 
> jail_attach() errno=1
> [00:00:03] Warning: (misc/freebsd-release-manifests): jexec: 
> jail_attach(11): Operation not permitted
> [00:00:03] Warning: (ports-mgmt/pkg): jexec CURRENTamd64-default jid=11 
> uid=0 euid=0
> [00:00:03] Warning: (misc/freebsd-release-manifests): Error: Error 
> looking up dependencies for misc/freebsd-release-manifests
> [00:00:03] Warning: (ports-mgmt/pkg): jexec jail_attach() errno=1
> [00:00:03] Warning: (ports-mgmt/portconfig): jexec CURRENTamd64-default 
> jid=11 uid=0 euid=0
> [00:00:03] Warning: (ports-mgmt/pkg): jexec: jail_attach(11): Operation 
> not permitted
> [00:00:03] Warning: (ports-mgmt/portconfig): jexec jail_attach() errno=1
> [00:00:03] Warning: (ports-mgmt/portconfig): jexec: jail_attach(11): 
> Operation not permitted
> [00:00:03] Warning: (ports-mgmt/pkg): Error: Error looking up 
> dependencies for ports-mgmt/pkg
> [00:00:03] Warning: (ports-mgmt/portconfig): Error: Error looking up 
> dependencies for ports-mgmt/portconfig
> [00:00:03] Error: 
> /usr/local/share/poudriere/bulk.sh:gather_port_vars:184:Fatal errors 
> encountered gathering ports metadata
>
> but the call fo jail_attach() fails.

But does this also happen with 74bd6fb1eb028d15df407efb62628253dab90aa5? 
Have you tried a clean build?

The problem with the "too many open files" still exists. And now the main-weekly pkgbase is also affected.