systemd: musl ld loader wiped on upgrade

@calebccff did an apk upgrade -a on an existing install using the systemd master branch, and somehow the ld loader was deleted from the rootfs. This is bad. It might be due to apk-tools' /usr merge patches, but needs more debug

changed milestone to %initial systemd support

mentioned in merge request !5563 (merged)

By clayton craft on 2024-09-25T20:23:05

Seems like other libraries were likely nuked as well. will post-mortem and try to reproduce. This is surely a bug in apk-tools with /usr merge hacks.

By Caleb Connolly on 2024-09-25T21:37:42

I was able to reproduce this in a chroot by doing:

0. check out master_staging_systemd branch
1. pmbootstrap -y zap -a && pmbootstrap chroot -r
2. pmbootstrap aportgen --fork-alpine musl
3. bump pkgrel in tmp/musl/APKBUILD to something (doesn't matter)
4. pmbootstrap build --force musl
5. pmbootstrap chroot -r apk upgrade -aiU

full output

/ # apk upgrade -aiU
fetch http://mirror.postmarketos.org/postmarketos/staging/systemd/master/aarch64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/main/aarch64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/community/aarch64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/testing/aarch64/APKINDEX.tar.gz
The following packages will be upgraded:
  fribidi kmod kmod-libs libeditorconfig musl musl-utils py3-cairo py3-cairo-pyc
Need to download 248 KiB of packages.
After this operation, 4096 B of additional disk space will be used.
Do you want to continue [Y/n]? y
(1/8) Upgrading musl (1.2.5-r3 -> 1.2.5-r999)
musl-1.2.5-r999: [USRMERGE] Rewrite lib/ to usr/lib/
musl-1.2.5-r999: [USRMERGE] Rewrite lib/ld-musl-aarch64.so.1 to usr/lib/ld-musl-aarch64.so.1
musl-1.2.5-r999: [USRMERGE] Rewrite lib/libc.musl-aarch64.so.1 to usr/lib/libc.musl-aarch64.so.1
(2/8) Upgrading musl-utils (1.2.5-r3 -> 1.2.5-r999)
musl-utils-1.2.5-r999: [USRMERGE] Rewrite sbin/ to usr/bin/
musl-utils-1.2.5-r999: [USRMERGE] Rewrite sbin/ldconfig to usr/bin/ldconfig
(3/8) Upgrading kmod (33-r1 -> 33-r2)
kmod-33-r2: [USRMERGE] Rewrite bin/ to usr/bin/
kmod-33-r2: [USRMERGE] Rewrite bin/depmod to usr/bin/depmod
kmod-33-r2: [USRMERGE] Rewrite bin/insmod to usr/bin/insmod
kmod-33-r2: [USRMERGE] Rewrite bin/kmod to usr/bin/kmod
kmod-33-r2: [USRMERGE] Rewrite bin/lsmod to usr/bin/lsmod
kmod-33-r2: [USRMERGE] Rewrite bin/modinfo to usr/bin/modinfo
kmod-33-r2: [USRMERGE] Rewrite bin/modprobe to usr/bin/modprobe
kmod-33-r2: [USRMERGE] Rewrite bin/rmmod to usr/bin/rmmod
kmod-33-r2: [USRMERGE] Rewrite sbin/ to usr/bin/
kmod-33-r2: [USRMERGE] Rewrite sbin/depmod to usr/bin/depmod
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/depmod -> depmod
kmod-33-r2: [USRMERGE] Rewrite sbin/insmod to usr/bin/insmod
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/insmod -> insmod
kmod-33-r2: [USRMERGE] Rewrite sbin/lsmod to usr/bin/lsmod
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/lsmod -> lsmod
kmod-33-r2: [USRMERGE] Rewrite sbin/modinfo to usr/bin/modinfo
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/modinfo -> modinfo
kmod-33-r2: [USRMERGE] Rewrite sbin/modprobe to usr/bin/modprobe
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/modprobe -> modprobe
kmod-33-r2: [USRMERGE] Rewrite sbin/rmmod to usr/bin/rmmod
kmod-33-r2: [USRMERGE] ignoring redundant symlink usr/bin/rmmod -> rmmod
(4/8) Upgrading kmod-libs (33-r1 -> 33-r2)
(5/8) Upgrading fribidi (1.0.15-r0 -> 1.0.16-r0)
(6/8) Upgrading libeditorconfig (0.12.7-r0 -> 0.12.9-r0)
(7/8) Upgrading py3-cairo (1.26.1-r0 -> 1.27.0-r0)
(8/8) Upgrading py3-cairo-pyc (1.26.1-r0 -> 1.27.0-r0)
Executing busybox-1.36.1-r32.trigger
ERROR: busybox-1.36.1-r32.trigger: script exited with error 127
Executing kmod-33-r2.trigger
ERROR: kmod-33-r2.trigger: script exited with error 127
ERROR: mrtest_nag.sh: script exited with error 127
OK: 1690 MiB in 814 packages
/ # ls
sh: ls: not found
/ #

By clayton craft on 2024-09-26T11:01:56

mentioned in merge request pmbootstrap!2418 (merged)

By clayton craft on 2024-09-30T11:44:48

Fixed by !5661 (merged)

By jane400 on 2024-10-03T19:23:10

closed

mentioned in merge request !5563 (merged)