nfs-utils on musl: ldd failure on installed .so

[Vaelatern]

Is this a new report?

Yes

System Info

Void 6.6.67_1 x86_64-musl GenuineIntel notuptodate rrrnDDFFFFFFFFFFFF

Package(s) Affected

nfs-utils libnfsidmap

Does a report exist for this bug with the project's home (upstream) and/or another distro?

No response

Expected behaviour

On glibc:

$ ldd /usr/lib/libnfsidmap/regex.so
        linux-vdso.so.1 (0x00007ffc5abab000)
        libc.so.6 => /usr/lib/libc.so.6 (0x00007fdadaa22000)
        /usr/lib64/ld-linux-x86-64.so.2 (0x00007fdadac3b000)

Actual behaviour

On muslc:

$ ldd /usr/lib/libnfsidmap/regex.so
	ldd (0x7f0f5f58f000)
	libc.so => ldd (0x7f0f5f58f000)
Error relocating /usr/lib/libnfsidmap/regex.so: nfsidmap_config_get: symbol not found
Error relocating /usr/lib/libnfsidmap/regex.so: nfs4_get_default_domain: symbol not found
Error relocating /usr/lib/libnfsidmap/regex.so: idmap_verbosity: symbol not found
Error relocating /usr/lib/libnfsidmap/regex.so: idmap_log_func: symbol not found

Steps to reproduce

This breaks my void-mklive workflows making dracut images of x86_64-musl with the nfs library installed. I remove the nfs library and it works again, so I've narrowed down my build problems to this library.

It seems consistently broken on musl, fixed on glibc. I've checked and it seems the libs are in fact compiled fresh on each build. Upgrading to 2.8.2 didn't help #53784

I've not yet looked at how it's actually being built to see what is broken there.

[slymattz]

Hi!

I can reproduce ACTUAL BEHAVIOR on a musl-based Void live system both for nfs-utils 2.7.1 and nfs-utils 2.8.2. Just for the record, there seems to be a similar report for Gentoo describing similar underlinking on musl.

[Vaelatern]

And this problem is also present on Alpine. @ncopa

Skimmed the build itself, it's heavily indirected Make.

[classabbyamp]

this also happens with nsswitch.so, static.so, and umich_ldap.so in the same dir

[classabbyamp]

can confirm it also happens on chimera, too

[classabbyamp]

ok, this isn't underlinking but dracut trying to find dependencies for something that should only be loaded as a plugin, not as a standalone library. reported to upstream: dracut-ng/dracut-ng#1087

[jozzsi]

Can somebody please help and test this speculative fix - dracut-ng/dracut-ng#1088 ?

[Vaelatern]

Attempting a test on the rig where I detected the problem for starters. It's a big one and unwieldy and I did it with a manual sed but I'll see if I get results.

[Vaelatern]

Negative @jozzsi

--- /usr/lib/dracut/modules.d/95nfs/module-setup.sh.bck 2025-01-05 07:52:19.142252800 +0000
+++ /usr/lib/dracut/modules.d/95nfs/module-setup.sh     2025-01-05 07:52:19.144252826 +0000
@@ -94,7 +94,7 @@
         echo "alias nfs4 nfs" > "$initdir"/etc/modprobe.d/nfs.conf
     fi

-    inst_libdir_file 'libnfsidmap_nsswitch.so*' 'libnfsidmap/*.so' 'libnfsidmap*.so*'
+    inst_libdir_file -o 'libnfsidmap_nsswitch.so*' 'libnfsidmap/*.so' 'libnfsidmap*.so*'

     _nsslibs=$(
         cat "$dracutsysrootdir"/{,usr/}etc/nsswitch.conf 2> /dev/null \

dracut-install: ERROR: 'ldd /var/tmp/dracut.Ju4kiT/initramfs/usr/lib/libnfsidmap/nsswitch.so' failed with 141
dracut-install: ERROR: 'ldd /var/tmp/dracut.Ju4kiT/initramfs/usr/lib/libnfsidmap/static.so' failed with 141
dracut-install: ERROR: 'ldd /var/tmp/dracut.Ju4kiT/initramfs/usr/lib/libnfsidmap/umich_ldap.so' failed with 127
dracut-install: ERROR: 'ldd /var/tmp/dracut.Ju4kiT/initramfs/usr/lib/libnfsidmap/regex.so' failed with 141

[jozzsi]

@Vaelatern Thanks for helping debugging this issue that probably has been there over 10 years.

I will need more help as I am not yet able to reproduce this environment in the dracut test suite.

1./ Can you please confirm that omitting nfs module (e.g. -o nfs on command line or omit_dracutmodules+=" nfs " in a dracut config file a workaround ? Does void-mklive needs nfs module to function properly ?

2./ Speculatively would commenting out the following line in dracut.sh resolve it/make a difference ?

#[[ "$dracutsysrootdir" ]] || [[ "$noexec" ]] || export DRACUT_RESOLVE_LAZY="1"  

The goal is to make sure that DRACUT_RESOLVE_LAZY is NOT set.

[Vaelatern]

1. Yes I can confirm that omitting nfs does work.

2. Where is this file?

[slymattz]

2. /usr/bin/dracut: Bourne-Again shell script, ASCII text executable. This file has exactly what @jozzsi wrote in line 1337.

[Vaelatern]

@jozzsi

--- /usr/bin/dracut.bck 2025-01-07 20:00:00.326868228 +0000
+++ /usr/bin/dracut     2025-01-07 20:00:00.329868267 +0000
@@ -1334,7 +1334,6 @@
     mkdir "$early_cpio_dir"
 fi

-[[ "$dracutsysrootdir" ]] || [[ "$noexec" ]] || export DRACUT_RESOLVE_LAZY="1"

 if [[ $print_cmdline ]]; then
     stdloglvl=0
dracut[I]: Executing: /usr/bin/dracut -N --zstd --add-drivers ahci --force-add "vmklive livenet autoinstaller" -
-omit systemd /boot/initrd-lts 6.1.114_2

...
dracut[I]: *** Including module: nfs ***
dracut-install: ERROR: failed to install '/lib/libnfsidmap/nsswitch.so:' for '/lib/libnfsidmap/nsswitch.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/nsswitch.so:' for '/lib/libnfsidmap/nsswitch.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/nsswitch.so:' for '/lib/libnfsidmap/nsswitch.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/nsswitch.so:' for '/lib/libnfsidmap/nsswitch.so'
dracut-install: ERROR: 'ldd /lib/libnfsidmap/nsswitch.so' failed with 127
dracut-install: ERROR: installing '/lib/libnfsidmap/nsswitch.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/regex.so:' for '/lib/libnfsidmap/regex.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/regex.so:' for '/lib/libnfsidmap/regex.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/regex.so:' for '/lib/libnfsidmap/regex.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/regex.so:' for '/lib/libnfsidmap/regex.so'
dracut-install: ERROR: 'ldd /lib/libnfsidmap/regex.so' failed with 127
dracut-install: ERROR: installing '/lib/libnfsidmap/regex.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/static.so:' for '/lib/libnfsidmap/static.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/static.so:' for '/lib/libnfsidmap/static.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/static.so:' for '/lib/libnfsidmap/static.so'
dracut-install: ERROR: 'ldd /lib/libnfsidmap/static.so' failed with 127
dracut-install: ERROR: installing '/lib/libnfsidmap/static.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/umich_ldap.so:' for '/lib/libnfsidmap/umich_ldap.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/umich_ldap.so:' for '/lib/libnfsidmap/umich_ldap.so'
dracut-install: ERROR: failed to install '/lib/libnfsidmap/umich_ldap.so:' for '/lib/libnfsidmap/umich_ldap.so'
dracut-install: ERROR: 'ldd /lib/libnfsidmap/umich_ldap.so' failed with 127
dracut-install: ERROR: installing '/lib/libnfsidmap/umich_ldap.so'
dracut-install: ERROR: failed to install '/usr/lib/libnfsidmap/nsswitch.so:' for '/usr/lib/libnfsidmap/nsswitch.
so'
dracut-install: ERROR: failed to install '/usr/lib/libnfsidmap/nsswitch.so:' for '/usr/lib/libnfsidmap/nsswitch.
so'
dracut-install: ERROR: failed to install '/usr/lib/libnfsidmap/nsswitch.so:' for '/usr/lib/libnfsidmap/nsswitch.
so'
dracut-install: ERROR: failed to install '/usr/lib/libnfsidmap/nsswitch.so:' for '/usr/lib/libnfsidmap/nsswitch.
so'
dracut-install: ERROR: 'ldd /usr/lib/libnfsidmap/nsswitch.so' failed with 127
....

and then...

...
dracut[E]: FAILED: /usr/lib/dracut/dracut-install -D /var/tmp/dracut.vx2Sf7/initramfs -a -l /lib/libnfsidmap/nsswitch.so /lib/libnfsidmap/regex.so /lib/libnfsidmap/static.so /lib/libnfsidmap/umich_ldap.so /lib/libnfsidmap.so /lib/libnfsidmap.so.1 /lib/libnfsidmap.so.1.0.0 /usr/lib/libnfsidmap/nsswitch.so /usr/lib/libnfsidmap/regex.so
/usr/lib/libnfsidmap/static.so /usr/lib/libnfsidmap/umich_ldap.so /usr/lib/libnfsidmap.so /usr/lib/libnfsidmap.so.1 /usr/lib/libnfsidmap.so.1.0.0
dracut[I]: *** Including module: nvmf ***
dracut[I]: *** Including module: resume ***
dracut[I]: *** Including module: rootfs-block ***
dracut[I]: *** Including module: terminfo ***
dracut[I]: *** Including module: udev-rules ***
dracut[I]: *** Including module: virtiofs ***
dracut[I]: *** Including module: usrmount ***
dracut[I]: *** Including module: base ***
dracut[I]: *** Including module: fs-lib ***
dracut[I]: *** Including module: img-lib ***
dracut[I]: *** Including module: shutdown ***
dracut[I]: *** Including modules done ***
dracut[I]: *** Installing kernel module dependencies ***
dracut[I]: *** Installing kernel module dependencies done ***
dracut[I]: *** Hardlinking files ***
dracut[I]: *** Hardlinking files done ***
dracut[I]: *** Generating early-microcode cpio image ***
dracut[I]: *** Constructing AuthenticAMD.bin ***
dracut[I]: *** Constructing GenuineIntel.bin ***
dracut[I]: *** Store current command line parameters ***
dracut[I]: *** Stripping files ***
dracut[I]: *** Stripping files done ***
dracut[I]: *** Creating image file '/boot/initrd-lts' ***

So it seems to operate while it shouts loudly about the plugins.

[jozzsi]

So it seems to operate while it shouts loudly about the plugins.

Thanks. We can try to detect musl (or ldd/ldconfig version/info) and do not set DRACUT_RESOLVE_LAZY. Is there a recommended way for void to do the detection ?

[Vaelatern]

ldd 2>&1 | grep musl looks to function. Not recommended but.

Maybe just unset it for the nfs module?

[jozzsi]

ldd 2>&1 | grep musl looks to function. Not recommended but.

Maybe just unset it for the nfs module?

Can you please help verifying this patch - dracut-ng/dracut-ng@7f2d93b

[Vaelatern]

@jozzsi Patch verified. It errors wildly and complains about errors, and failing but does successfully emit an image.