Debug symbols not resolved in valgrind

Description:

When running apps via valgrind, e.g. gnome-shell, glibc missing debug symbols, though I have debug packages installed.

All the other debug symbols are resolved in valgrind by installing the appropriate *-debug packages.

Additional info:

glibc 2.39+r52+gf8e4623421-1
glibc-debug 2.39+r52+gf8e4623421-1

Steps to reproduce:

Running gnome-shell via valgrind as recommended here:

https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/main/docs/building-and-running.md?ref_type=heads#running-under-valgrind-with-a-full-session

I have ??? indicating missing something in glibc package:

==192020== 16,384 bytes in 1 blocks are definitely lost in loss record 21,673 of 21,810
==192020==    at 0x4842788: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==192020==    by 0x4D5374A: g_malloc (gmem.c:100)
==192020==    by 0x4D0F185: UnknownInlinedFun (gquark.c:65)
==192020==    by 0x4D0F185: UnknownInlinedFun (glib-init.c:421)
==192020==    by 0x4D0F185: UnknownInlinedFun (glib-init.c:410)
==192020==    by 0x4D0F185: glib_init_ctor (glib-init.c:563)
==192020==    by 0x40052E6: call_init (dl-init.c:74)
==192020==    by 0x40052E6: call_init (dl-init.c:26)
==192020==    by 0x40053DC: _dl_init (dl-init.c:121)
==192020==    by 0x401C79F: ??? (in /usr/lib/ld-linux-x86-64.so.2)

==192505== 16,384 bytes in 1 blocks are definitely lost in loss record 25,087 of 25,377
==192505==    at 0x4842788: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==192505==    by 0x4D5374A: g_malloc (gmem.c:100)
==192505==    by 0x4D0F185: UnknownInlinedFun (gquark.c:65)
==192505==    by 0x4D0F185: UnknownInlinedFun (glib-init.c:421)
==192505==    by 0x4D0F185: UnknownInlinedFun (glib-init.c:410)
==192505==    by 0x4D0F185: glib_init_ctor (glib-init.c:563)
==192505==    by 0x40052E6: call_init (dl-init.c:74)
==192505==    by 0x40052E6: call_init (dl-init.c:26)
==192505==    by 0x40053DC: _dl_init (dl-init.c:121)
==192505==    by 0x401C79F: ??? (in /usr/lib/ld-linux-x86-64.so.2)