Bug#1100470: grub2-common: Segfault messages when running update-grub

[Felix Zielcke]

Am Freitag, dem 14.03.2025 um 14:43 +0100 schrieb Eric Valette:
> coredumpctl info
>             PID: 16667 (grub-mount)
>             UID: 0 (root)
>             GID: 0 (root)
>          Signal: 11 (SEGV)
>       Timestamp: Fri 2025-03-14 14:35:13 CET (6min ago)
>    Command Line: grub-mount /dev/nvme0n1p4 /var/lib/os-prober/mount

What filesystem is on /dev/nvme0n1p4? 
It's not in your /proc/mounts from the initial bug report.

[...]
>    Size on Disk: 665K
>         Message: Process 16667 (grub-mount) of user 0 dumped core.
> 
>                  Module libudev.so.1 from deb systemd-257.4-3.amd64
>                  Stack trace of thread 16667:
>                  #0  0x000055817ba01e34 n/a (/usr/bin/grub-mount +
> 0x29e34)
>                  #1  0x000055817ba0223b n/a (/usr/bin/grub-mount +
> 0x2a23b)
>                  #2  0x000055817ba02659 n/a (/usr/bin/grub-mount +
> 0x2a659)
>                  #3  0x000055817ba03635 n/a (/usr/bin/grub-mount +
> 0x2b635)
>                  #4  0x000055817ba494a0 n/a (/usr/bin/grub-mount +
> 0x714a0)
>                  #5  0x000055817b9dea5f n/a (/usr/bin/grub-mount +
> 0x6a5f)
>                  #6  0x00007f5fdd7e3ca8 __libc_start_call_main 
> (libc.so.6 + 0x29ca8)
>                  #7  0x00007f5fdd7e3d65 __libc_start_main_impl 
> (libc.so.6 + 0x29d65)
>                  #8  0x000055817b9decc1 n/a (/usr/bin/grub-mount +
> 0x6cc1)
>                  ELF object binary architecture: AMD x86-64
> lines 1-31/31 (END)
> 

Please enable the unstable-debug repo and install the
grub-common-dbgsym package from it:

In /etc/apt/sources.list:

  deb http://deb.debian.org/debian-debug/ unstable-debug main

Then the backtrace is hopefully useful.