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

[Eric Valette]

On 14/03/2025 15:34, Felix Zielcke wrote:
> Am Freitag, dem 14.03.2025 um 15:19 +0100 schrieb Eric Valette:
>>
>> /dev/nvme0n1p4  326475776 328153087   1677312   819M Windows recovery
>> environment
>>
> So it looks like it's one of the ntfs CVE fixes.
> But I'm just guessing.
> 
> [...]
>>>
>>
>> Unfortunately not or I did not issue the right command.
>>
> 
> 
> Please try:
> 
> # export DEBUGINFOD_URLS="https://debuginfod.debian.net"
> # gdb /usr/bin/grub-mount
> (gdb) r /dev/nvme0n1p4 /var/lib/os-prober/mount

gdb /usr/bin/grub-mount
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Reading symbols from /usr/bin/grub-mount...
Reading symbols from 
/usr/lib/debug/.build-id/a4/4eb327453281223d7a470fba5fcb2c3bfc6409.debug...
(gdb) r /dev/nvme0n1p4 /var/lib/os-prober/mount
Starting program: /usr/bin/grub-mount /dev/nvme0n1p4 
/var/lib/os-prober/mount

This GDB supports auto-downloading debuginfo from the following URLs:
   <https://debuginfod.debian.net>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.
Downloading 168.02 K separate debug info for 
/lib/x86_64-linux-gnu/libdevmapper.so.1.02.1
Downloading 266.90 K separate debug info for 
/lib/x86_64-linux-gnu/libfuse3.so.3
[Thread debugging using libthread_db enabled] 

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Downloading 257.60 K separate debug info for 
/lib/x86_64-linux-gnu/libselinux.so.1
Downloading 877.45 K separate debug info for 
/lib/x86_64-linux-gnu/libudev.so.1
Downloading 720.26 K separate debug info for 
/lib/x86_64-linux-gnu/libpcre2-8.so.0
Downloading 47.80 K separate debug info for 
/lib/x86_64-linux-gnu/libcap.so.2
Downloading 2.72 K separate debug info for 
/root/.cache/debuginfod_client/7f82570fce4801a3d7bc8ea76c0bb1e21c889059/debuginfo
/usr/bin/grub-mount: error: cannot find `/var/lib/os-prober/mount': No 
such file or directory.
[Inferior 1 (process 22136) exited with code 01]

dpkg -S os-prober
os-prober: /usr/share/os-prober
os-prober: /usr/lib/os-prober/newns
os-prober: /usr/share/doc/os-prober/README
os-prober: /usr/lib/os-prober
os-prober: /usr/share/os-prober/common.sh
os-prober: /usr/share/doc/os-prober
grub-common: /etc/grub.d/30_os-prober
os-prober: /usr/share/doc/os-prober/changelog.gz
os-prober: /usr/share/doc/os-prober/TODO
os-prober: /var/lib/os-prober
os-prober: /usr/share/doc/os-prober/copyright
os-prober: /usr/bin/os-prober
eric at pink-floyd3:~$ ls /var/lib/os-prober
labels
eric at pink-floyd3:~$ ls /var/lib/os-prober/labels
/var/lib/os-prober/labels

-- 
Eric Valette