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Bug#888109: cdrom: mdadm gets segfault when creating RAID in preseeded instalation

Package: cdrom
Severity: important


I found strange behavior in preseeded Debian 9.3 instalator (9.1 is affected too). I need to create own RAID configuration, but when creating fifth RADI volume, mdadm is segfaulted and instalation is aborted.

Bug is not related to specific hardware -- same is on virtual machine in qemu and physical HW. Bug is same with new, empty discs or on discs with partitions from previous try.

When I try to create RAID by hands, it is not problem, even in instalator console:

mdadm --create /dev/md4 --raid-devices 2 --level 1 /dev/vda7 /dev/vdb7

This create RAID with no errors...

(it is visible in appended logs)

Have a nice day, Michal Heppler

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE=cs (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Attachment: install_logs.tar.gz
Description: application/gzip

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