Ships a /etc/default/grub.d/45_debug-misc.cfg configuration file, that removes quiet, loglevel=0 and debugfs=off from the GRUB_CMDLINE_LINUX_DEFAULT variable and adds debug=vc to the kernel boot parameter to enable verbose output during the initial ramdisk boot phase.

Undo debugging related sysctl settings by package security-misc.

Enables persistent systemd journal log.

Disables /lib/systemd/coredump.conf.d/disable-coredumps.conf by package security-misc by creating a symlink from /etc/systemd/coredump.conf.d/disable-coredumps.conf to /dev/null. debian/debug-misc.links

Disables panic-on-oops, remove-system.map by package security-misc.

config-package-dev hide /etc/sysctl.d/30_silent-kernel-printk.conf which kernel.printk to default as if security-misc would not have lowered verbosity.

Configure systemd getty service to not clear tty. /lib/systemd/system/[email protected]/30_debug-misc.conf

Coredumps are enabled. /etc/security/limits.d/40_debug-misc.conf

Coredumps may contain important information such as encryption keys or passwords. Package security-misc disables coredumps. Package debug-misc re-enables coredumps.

Contains a helper tool to cause a segfault for testing purposes. segfault-build creates segfault-run. Running segfault-run results in segfault-run terminating with a segfault. This is useful to test if coredump files are being generated when an application crashes. /usr/sbin/segfault-build /usr/share/debug-misc/segfault.c

For better usability, to ease debugging in case of issues.

For better security, this package should only be installed on specific machines that require debugging. Unfortunately, security and debugging are conflicting optimization goals.

1. Download the APT Signing Key.

wget https://www.kicksecure.com/derivative.asc

Users can check the Signing Key for better security.

2. Add the APT Signing Key..

sudo cp ~/derivative.asc /usr/share/keyrings/derivative.asc

3. Add the derivative repository.

echo "deb [signed-by=/usr/share/keyrings/derivative.asc] https://deb.kicksecure.com bullseye main contrib non-free" | sudo tee /etc/apt/sources.list.d/derivative.list

4. Update your package lists.

sudo apt-get update

5. Install debug-misc.

sudo apt-get install debug-misc

Can be build using standard Debian package build tools such as:

dpkg-buildpackage -b

See instructions.

NOTE: Replace generic-package with the actual name of this package debug-misc.

• A) easy, OR
• B) including verifying software signatures

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