Shell causing system reboot after typing single letter "a"

[MinusPL]

When you type single letter a in shell it will cause immediate system reboot.
Only letter a causes this issue.

How to fix:

• Debug shell to see in which function program causes issue
• Check what parameters are passed to that function and how they differ when passing different parameters than "a"
• Debug syscall that should be called within that function
• Check syscall behaviour when it receives "a" and other parameters

Good first issue to solve. Basic programming and debugging knowledge required. Good for newcomers in project.

[MinusPL]

Also yet another clue for someone who might want to start their participation here. Problem is caused by other letters assigned to partitions. If we have also partitions B: C: etc it will also cause reboot with b and c.