Now you have buffer overflow in your solution.

Also your malloc and the stack-based array are not the same. The thing you malloced was not properly null-terminated (even though it had a null-terminator at the end) and contained trash which tripped the strcmp up.

Your solution is buggy in more than one way. The things you pass to strcmp are incorrect.

You also do not free the malloced memory.
And why even malloc any memory, this problem can be solved with no additional buffers :)

Please post your code following this: https://docs.codewars.com/training/troubleshooting#post-discourse

My bad, it looks like you were right there. Couldn't do this on the phone:

"jQoDqHaPXXYcTnORAxBbZRmNK" , 
"JQo Q apXx C n r XbBZ M k"

Where do you see that second Q in the first string? Not a kata issue.

P.S.: shouldn't reply without being totally awake.

In what language? What is your code?