Re: [PATCH] vt: fix memory overlapping when deleting chars in the buffer

[Greg Kroah-Hartman]

On Mon, Jun 27, 2022 at 07:04:17PM +0800, Yangxi Xiang wrote:
> > What commit does this fix?  how was this tested?
> 
> This bug is triggered by running a dynamic analysis on the kernel,
> with the help of sanitizer to observe this bug. This memory
> overlapping copy can cause data corruption when scr_memcpyw is
> optimized to memcpy because memcpy does not ensure its behavior if
> the destination buffer overlaps with the source buffer.

And what commit id does this fix, or has it always been broken?

thanks,

greg k-h