Re: [PATCH 1/3] kallsyms: don't leak address when symbol not found

From: Felix Fietkau
Date: Mon Dec 18 2017 - 04:55:43 EST

On 2017-12-18 00:53, Tobin C. Harding wrote:
> Currently if kallsyms_lookup() fails to find the symbol then the address
> is printed. This potentially leaks sensitive information. Instead of
> printing the address we can return an error, giving the calling code the
> option to print the address or print some sanitized message.
> Return error instead of printing address to argument buffer. Leave
> buffer in a sane state.
> Signed-off-by: Tobin C. Harding <me@xxxxxxxx>
I think there should be a way to keep the old behavior for debugging.

- Felix