On Mon, Dec 18, 2017, at 20:55, Felix Fietkau wrote: > 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 <m...@tobin.cc> > I think there should be a way to keep the old behavior for debugging.
That was the intended use of EXPORT_SYMBOL(string_is_no_symbol); in patch 2 of this series. Then if debugging behaviour is adversely effected one could use string_is_no_symbol() on a case by case basis to add back in the original behaviour. Current suggestion on list is to remove this function. Do you have a use case in mind where debugging will break? We could add a fix to this series if so. Otherwise next version will likely drop string_is_no_symbol() thanks, Tobin.