On Mon, Feb 25, 2019 at 11:11 AM Borislav Petkov <[email protected]> wrote: > > This was caught while staring at the whole {set,get}_fs() machinery.
Heh.
You should probably have researched _when_ it became unused.
That seems to have happened in commit 5723aa993d83 ("x86: use the new
generic strnlen_user() function") which removed the single user from
the x86-32 version of strnlen_user(), which used to have
unsigned long mask = -__addr_ok(s);
in it.
Way back in 2012.
Ack.
Linus
