On Wed, Oct 21, 2015 at 5:30 AM, Rasmus Villemoes <[email protected]> wrote: > Following "lib/vsprintf.c: expand field_width to 24 bits", let's add a > test to see that we now actually support bitmaps with 65536 bits. > > Cc: Maurizio Lombardi <[email protected]> > Cc: Kees Cook <[email protected]> > Cc: Tejun Heo <[email protected]> > Signed-off-by: Rasmus Villemoes <[email protected]>
Acked-by: Kees Cook <[email protected]> -Kees > --- > lib/test_printf.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/lib/test_printf.c b/lib/test_printf.c > index 8fca007d9bcd..19fa411dba78 100644 > --- a/lib/test_printf.c > +++ b/lib/test_printf.c > @@ -12,6 +12,7 @@ > #include <linux/slab.h> > #include <linux/string.h> > > +#include <linux/bitmap.h> > #include <linux/socket.h> > #include <linux/in.h> > > @@ -312,6 +313,20 @@ struct_clk(void) > } > > static void __init > +large_bitmap(void) > +{ > + const int nbits = 1 << 16; > + unsigned long *bits = kcalloc(BITS_TO_LONGS(nbits), sizeof(long), > GFP_KERNEL); > + if (!bits) > + return; > + > + bitmap_set(bits, 1, 20); > + bitmap_set(bits, 60000, 15); > + test("1-20,60000-60014", "%*pbl", nbits, bits); > + kfree(bits); > +} > + > +static void __init > bitmap(void) > { > DECLARE_BITMAP(bits, 20); > @@ -330,6 +345,8 @@ bitmap(void) > bitmap_fill(bits, 20); > test("fffff|fffff", "%20pb|%*pb", bits, 20, bits); > test("0-19|0-19", "%20pbl|%*pbl", bits, 20, bits); > + > + large_bitmap(); > } > > static void __init > -- > 2.6.1 > -- Kees Cook Chrome OS Security -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
