[src/trunk]: src/sys/dev/usb Use unsigned to avoid undefined behavior in ure_...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/328a3eab7e3c
branches:  trunk
changeset: 370081:328a3eab7e3c
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Fri Sep 16 07:34:36 2022 +0000

description:
Use unsigned to avoid undefined behavior in ure_uno_mcast(). Found by kUBSan.

diffstat:

 sys/dev/usb/if_ure.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 527ec044c03c -r 328a3eab7e3c sys/dev/usb/if_ure.c
--- a/sys/dev/usb/if_ure.c      Fri Sep 16 03:55:53 2022 +0000
+++ b/sys/dev/usb/if_ure.c      Fri Sep 16 07:34:36 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ure.c,v 1.57 2022/08/20 14:08:59 riastradh Exp $    */
+/*     $NetBSD: if_ure.c,v 1.58 2022/09/16 07:34:36 msaitoh Exp $      */
 /*     $OpenBSD: if_ure.c,v 1.10 2018/11/02 21:32:30 jcs Exp $ */
 
 /*-
@@ -30,7 +30,7 @@
 /* RealTek RTL8152/RTL8153 10/100/Gigabit USB Ethernet device */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.57 2022/08/20 14:08:59 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.58 2022/09/16 07:34:36 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -372,7 +372,7 @@
                        goto update;
                }
                h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN);
-               mchash[h >> 31] |= 1 << ((h >> 26) & 0x1f);
+               mchash[h >> 31] |= 1U << ((h >> 26) & 0x1f);
                ETHER_NEXT_MULTI(step, enm);
        }
        ETHER_UNLOCK(ec);