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usb(9): Assert ud_ifaces is null before we clobber it.

This commit is contained in:
riastradh 2023-04-11 08:50:07 +00:00
parent 4150aabca0
commit 0f8da8a15e
1 changed files with 4 additions and 2 deletions
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6
sys/dev/usb/usb_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: usb_subr.c,v 1.277 2022/04/06 22:01:45 mlelstv Exp $ */
/* $NetBSD: usb_subr.c,v 1.278 2023/04/11 08:50:07 riastradh Exp $ */
/* $FreeBSD: src/sys/dev/usb/usb_subr.c,v 1.18 1999/11/17 22:33:47 n_hibma Exp $ */
/*
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: usb_subr.c,v 1.277 2022/04/06 22:01:45 mlelstv Exp $");
__KERNEL_RCSID(0, "$NetBSD: usb_subr.c,v 1.278 2023/04/11 08:50:07 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
@ -867,6 +867,8 @@ usbd_set_config_index(struct usbd_device *dev, int index, int msg)
goto bad;
}
KASSERTMSG(dev->ud_ifaces == NULL, "ud_ifaces=%p", dev->ud_ifaces);
/* Allocate and fill interface data. */
nifc = cdp->bNumInterface;
if (nifc == 0) {