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wpa_supplicant: Fix overlapping memcpy on WPS interface addition

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I think this should fix the following valgrind complaint:

==1972== Source and destination overlap in memcpy(0x5181708, 0x5181708, 16)
==1972==    at 0x4A073BA: memcpy (mc_replace_strmem.c:602)
==1972==    by 0x45872B: wpas_wps_set_uuid (wps_supplicant.c:1116)
==1972==    by 0x4599EC: wpas_wps_update_config (wps_supplicant.c:1747)
==1972==    by 0x4C8DB0: wpa_supplicant_update_config (wpa_supplicant.c:3090)
==1972==    by 0x4C3E5E: wpa_supplicant_reload_configuration (wpa_supplicant.c:746)
==1972==    by 0x4B8B37: wpa_supplicant_ctrl_iface_process (ctrl_iface.c:4082)
==1972==    by 0x4BA39C: wpa_supplicant_ctrl_iface_receive (ctrl_iface_unix.c:168)
==1972==    by 0x4114D4: eloop_sock_table_dispatch_table (eloop.c:335)
==1972==    by 0x411541: eloop_sock_table_dispatch (eloop.c:352)
==1972==    by 0x41200D: eloop_run (eloop.c:766)
==1972==    by 0x4C8B43: wpa_supplicant_run (wpa_supplicant.c:3010)
==1972==    by 0x4D44AD: main (main.c:286)

Signed-hostap: Ben Greear <greearb@candelatech.com>
intended-for: hostap-1
This commit is contained in:
Ben Greear 2012-05-10 10:56:51 +03:00 committed by Jouni Malinen
parent ab28911dbf
commit 157cdad59f
1 changed files with 4 additions and 2 deletions
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6
wpa_supplicant/wps_supplicant.c
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@ -1113,8 +1113,10 @@ static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
while (first && first->next)
first = first->next;
if (first && first != wpa_s) {
os_memcpy(wps->uuid, wpa_s->global->ifaces->wps->uuid,
WPS_UUID_LEN);
if (wps != wpa_s->global->ifaces->wps)
os_memcpy(wps->uuid,
wpa_s->global->ifaces->wps->uuid,
WPS_UUID_LEN);
wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
"interface", wps->uuid, WPS_UUID_LEN);
} else {