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authorsam <sam@FreeBSD.org>2003-06-29 20:10:54 +0000
committersam <sam@FreeBSD.org>2003-06-29 20:10:54 +0000
commit1fb2cade2b075d1dddffb36b809b297aa5df90a5 (patch)
treeb71e40a72b8afafcd1bb00911dad8127e3e3f3d2 /sys/net80211
parent0269d0e1b4a66195bff5b7d89015c63b8c4bc82e (diff)
downloadFreeBSD-src-1fb2cade2b075d1dddffb36b809b297aa5df90a5.zip
FreeBSD-src-1fb2cade2b075d1dddffb36b809b297aa5df90a5.tar.gz
add safeguard against (bogus) null channel parameter
Diffstat (limited to 'sys/net80211')
-rw-r--r--sys/net80211/ieee80211.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/net80211/ieee80211.c b/sys/net80211/ieee80211.c
index 97654ba..1e0db22 100644
--- a/sys/net80211/ieee80211.c
+++ b/sys/net80211/ieee80211.c
@@ -197,10 +197,13 @@ ieee80211_chan2ieee(struct ieee80211com *ic, struct ieee80211_channel *c)
return c - ic->ic_channels;
else if (c == IEEE80211_CHAN_ANYC)
return IEEE80211_CHAN_ANY;
- else {
+ else if (c != NULL) {
if_printf(&ic->ic_if, "invalid channel freq %u flags %x\n",
c->ic_freq, c->ic_flags);
return 0; /* XXX */
+ } else {
+ if_printf(&ic->ic_if, "invalid channel (NULL)\n");
+ return 0; /* XXX */
}
}
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