mirror of https://github.com/hak5/openwrt-owl.git
eb02b887ff
This is a bug revealed in r41830.
First, the static variable `char nif[IFNAMSIZ]` of nl80211_phy2ifname()
would be zeroed out if the argument is "wlan0" or the like. This will
happen in the following call stack.
nl80211_get_scanlist("radio0", buf, len);
nl80211_phy2ifname("radio0") // return static var nif with content "wlan0"
nl80211_get_scanlist(nif, buf, len); // tail call
nl80211_get_mode(nif);
nl80211_phy2ifname(nif); // zero out nif
Later we try nl80211_ifadd("") which was supposed to create interface
"tmp.", but that won't happen because nl80211_msg() will put an invalid
ifidx 0 to the nlmsg.
Then iwinfo_ifup() and iwinfo_ifdown() would fail and happily
nl80211_get_scanlist() returned 0 and left *len undefined.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
SVN-Revision: 42151
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| arptables | ||
| comgt | ||
| conntrack-tools | ||
| curl | ||
| dante | ||
| ebtables | ||
| ifenslave | ||
| iftop | ||
| iperf | ||
| iproute2 | ||
| ipset | ||
| iptables | ||
| iputils | ||
| iw | ||
| iwcap | ||
| iwinfo | ||
| linux-atm | ||
| maccalc | ||
| owipcalc | ||
| resolveip | ||
| rssileds | ||
| tcpdump | ||
| uqmi | ||
| wireless-tools | ||
| xtables-addons | ||