mac80211_hwsim: check that n_limits makes sense
Under certain circumstances, radios created via netlink could have n_limits be zero and no possible interface types, which makes no sense. Reject this early to prevent a WARN_ON() in cfg80211. Fixes: 99e3a44b ("mac80211_hwsim: allow setting iftype support") Reported-by: <syzbot+73fd8b0aa60c67fa4b60@syzkaller.appspotmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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8a7fa0c3
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