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cfg80211: check reg_rule for NULL in handle_channel_custom() 

[ Upstream commit a7ee7d44b57c9ae174088e53a668852b7f4f452d ]

We may end up with a NULL reg_rule after the loop in
handle_channel_custom() if the bandwidth didn't fit,
check if this is the case and bail out if so.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200221104449.3b558a50201c.I4ad3725c4dacaefd2d18d3cc65ba6d18acd5dbfe@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johannes Berg 2020-02-21 10:44:50 +01:00 committed by Greg Kroah-Hartman
parent a6f7e69cfa
commit 079e9ad794
1 changed files with 1 additions and 1 deletions
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2
net/wireless/reg.c
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@ -2276,7 +2276,7 @@ static void handle_channel_custom(struct wiphy *wiphy,
break;
}
if (IS_ERR(reg_rule)) {
if (IS_ERR_OR_NULL(reg_rule)) {
pr_debug("Disabling freq %d MHz as custom regd has no rule that fits it\n",
chan->center_freq);
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {