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From:   Sasha Levin <Alexander.Levin@microsoft.com>
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        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Luca Coelho <luciano.coelho@intel.com>,
        Johannes Berg <johannes.berg@intel.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 214/219] mac80211: remove BUG() when interface
 type is invalid
Thread-Topic: [PATCH AUTOSEL for 4.9 214/219] mac80211: remove BUG() when
 interface type is invalid
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Date:   Sat, 3 Mar 2018 22:30:01 +0000
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From: Luca Coelho <luciano.coelho@intel.com>

[ Upstream commit c7976f5272486e4ff406014c4b43e2fa3b70b052 ]

In the ieee80211_setup_sdata() we check if the interface type is valid
and, if not, call BUG().  This should never happen, but if there is
something wrong with the code, it will not be caught until the bug
happens when an interface is being set up.  Calling BUG() is too
extreme for this and a WARN_ON() would be better used instead.  Change
that.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 net/mac80211/iface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index a7aa54f45e19..fa7d757fef95 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1520,7 +1520,7 @@ static void ieee80211_setup_sdata(struct ieee80211_su=
b_if_data *sdata,
 		break;
 	case NL80211_IFTYPE_UNSPECIFIED:
 	case NUM_NL80211_IFTYPES:
-		BUG();
+		WARN_ON(1);
 		break;
 	}
=20
--=20
2.14.1