From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>,
syzbot+7716dbc401d9a437890d@syzkaller.appspotmail.com,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 05/35] mac80211: remove warning in ieee80211_get_sband()
Date: Mon, 21 Jun 2021 13:52:30 -0400 [thread overview]
Message-ID: <20210621175300.735437-5-sashal@kernel.org> (raw)
In-Reply-To: <20210621175300.735437-1-sashal@kernel.org>
From: Johannes Berg <johannes.berg@intel.com>
[ Upstream commit 0ee4d55534f82a0624701d0bb9fc2304d4529086 ]
Syzbot reports that it's possible to hit this from userspace,
by trying to add a station before any other connection setup
has been done. Instead of trying to catch this in some other
way simply remove the warning, that will appropriately reject
the call from userspace.
Reported-by: syzbot+7716dbc401d9a437890d@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20210517164715.f537da276d17.Id05f40ec8761d6a8cc2df87f1aa09c651988a586@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/ieee80211_i.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index be40f6b16199..a83f0c2fcdf7 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1445,7 +1445,7 @@ ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (WARN_ON_ONCE(!chanctx_conf)) {
+ if (!chanctx_conf) {
rcu_read_unlock();
return NULL;
}
--
2.30.2
next parent reply other threads:[~2021-06-21 17:55 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210621175300.735437-1-sashal@kernel.org>
2021-06-21 17:52 ` Sasha Levin [this message]
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 06/35] mac80211_hwsim: drop pending frames on stop Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 07/35] cfg80211: call cfg80211_leave_ocb when switching away from OCB Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 12/35] net: ipv4: Remove unneed BUG() function Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 13/35] mac80211: drop multicast fragments Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 14/35] net: ethtool: clear heap allocations for ethtool function Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 15/35] inet: annotate data race in inet_send_prepare() and inet_dgram_connect() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 16/35] ping: Check return value of function 'ping_queue_rcv_skb' Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 17/35] net: annotate data race in sock_error() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 18/35] inet: annotate date races around sk->sk_txhash Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 19/35] net/packet: annotate data race in packet_sendmsg() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 20/35] net: phy: dp83867: perform soft reset and retain established link Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 22/35] net: caif: fix memory leak in ldisc_open Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 23/35] net/packet: annotate accesses to po->bind Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 24/35] net/packet: annotate accesses to po->ifindex Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 25/35] r8152: Avoid memcpy() over-reading of ETH_SS_STATS Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 26/35] sh_eth: " Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 27/35] r8169: " Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 29/35] net: qed: Fix memcpy() overflow of qed_dcbx_params() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 30/35] mac80211: reset profile_periodicity/ema_ap Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 31/35] mac80211: handle various extensible elements correctly Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 34/35] net: ll_temac: Add memory-barriers for TX BD access Sasha Levin
2021-06-21 17:53 ` [PATCH AUTOSEL 5.10 35/35] net: ll_temac: Avoid ndo_start_xmit returning NETDEV_TX_BUSY Sasha Levin
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