From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Martin Kepplinger <martin.kepplinger@puri.sm>,
Kalle Valo <kvalo@codeaurora.org>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 057/108] rsi: fix null pointer dereference during rsi_shutdown()
Date: Sat, 11 Apr 2020 19:08:52 -0400 [thread overview]
Message-ID: <20200411230943.24951-57-sashal@kernel.org> (raw)
In-Reply-To: <20200411230943.24951-1-sashal@kernel.org>
From: Martin Kepplinger <martin.kepplinger@puri.sm>
[ Upstream commit 16bbc3eb83728c03138191a5d23d84d38175fa26 ]
Appearently the hw pointer can be NULL while the module is loaded and
in that case rsi_shutdown() crashes due to the unconditional dereference.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/rsi/rsi_91x_sdio.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c
index 1bebba4e85273..5d6143a551877 100644
--- a/drivers/net/wireless/rsi/rsi_91x_sdio.c
+++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c
@@ -1468,12 +1468,15 @@ static void rsi_shutdown(struct device *dev)
struct rsi_91x_sdiodev *sdev =
(struct rsi_91x_sdiodev *)adapter->rsi_dev;
struct ieee80211_hw *hw = adapter->hw;
- struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n");
- if (rsi_config_wowlan(adapter, wowlan))
- rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
+ if (hw) {
+ struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
+
+ if (rsi_config_wowlan(adapter, wowlan))
+ rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
+ }
if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
adapter->priv->bt_adapter) {
--
2.20.1
next prev parent reply other threads:[~2020-04-11 23:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200411230943.24951-1-sashal@kernel.org>
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 019/108] ath10k: use kzalloc to read for ath10k_sdio_hif_diag_read Sasha Levin
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 020/108] mwifiex: set needed_headroom, not hard_header_len Sasha Levin
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 023/108] ath10k: fix not registering airtime of 11a station with WMM disable Sasha Levin
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 043/108] mt76: fix handling full tx queues in mt76_dma_tx_queue_skb_raw Sasha Levin
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 047/108] rtw88: 8822c: update power sequence to v16 Sasha Levin
2020-04-11 23:08 ` Sasha Levin [this message]
2020-04-11 23:08 ` [PATCH AUTOSEL 5.4 060/108] mt76: mt7603: fix input validation issues for powersave-filtered frames Sasha Levin
2020-04-11 23:09 ` [PATCH AUTOSEL 5.4 068/108] ath10k: start recovery process when read int status fail for sdio Sasha Levin
2020-04-11 23:09 ` [PATCH AUTOSEL 5.4 077/108] brcmfmac: Fix driver crash on USB control transfer timeout Sasha Levin
2020-04-11 23:09 ` [PATCH AUTOSEL 5.4 078/108] brcmfmac: Fix double freeing in the fmac usb data path Sasha Levin
2020-04-11 23:09 ` [PATCH AUTOSEL 5.4 079/108] brcmfmac: fix the incorrect return value in brcmf_inform_single_bss() Sasha Levin
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