This is a note to let you know that I've just added the patch titled

wil6210: fix protection against connections during reset

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: wil6210-fix-protection-against-connections-during-reset.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Sun Mar 18 16:55:33 CET 2018

From: Hamad Kadmany qca_hkadmany@qca.qualcomm.com Date: Wed, 5 Apr 2017 14:58:08 +0300 Subject: wil6210: fix protection against connections during reset

From: Hamad Kadmany qca_hkadmany@qca.qualcomm.com

[ Upstream commit b819447dfc4bd120c9d6cd8521252d544fce8fe7 ]

Existing code that ignores connection events during reset flow will never take effect since it locks the same mutex taken by the reset flow.

In addition, in case of unsolicited disconnect events ignore those as well since device is about to get reset.

Signed-off-by: Hamad Kadmany qca_hkadmany@qca.qualcomm.com Signed-off-by: Maya Erez qca_merez@qca.qualcomm.com Signed-off-by: Kalle Valo kvalo@qca.qualcomm.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/ath/wil6210/wmi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -501,16 +501,16 @@ static void wmi_evt_connect(struct wil62 assoc_resp_ielen = 0; }

- mutex_lock(&wil->mutex); if (test_bit(wil_status_resetting, wil->status) || !test_bit(wil_status_fwready, wil->status)) { wil_err(wil, "status_resetting, cancel connect event, CID %d\n", evt->cid); - mutex_unlock(&wil->mutex); /* no need for cleanup, wil_reset will do that */ return; }

+ mutex_lock(&wil->mutex); + if ((wdev->iftype == NL80211_IFTYPE_STATION) || (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { if (!test_bit(wil_status_fwconnecting, wil->status)) { @@ -608,6 +608,13 @@ static void wmi_evt_disconnect(struct wi

wil->sinfo_gen++;

+ if (test_bit(wil_status_resetting, wil->status) || + !test_bit(wil_status_fwready, wil->status)) { + wil_err(wil, "status_resetting, cancel disconnect event\n"); + /* no need for cleanup, wil_reset will do that */ + return; + } + mutex_lock(&wil->mutex); wil6210_disconnect(wil, evt->bssid, reason_code, true); mutex_unlock(&wil->mutex);

Patches currently in stable-queue which might be from qca_hkadmany@qca.qualcomm.com are

queue-4.9/wil6210-fix-protection-against-connections-during-reset.patch