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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Alexei Avshalom Lazar <ailizaro@codeaurora.org>,
        Maya Erez <merez@codeaurora.org>,
        Kalle Valo <kvalo@codeaurora.org>,
        Lee Jones <lee.jones@linaro.org>
Subject: [PATCH 4.19 37/40] wil6210: add general initialization/size checks
Date:   Mon, 20 Apr 2020 14:39:47 +0200
Message-Id: <20200420121506.939424790@linuxfoundation.org>
In-Reply-To: <20200420121444.178150063@linuxfoundation.org>
References: <20200420121444.178150063@linuxfoundation.org>
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From: Alexei Avshalom Lazar <ailizaro@codeaurora.org>

commit ac0e541ab2f2951845acee784ef487be40fb4c77 upstream.

Initialize unset variable, and verify that mid is valid.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/ath/wil6210/debugfs.c |    2 ++
 drivers/net/wireless/ath/wil6210/wmi.c     |    2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -991,6 +991,8 @@ static ssize_t wil_write_file_txmgmt(str
 	int rc;
 	void *frame;
 
+	memset(&params, 0, sizeof(params));
+
 	if (!len)
 		return -EINVAL;
 
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -2802,7 +2802,7 @@ static void wmi_event_handle(struct wil6
 
 		if (mid == MID_BROADCAST)
 			mid = 0;
-		if (mid >= wil->max_vifs) {
+		if (mid >= ARRAY_SIZE(wil->vifs) || mid >= wil->max_vifs) {
 			wil_dbg_wmi(wil, "invalid mid %d, event skipped\n",
 				    mid);
 			return;