From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D6343ACF03; Mon, 23 Mar 2026 13:54:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274097; cv=none; b=fGNFdXLX5U6NpmS791PPgRe+9jcVCmURf5VrT9cumxgwZQZsMgKlmXZw7/wiedKtPF/KvLJ3jGicv+KLWSP665cTKZbFcBakylr05lSuBdvLHxu9zpfa4J8Gi8JSToMkDf8Nia3IT6Q93RI7Dx4KVJevN1wByhrucfy8yEQcrDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274097; c=relaxed/simple; bh=IBDL3pxtGWgJkWRp5VMCOZE+QRMs8EzOqZO9YwLqhmM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Za/wFrF82/1F/O1WLJ2MgvCnCjEerMZWF34vtDk9Ry8w8vlD95okLQx8awHNbzsTgJ2WRqPI2L6A4OghOdPv+LtwQLgIlFW4QcG8ACrYl37eQW3TeU3oJBW5YofZl2wr+tA86fEGnNbDKDdZUb6hNYfc9c6QUGva/fZpP6eLlzM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=BNcD1ODu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="BNcD1ODu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3189C4CEF7; Mon, 23 Mar 2026 13:54:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774274097; bh=IBDL3pxtGWgJkWRp5VMCOZE+QRMs8EzOqZO9YwLqhmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BNcD1ODu3GdwkreZypWlMl6Q6u15LuHFU14VhyaXwP2Sq6ut66Deg9dw3bnZ5Bcoo gpTC6J1ABpHUWyJokIzuslQldq7OjkIXjckltMe9ZOt6wRBHn+rGPrHL6bF2/7FFVa +0mo/NBQt5Y373jvfwE+YJilBdZjPrvzbsU18zEU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Peddolla Harshavardhan Reddy , Johannes Berg , Sasha Levin Subject: [PATCH 6.19 107/220] wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down Date: Mon, 23 Mar 2026 14:44:44 +0100 Message-ID: <20260323134507.983119487@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134504.575022936@linuxfoundation.org> References: <20260323134504.575022936@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Peddolla Harshavardhan Reddy [ Upstream commit 6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 ] When the nl80211 socket that originated a PMSR request is closed, cfg80211_release_pmsr() sets the request's nl_portid to zero and schedules pmsr_free_wk to process the abort asynchronously. If the interface is concurrently torn down before that work runs, cfg80211_pmsr_wdev_down() calls cfg80211_pmsr_process_abort() directly. However, the already- scheduled pmsr_free_wk work item remains pending and may run after the interface has been removed from the driver. This could cause the driver's abort_pmsr callback to operate on a torn-down interface, leading to undefined behavior and potential crashes. Cancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down() before calling cfg80211_pmsr_process_abort(). This ensures any pending or in-progress work is drained before interface teardown proceeds, preventing the work from invoking the driver abort callback after the interface is gone. Fixes: 9bb7e0f24e7e ("cfg80211: add peer measurement with FTM initiator API") Signed-off-by: Peddolla Harshavardhan Reddy Link: https://patch.msgid.link/20260305160712.1263829-3-peddolla.reddy@oss.qualcomm.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/wireless/pmsr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c index a117f5093ca29..13801cf35e9fc 100644 --- a/net/wireless/pmsr.c +++ b/net/wireless/pmsr.c @@ -647,6 +647,7 @@ void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev) } spin_unlock_bh(&wdev->pmsr_lock); + cancel_work_sync(&wdev->pmsr_free_wk); if (found) cfg80211_pmsr_process_abort(wdev); -- 2.51.0