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 9548649620; Mon, 13 Apr 2026 16:28:35 +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=1776097715; cv=none; b=r/E/8uEP78U1CiQA0mTLNQkkF+LdEvGwtRNKacusqoZ3KFsllf0E/lS+S8dOO+2zVtb0RO4yeLCwHm70f169/Rp8lEmW6eUzmMegV1e2LDCp4J601DAGWAiXJchrFb1nSx2Gq642vUHeQzU1BTKx3i4dclDxOhAFCwKw0cCnE28= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776097715; c=relaxed/simple; bh=rD82cV8IyQOa2AUnn/T3havtlqgFUMo/R9lLfPJ4Dug=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DWKQPbpv7P/k3CiZ5ybQ5gtYep07w3N8zkheqHgQVb5zPUwVmFjLwl7FHe5aNj3JMOjfYyZdmi7P/IJF8QvQzMz709JIJ566AI+uoBJSCLc/RmdfLTYJTDPtBINvthuDxbF/OaDVFsk/S3gGrharx916BUaM00YnLo+Xz89GqK0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ue8CLawy; 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="Ue8CLawy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27CFAC2BCAF; Mon, 13 Apr 2026 16:28:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776097715; bh=rD82cV8IyQOa2AUnn/T3havtlqgFUMo/R9lLfPJ4Dug=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ue8CLawyhidX3pDX+eRXLPbTgv2c1RLndXp6ZRP0tuDtR9ckq2z4FKL74LbdthdYP eBndn458k/xWERGH+Dx3VmdU4BH9Klue/Luu1ss+oUN3WIFz5vSjdd8rBPu7klRhEN OKYSHC2aAGcwcXggjNdFN6hJNvE2sJJqlqvZLzcA= 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 5.15 245/570] wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down Date: Mon, 13 Apr 2026 17:56:16 +0200 Message-ID: <20260413155839.646448299@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155830.386096114@linuxfoundation.org> References: <20260413155830.386096114@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-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 65fa39275f73f..92c62d36e9525 100644 --- a/net/wireless/pmsr.c +++ b/net/wireless/pmsr.c @@ -642,6 +642,7 @@ 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