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 9AFCD1DE8BE; Tue, 26 Aug 2025 14:01:25 +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=1756216885; cv=none; b=fmRsYLzVe7AEYtFlxVX+haalAquwCirQd0ijjM5aQmB0vigp2UupdtY/29QaQL1sn60wUYFzKSjBaLza8JsHWDzqYUFapvtrm39AafT3xiRD83S6tlJ/CHsfDBmOyppBUs28QsAdqjn3wiXY7M25dz6VJrVFngbal3yY3kl7dEI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216885; c=relaxed/simple; bh=PLykwFO3ThDJMlt3RBuefqGN0PDM8LxDMv5ceB4AflA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mIL9v4G1u/PNX8IP0Rv96/0nUPduqBaDCaJeHbYAqsg6+jFx2JkGP1XJbJ3tRxe9YxJmVHuQJjcfbCMzVd8FUTfkes3teW8wrONIC5Y33myd2cRTEYbNwTSXz8UkE5GR/LOPziBHfnABqfnlDUZbhDO9792lSZlaTyNZMGqDQu4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GqnR8DA3; 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="GqnR8DA3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B7A5C4CEF1; Tue, 26 Aug 2025 14:01:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216885; bh=PLykwFO3ThDJMlt3RBuefqGN0PDM8LxDMv5ceB4AflA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GqnR8DA3cqmu4zUkTmMekv7l8DIxM+K0te8wNGWz6QNzcJCJG1NQxLygs/sYdo4/C UlpuXN0PZmj0Y+bQ3AeGouoYD1LXDQpvRoD6AjQ+lmzJwQuraTmMQMPDPldVfzjmMf 9+Mc85hasco+pcaktvt7z61lSq2+sd9na1wBdGA8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Miaoqian Lin Subject: [PATCH 5.15 580/644] most: core: Drop device reference after usage in get_channel() Date: Tue, 26 Aug 2025 13:11:11 +0200 Message-ID: <20250826111000.904237993@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 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: Miaoqian Lin commit b47b493d6387ae437098112936f32be27f73516c upstream. In get_channel(), the reference obtained by bus_find_device_by_name() was dropped via put_device() before accessing the device's driver data Move put_device() after usage to avoid potential issues. Fixes: 2485055394be ("staging: most: core: drop device reference") Cc: stable Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20250804082955.3621026-1-linmq006@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/most/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/most/core.c +++ b/drivers/most/core.c @@ -538,8 +538,8 @@ static struct most_channel *get_channel( dev = bus_find_device_by_name(&mostbus, NULL, mdev); if (!dev) return NULL; - put_device(dev); iface = dev_get_drvdata(dev); + put_device(dev); list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) { if (!strcmp(dev_name(&c->dev), mdev_ch)) return c;