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 DE89E3164A1; Mon, 15 Dec 2025 11:28:47 +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=1765798130; cv=none; b=PPNeoOr49zEyzBUow9S0kYoXLO9I6drngLAVlQJUtSI8jdQAPe5qFO+L/736be3y1jVa43xSc73k9+dJpKbj8n6woHyFP/kmQQcg/DBi+nwRZm4VEemuXVGYgl3zr/YlGTamcnPnEqW87qe34AzdJU39iuDhlJNhNJ20A+3UdjU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765798130; c=relaxed/simple; bh=m0V/cnewFtRPozuIbq4jItuR/qlWmFbUG2Zcdn5dQhU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BXFOSp4/7iU6QiqAd8oOZSrJo64T0gDT8oDEgXlrTp8ra/B2N3Y23GVb0tjeTRBs7ICX+D1rvE6EaYjnVfvEJkGybAvk2cjFmhpMz54toe8yvagQZoRWu99RtpgYWIiVb3x2tiNtEbA1xyNAPcxl6WZPaTLTzLgUQyubgt0y1iM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e3NUkMnd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e3NUkMnd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15773C4CEF5; Mon, 15 Dec 2025 11:28:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765798127; bh=m0V/cnewFtRPozuIbq4jItuR/qlWmFbUG2Zcdn5dQhU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=e3NUkMndJ9WNv2akLYSWu52xv7E4xRF5aRC/pOuhgTXDJfTNwzD+HYT0urPnx8ju/ Xx1gwvbpVnXGP8mY3i6XlBqG06WqZKgdVDy2byhOtaQKSJHWHaBwNBJCksgjH1zNoe XtAZ2xdj4g5lXO5qQR8sReyk1ilq1VWuojEhPTp4KVtaoBCmlaZBH0eJmdqe4F77rp Bi4l7YI308aD+J14dr+FyRlalvW1EhSFfcpVxeAQ8cHXlPIy2O1hanhW6aY15M/OEj oFK4UueP2qaqPrOS/uPGiZ66fMEnVGM0+clQJp8Tv7apJicsXQPBDYeISQEfL6pZii 7eOUYKIAgzYUA== Message-ID: <624c7965-54cd-4897-9883-c8f4e79d3ca7@kernel.org> Date: Mon, 15 Dec 2025 12:28:39 +0100 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] NFC: Fix error handling in nfc_genl_dump_targets To: Ma Ke , davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, aloisio.almeida@openbossa.org, lauro.venancio@openbossa.org, sameo@linux.intel.com, linville@tuxdriver.com, johannes@sipsolutions.net Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, stable@vger.kernel.org References: <20251214131726.5353-1-make24@iscas.ac.cn> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 14/12/2025 14:17, Ma Ke wrote: > nfc_genl_dump_targets() increments the device reference count via > nfc_get_device() but fails to decrement it properly. nfc_get_device() > calls class_find_device() which internally calls get_device() to > increment the reference count. No corresponding put_device() is made > to decrement the reference count. > > Add proper reference count decrementing using nfc_put_device() when > the dump operation completes or encounters an error, ensuring balanced > reference counting. > > Found by code review. NAK, you completely ignore reviewers and send the same. That's not acceptable. Best regards, Krzysztof