From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgjp3.qq.com (smtpbgjp3.qq.com [54.92.39.34]) (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 520DB1917CD for ; Fri, 8 May 2026 09:41:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.92.39.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778233291; cv=none; b=S1lHO7z3atLqtPt+R4+aCGO4R9uIvqbdOh6JnQIijc810ek5pJBmPypOZtnnffn1QtZLqzk5Zb4JSGoGQq8AqxiB3yc1XMJUIHmlEqKQ1/3tu/qE8UZkEAAu6K58a98Tn70haDTlss7IF7f9feCjNKTRhP7CCSfYOpzthN0C/P4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778233291; c=relaxed/simple; bh=4jeS72mzcXiKWCM4qsplVp0Mj/GkUB+dWdgIWGbnu9A=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=SQ4I8iHf7MnJ++csxOt3b/1AFbKDFMUpGU06d16OJWBSeMJ7rATQEq0ADHYZyDsaGaT/VG9fQzJWa3s/6uXg2Ml+RqAmxtLq+RtvZmvmYsTt6cnrtUADXg2Z7XA9q/KOL57CoH9VQJh1SXJ2m/8fsJhQMXBysoV8GakR8ILMuBg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uniontech.com; spf=pass smtp.mailfrom=uniontech.com; dkim=pass (1024-bit key) header.d=uniontech.com header.i=@uniontech.com header.b=jce/helr; arc=none smtp.client-ip=54.92.39.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uniontech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=uniontech.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=uniontech.com header.i=@uniontech.com header.b="jce/helr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uniontech.com; s=onoh2408; t=1778233218; bh=4jeS72mzcXiKWCM4qsplVp0Mj/GkUB+dWdgIWGbnu9A=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=jce/helrbjcIMssODjQAeGZdBT6aLJj/3n2pouP/vAiA2AZXVVl/UTXZ3HzReskyz zr1xgCdbHJBnsdUqHzwHYuqezQCnF1l6SS8qVlj+EN1S6Bm2KOOyxJlbkt4d+OnVJS ySRta1wGdIHGkuSivEn/UGBAt6k00/Il95G/T7C4= X-QQ-mid: zesmtpip2t1778233211t34cdd25a X-QQ-Originating-IP: FQcN7kuVy9bHc3lfSi+J4V6anHhvSK2RSUbQX2sz1PQ= Received: from localhost.localdomain ( [localhost]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 08 May 2026 17:40:09 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 1 X-BIZMAIL-ID: 17673215077824213955 EX-QQ-RecipientCnt: 11 From: Wentao Guan To: gregkh@linuxfoundation.org Cc: dhowells@redhat.com, guanwentao@uniontech.com, horms@kernel.org, jaltman@auristor.com, kuba@kernel.org, linux-afs@lists.infradead.org, marc.dionne@auristor.com, sashal@kernel.org, stable@kernel.org, stable@vger.kernel.org Subject: Re: Re: [PATCH RFC 6.6] rxrpc: Fix potential UAF after skb_unshare() failure Date: Fri, 8 May 2026 17:38:55 +0800 Message-Id: <20260508093855.1768013-1-guanwentao@uniontech.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <2026050805-chill-winking-91d5@gregkh> References: <2026050805-chill-winking-91d5@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpip:uniontech.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: MfVCm2vBFdjBo6pAmsKuo8BXpW5z11eUgpSL3EkfSvAB3bCQHl4mgZIY LxW4DZPH35nMbN2Ae2XMJNOjPx8BwgGu3QoiMWsaTgRiA6UTZqYkSo+wFNtgUf8Ht5g8L5c /egSB+9Ef27MsFlLz3stejFg52W6oSBUZziuY8GjwTSqyXZ93WWoIKEtlgMU40WdTbc+AvH ounZZWr+CGdFcQEdG/o0xaka9lFBW6altKc0YQzoJjmRVYe7aljehbz03RDlAzRYdYwNu1h 37aqOPkedA24kxdlWoF8VgV4/N4KUBDLsrQY8ACJMkVBNp+xBnvwP1Q7w/L9wc8nBqPNdeE BD9QNs1m8OqbVc+tuuiPtx1k+L5PnD7uV/bcnBoAWDT0ZRZOOZRuzKIDYTgxSBbsVJyF0ZD NInLeYZ6ICj+pTanwmWiMXvGfTMx0V499ZbXuP2dHY+f4Yc0CmjYUhhukiCWYi70sgn4oAE dEnBDTVGcmOkCFNL6cwBOzvR/fTjHkxMkA8qJEtqqdCpRBPDRFU/qw8LlGi8IFjiA498hd9 zmkuJg0daxjcD0N/yL/FNvj6D9UF8bg7VKTtvw9qWNxG6wG6ILEtvaQ/iVZEwsxmC2KMPPF wRIqf7enX9KSaHNQHMsLaZN39WAyTHd4ytxyY+8Vx038Ds8VX/WHzkr2dmb4pFcU81CgzFy 9hNpbhiO57HE0jnG2mvh08dam5AsL4GnXGKfZLTfQjixLFWaMvv0pWWmoetYWZ+Ea3jcr9q nC46br87KG7zMyA8JhE/L7JJM6zRXND6IFW8UDDx1OS6aHacfZNKz99jOZa5dYH1aYsDBi5 1nittBGJwI8z1Y3zng5nTIqKcs07iw09yhagekSpaUz+76BApcJKVg9lk/agayEWwuV9szL x/zQ6YKM0bPZ9YdLlfTjf6TfvcRELJvGybtp9PkgKWh095xjVWTHgPLdBdl3lCCI8ExzFSP BAGa2c91EPjxZTw0wsX/oN1BVLOI4QUjhVa43MtguphhhDTidLWijPx5Hu8PqIuzNiVUYeE 8PmsnWxbVGOXlbhLLi+uwbvUXgjO0EpB7tHMGDrg== X-QQ-XMRINFO: OD9hHCdaPRBwH5bRRRw8tsiH4UAatJqXfg== X-QQ-RECHKSPAM: 0 Hello, sashal change substituted rxrpc_skb_put_call_rx with rxrpc_skb_put_input which introduced from commit 9e3cccd176b5e ("rxrpc: Fix CPU time starvation in I/O thread"). It is hard to clean cherry-pick for 6.6, but possible for v6.12.y? Maybe the solution is ask for the subsystem maintainer to decide... BRs Wentao Guan