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 2CBCF28C860; Thu, 27 Nov 2025 14:49:26 +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=1764254966; cv=none; b=S13xoNb4RYJA5LflUYKaA+xoJh8SGSYHCFC4y2Cph4UPYoiS2Os8dW8obCHpiQH/dBERRsyYqkN1wq6KYS+eyS/mFjWmotkgY2AaM8ObLQwJT4jJQCY7IO/mESJ2xhKYP9IZmhetEa8PGBSQNvnfsfSujjC2tENcRo8HX/LsUS8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764254966; c=relaxed/simple; bh=QE97FPPcCxsqMM6SmFhY9jA8NT5lo96rw8OUWdmNl3c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XMV8oT0gx0/MuOQYrvQF/uQ3/Xo24IKdQl1C/UYSbtdRVgNX4dKhusnJMPIXyWnzhZG85FvoCoKmKUrFt+YgeMiR/HxBKtPPWjtRC900Fhma23Frf61s0EXbFfcj2VMtW2h8b5lVmvmV2FYWXGdufB8xa5LUC18sfLDNQZyWar8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=s3d67Na1; 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="s3d67Na1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3F11C113D0; Thu, 27 Nov 2025 14:49:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764254966; bh=QE97FPPcCxsqMM6SmFhY9jA8NT5lo96rw8OUWdmNl3c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s3d67Na19iFo0978ukIJAs5uPR8dZht8Ew5XEsBJnjmL/ZloYf9lYGHzN0KfNrdfj s6qJlpgt8Rby4DskgTeKzsSTEWWRkBAbziwcrxRSj3ouPUvjYrpqvxuKThp5tG4aPG JEjnemvMb1DjeW01xW8yv9BunFE2r+5oXEgkiLJk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Aswin Karuvally , Aleksei Nikiforov , Simon Horman , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 47/86] s390/ctcm: Fix double-kfree Date: Thu, 27 Nov 2025 15:46:03 +0100 Message-ID: <20251127144029.549464000@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251127144027.800761504@linuxfoundation.org> References: <20251127144027.800761504@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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Aleksei Nikiforov [ Upstream commit da02a1824884d6c84c5e5b5ac373b0c9e3288ec2 ] The function 'mpc_rcvd_sweep_req(mpcginfo)' is called conditionally from function 'ctcmpc_unpack_skb'. It frees passed mpcginfo. After that a call to function 'kfree' in function 'ctcmpc_unpack_skb' frees it again. Remove 'kfree' call in function 'mpc_rcvd_sweep_req(mpcginfo)'. Bug detected by the clang static analyzer. Fixes: 0c0b20587b9f25a2 ("s390/ctcm: fix potential memory leak") Reviewed-by: Aswin Karuvally Signed-off-by: Aleksei Nikiforov Signed-off-by: Aswin Karuvally Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251112182724.1109474-1-aswin@linux.ibm.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/s390/net/ctcm_mpc.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/s390/net/ctcm_mpc.c b/drivers/s390/net/ctcm_mpc.c index 7a2f34a5e0e09..f8b3e3f7b8ce0 100644 --- a/drivers/s390/net/ctcm_mpc.c +++ b/drivers/s390/net/ctcm_mpc.c @@ -700,7 +700,6 @@ static void mpc_rcvd_sweep_req(struct mpcg_info *mpcginfo) grp->sweep_req_pend_num--; ctcmpc_send_sweep_resp(ch); - kfree(mpcginfo); return; } -- 2.51.0