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 37D0A3451C1; Wed, 3 Dec 2025 16:11:19 +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=1764778279; cv=none; b=EdsUzhU3cCvXEHuyOZ+DX7TliyoIh+WLwHdmFW7B8dzw7nOhNh+hNK+8yr9E2sZOWKExKeEonLv5ptpyhgo9BQZKcVfeOm4fA7/l14o4/B6+I68wjfzuOG9JRBdLNWKJgFPNUeeNiaIyL/iLj1norna1j04CMu5v2ceh8I4MIIQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764778279; c=relaxed/simple; bh=aU1rOZJDMMYKJa/nDgNHrjYnqy6jbizy06YuQbeIzck=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lDl19Q6w8TAaqX7d5V6jeN2j7NT491KRP4QOLFgSKig8j0f0eyg/lNOZv31HrH9etWn76gAe6tiK+8gNLCbuEB7Ir5PPrEgSeMPvVaHwqOgb+oTcOVZFISqymIXE+IRbaFq62hSCLIUakxQ3PpU0wGvTEomLl3qglSWi7z4t/ek= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TKYtx1/D; 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="TKYtx1/D" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9259BC4CEF5; Wed, 3 Dec 2025 16:11:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764778279; bh=aU1rOZJDMMYKJa/nDgNHrjYnqy6jbizy06YuQbeIzck=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TKYtx1/DimpigI0eiWnNH/wx+6kjE53rDNdpDPA6xoj10m0FdDMaPhnrmZYhURQgj E8DUPVQwSygecoovgrHfHAXoJYouDKOgff+IHudON1XJ6kQBrDB4ylvxUscyjYC0Gy 6EBP8MZbD34iFjDTl5fxVUQyoujOcxSnnex4TV+c= 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 5.15 297/392] s390/ctcm: Fix double-kfree Date: Wed, 3 Dec 2025 16:27:27 +0100 Message-ID: <20251203152425.097283590@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251203152414.082328008@linuxfoundation.org> References: <20251203152414.082328008@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: 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 be03cb123ef48..cde36a3b6c03c 100644 --- a/drivers/s390/net/ctcm_mpc.c +++ b/drivers/s390/net/ctcm_mpc.c @@ -698,7 +698,6 @@ 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