From nobody Sun Oct 5 21:42:52 2025 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 C93E686338; Wed, 30 Jul 2025 13:13:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753881213; cv=none; b=GIOvDkpLJHzFX5OrwXNAHN6jczYe/DSSiSRN/amKSy7D7hnbJkTt6PL1Cgj0haEuF7Oe9yKnm9QOnE6bPNcL9Rk1akNx7NFAOACkEf0uTySWqx4KU62T4N4yhE7pav9PMEd1Vl1IHnVh7RsNESDIhhT/TjvgDV5vrMeJfOM/KGI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753881213; c=relaxed/simple; bh=8gsKNoaRf2wBX1FEn+/nFc6lS1oUbhLbg6mIU1IDR4k=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=XQtqxgNaf4iDN8cXyftP8T8chCFzHvXKwuznfKBQ0Ep6XUOYevNG62w19Y6uEva744UsRhbrqoSnpvQau3WGp/LljALULXh+2ykCGmqhhmSVDTkRBsvwFltgoVtVjrS1l3Q9KEY/jIXUXCf/ne3goJ5gu6BxxcPd0UyHlqLuTns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: f91aa8ca6d4611f0b29709d653e92f7d-20250730 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NO_NAME, HR_CTE_8B, HR_CTT_MISS HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME, HR_SJ_DIGIT_LEN HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_EXISTED, SN_EXISTED SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD, CIE_GOOD_SPF GTI_FG_BS, GTI_RG_INFO, GTI_C_BU, AMN_T1, AMN_GOOD AMN_C_TI, AMN_C_BU, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.45,REQID:f2f1176d-f414-49da-a45a-d9022fafc130,IP:15, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-INFO: VERSION:1.1.45,REQID:f2f1176d-f414-49da-a45a-d9022fafc130,IP:15,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:0 X-CID-META: VersionHash:6493067,CLOUDID:66a4d24c57cf3838fd5d3428b1aa4dd7,BulkI D:2507302113258GOLYIXK,BulkQuantity:0,Recheck:0,SF:17|19|24|38|44|66|78|81 |82|102,TC:nil,Content:0|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:nil,QS :nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,A RC:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI X-UUID: f91aa8ca6d4611f0b29709d653e92f7d-20250730 X-User: duanchenghao@kylinos.cn Received: from localhost.localdomain [(116.128.244.171)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA) with ESMTP id 1056094278; Wed, 30 Jul 2025 21:13:24 +0800 From: Chenghao Duan To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, yangtiezhu@loongson.cn, hengqi.chen@gmail.com, chenhuacai@kernel.org Cc: martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, kernel@xen0n.name, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, bpf@vger.kernel.org, guodongtai@kylinos.cn, duanchenghao@kylinos.cn, youling.tang@linux.dev, jianghaoran@kylinos.cn, vincent.mc.li@gmail.com, geliang@kernel.org Subject: [PATCH v5 2/5] LoongArch: BPF: Update the code to rename validate_code to validate_ctx Date: Wed, 30 Jul 2025 21:12:54 +0800 Message-Id: <20250730131257.124153-3-duanchenghao@kylinos.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250730131257.124153-1-duanchenghao@kylinos.cn> References: <20250730131257.124153-1-duanchenghao@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Rename the existing validate_code() to validate_ctx() Factor out the code validation handling into a new helper validate_code() * validate_code is used to check the validity of code. * validate_ctx is used to check both code validity and table entry correctness. The new validate_code() will be used in subsequent changes. Co-developed-by: George Guo Signed-off-by: George Guo Signed-off-by: Chenghao Duan Reviewed-by: Hengqi Chen --- arch/loongarch/net/bpf_jit.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index fa1500d4a..7032f11d3 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -1180,6 +1180,14 @@ static int validate_code(struct jit_ctx *ctx) return -1; } =20 + return 0; +} + +static int validate_ctx(struct jit_ctx *ctx) +{ + if (validate_code(ctx)) + return -1; + if (WARN_ON_ONCE(ctx->num_exentries !=3D ctx->prog->aux->num_exentries)) return -1; =20 @@ -1288,7 +1296,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog = *prog) build_epilogue(&ctx); =20 /* 3. Extra pass to validate JITed code */ - if (validate_code(&ctx)) { + if (validate_ctx(&ctx)) { bpf_jit_binary_free(header); prog =3D orig_prog; goto out_offset; --=20 2.25.1