From patchwork Fri Apr 29 09:43:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Zhongjin X-Patchwork-Id: 12831688 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D3F5C433F5 for ; Fri, 29 Apr 2022 09:53:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tdiqP+I0cETaztmM3m/g6Bbwyjcf6NNwMHsMo1eRr/M=; b=2CjX43vHUNFLnL TNCKEW6qwWeCFSOYDxR52H2CVb8JP/ribQL7h8GBaYunJOyOeCKlvcDTYvkxwELPtrO+8h9wNSOqa 5j2QKis7U6vV3BFdk/l3PLzomaXDbxsqgb9meRaP1mJ0hq3poUw836SRmfUJydDKSuLF9iRh5O0ms pcIsWq29Qe7cbUsi87LbJv3H2VBtIaY3w/V6FduGV+6Sy8e6VemXauoFOtj0o75JT5jHL9WWUtrbp jzCdnN1DxxfWhTIwjEoi9L2sJ90tXCjZRULrmep47DlkdwM6GFqRkIlG0+Fc9j+2puY81SigJqdCk lGqAjCrPpdwZpvgSSMFg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkNHp-00AWW4-7A; Fri, 29 Apr 2022 09:51:41 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkNBm-00ATUA-6O for linux-arm-kernel@lists.infradead.org; Fri, 29 Apr 2022 09:45:28 +0000 Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KqSJc0pzRzhYpK; Fri, 29 Apr 2022 17:45:04 +0800 (CST) Received: from dggpemm500013.china.huawei.com (7.185.36.172) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 29 Apr 2022 17:45:14 +0800 Received: from ubuntu1804.huawei.com (10.67.175.36) by dggpemm500013.china.huawei.com (7.185.36.172) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 29 Apr 2022 17:45:14 +0800 From: Chen Zhongjin To: , , CC: , , , , , , , , , , , , , , Subject: [RFC PATCH v4 25/37] arm64: bpf: Skip validation of ___bpf_prog_run Date: Fri, 29 Apr 2022 17:43:43 +0800 Message-ID: <20220429094355.122389-26-chenzhongjin@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220429094355.122389-1-chenzhongjin@huawei.com> References: <20220429094355.122389-1-chenzhongjin@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.175.36] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500013.china.huawei.com (7.185.36.172) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220429_024526_460392_0C5B57D4 X-CRM114-Status: UNSURE ( 7.90 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There is a jump table encoded in ___bpf_prog_run and objtool-arm64 can't deal with it now. Skip validate it for arm64. Signed-off-by: Chen Zhongjin --- kernel/bpf/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 13e9dbeeedf3..d702f1d83176 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -2022,6 +2022,9 @@ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn) BUG_ON(1); return 0; } +#ifdef CONFIG_ARM64 +STACK_FRAME_NON_STANDARD(___bpf_prog_run); +#endif #define PROG_NAME(stack_size) __bpf_prog_run##stack_size #define DEFINE_BPF_PROG_RUN(stack_size) \