From patchwork Mon May 31 13:15:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 450838 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C351FC47080 for ; Mon, 31 May 2021 14:58:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A675C613B6 for ; Mon, 31 May 2021 14:58:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231726AbhEaPAK (ORCPT ); Mon, 31 May 2021 11:00:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:50182 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234277AbhEaO5U (ORCPT ); Mon, 31 May 2021 10:57:20 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3981161401; Mon, 31 May 2021 14:00:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622469625; bh=fVze1sOW+uVpcq7m6Z0V+gR27zJMWKX5h7oXYmvbgNs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dUHB9J6+mRuIJHlfO0gNh099n6pldpIYUBcPfmyoo9RM7mxhpGorOY6jL7CQyOlDs lmRwQnZhlEenY6jCVOn8rXTdaa1FtAH8VVyArIT1tM/W5OprvZkbbLtoDm/jhpyb4F ELRzIw06wGm60ZT6Qj/sGZSw8CdPlOL4SzmVgN28= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yinjun Zhang , Simon Horman , Daniel Borkmann , Song Liu , Sasha Levin Subject: [PATCH 5.12 269/296] bpf, offload: Reorder offload callback prepare in verifier Date: Mon, 31 May 2021 15:15:24 +0200 Message-Id: <20210531130712.784254532@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130703.762129381@linuxfoundation.org> References: <20210531130703.762129381@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yinjun Zhang [ Upstream commit ceb11679d9fcf3fdb358a310a38760fcbe9b63ed ] Commit 4976b718c355 ("bpf: Introduce pseudo_btf_id") switched the order of resolve_pseudo_ldimm(), in which some pseudo instructions are rewritten. Thus those rewritten instructions cannot be passed to driver via 'prepare' offload callback. Reorder the 'prepare' offload callback to fix it. Fixes: 4976b718c355 ("bpf: Introduce pseudo_btf_id") Signed-off-by: Yinjun Zhang Signed-off-by: Simon Horman Signed-off-by: Daniel Borkmann Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20210520085834.15023-1-simon.horman@netronome.com Signed-off-by: Sasha Levin --- kernel/bpf/verifier.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 21247e49fe82..b186d852fe3d 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -12714,12 +12714,6 @@ int bpf_check(struct bpf_prog **prog, union bpf_attr *attr, if (is_priv) env->test_state_freq = attr->prog_flags & BPF_F_TEST_STATE_FREQ; - if (bpf_prog_is_dev_bound(env->prog->aux)) { - ret = bpf_prog_offload_verifier_prep(env->prog); - if (ret) - goto skip_full_check; - } - env->explored_states = kvcalloc(state_htab_size(env), sizeof(struct bpf_verifier_state_list *), GFP_USER); @@ -12743,6 +12737,12 @@ int bpf_check(struct bpf_prog **prog, union bpf_attr *attr, if (ret < 0) goto skip_full_check; + if (bpf_prog_is_dev_bound(env->prog->aux)) { + ret = bpf_prog_offload_verifier_prep(env->prog); + if (ret) + goto skip_full_check; + } + ret = check_cfg(env); if (ret < 0) goto skip_full_check;