From mboxrd@z Thu Jan 1 00:00:00 1970 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 62E1CC433DB for ; Thu, 4 Mar 2021 23:35:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24C4E64FE3 for ; Thu, 4 Mar 2021 23:35:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232317AbhCDXfR (ORCPT ); Thu, 4 Mar 2021 18:35:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229592AbhCDXfR (ORCPT ); Thu, 4 Mar 2021 18:35:17 -0500 Received: from mail-ot1-x332.google.com (mail-ot1-x332.google.com [IPv6:2607:f8b0:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C1A6C061574 for ; Thu, 4 Mar 2021 15:35:16 -0800 (PST) Received: by mail-ot1-x332.google.com with SMTP id j8so46954otc.0 for ; Thu, 04 Mar 2021 15:35:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=lNaca+9r1gRcSq04wJ/07YdJf7lYCV1lxu+6s6o0cM8=; b=ctcvSvTrn0/f33Y1kC8ZkdOIXZt9/B9Fxq+OgKX//aUvAIxEsdoEzxezyzwbu9/ACA WF4qRTpg3FHi7Tpc14KqI6NOZeeyl7/KMVtlws8WZmidtDRHPCNa+ap75ii2G5yVGtHm N8Z3xDrYHqewVF6h4MUEsZrg7ZO4gttpgtNhJMFbUItCJSi1gxbcuch+14z/PaHE4G9H 8W3VL57jhAtBuOdvHJij8ubcR6aigu4xVDNjxR/wRzV7JtUg76sHD10Ba3GtFrch1pnA 1auh5qDkMM0Xcz8QvhztWmbNsIYZPLSgmzyEoAy5v9VB+w6FXuzpJMmGU+598XfmFtyU cwpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=lNaca+9r1gRcSq04wJ/07YdJf7lYCV1lxu+6s6o0cM8=; b=NCMKRegijL2rSL0T3HMvgrui3YvFCgWebQvsLLV1Y9Zef8qey+SYTRB4eMnfN2kIrG aiRDC8VjVjQXqr7tPDRCzajhLcVqnePu16aAG4l0QdvA86RDAHI+numFaJwwzyaLNLnc RN0QDoX8YbGMVfB42XxT7r/Ichi1vSV4pBCSNzjMKdCVuBJkSh3FZaHwNb8w2lFrYoUd DucAnnLrdQiu7MF35kaavYtHpmgs7pjWN25ovPpEsOldwl6PJGCAX5u1BYc+RYV1FSTm 3GAOUNQt1hvcWEalLelD13ev/KxIa9lcF2qZbuebAayoQ5TIsbXnC2sT/b1P7AzEt+R3 PLvw== X-Gm-Message-State: AOAM531uoavgkdN9uTXhUuaxR8Vo5m6t3FhViMO/Va4umvYQj2puXuAa aXzxjREd5+iUqujC1sYgxQ8= X-Google-Smtp-Source: ABdhPJxTsVY8BsnmBpA1HatHQ6MwLhDBKnBfVq5P+IiALOG8LCXXGfAa1nxHelnA3jiCViXxPJi8IA== X-Received: by 2002:a9d:340b:: with SMTP id v11mr5553744otb.284.1614900915601; Thu, 04 Mar 2021 15:35:15 -0800 (PST) Received: from x1c.localdomain (192-241-58-140.ip.ctc.biz. [192.241.58.140]) by smtp.gmail.com with ESMTPSA id z32sm207211ota.81.2021.03.04.15.35.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Mar 2021 15:35:15 -0800 (PST) From: Hsuan-Chi Kuo To: keescook@chromium.org Cc: hsuanchikuo@gmail.com, Andy Lutomirski , Will Drewry , linux-kernel@vger.kernel.org Subject: [PATCH] seccomp: Fix resetting filter count at seccomp_sync_threads() Date: Thu, 4 Mar 2021 17:37:08 -0600 Message-Id: <20210304233708.420597-1-hsuanchikuo@gmail.com> X-Mailer: git-send-email 2.30.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The desired behavior is to set the caller's filter count to thread's. Signed-off-by: Hsuan-Chi Kuo --- kernel/seccomp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/seccomp.c b/kernel/seccomp.c index 1d60fc2c99..3dde1aa173 100644 --- a/kernel/seccomp.c +++ b/kernel/seccomp.c @@ -597,7 +597,7 @@ static inline void seccomp_sync_threads(unsigned long flags) smp_store_release(&thread->seccomp.filter, caller->seccomp.filter); atomic_set(&thread->seccomp.filter_count, - atomic_read(&thread->seccomp.filter_count)); + atomic_read(&caller->seccomp.filter_count)); /* * Don't let an unprivileged task work around -- 2.30.1