From patchwork Tue Apr 14 14:32:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Peter_M=C3=BCller?= X-Patchwork-Id: 2964 Return-Path: Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384 client-signature ECDSA (P-384) client-digest SHA384) (Client CN "mail01.haj.ipfire.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by web04.haj.ipfire.org (Postfix) with ESMTPS id 491nyh3V8Xz3yC0 for ; Tue, 14 Apr 2020 14:33:00 +0000 (UTC) Received: from mail02.haj.ipfire.org (mail02.haj.ipfire.org [172.28.1.201]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) client-signature ECDSA (P-384)) (Client CN "mail02.haj.ipfire.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mail01.ipfire.org (Postfix) with ESMTPS id 491nyf61YGz1Qm; Tue, 14 Apr 2020 14:32:58 +0000 (UTC) Received: from mail02.haj.ipfire.org (localhost [127.0.0.1]) by mail02.haj.ipfire.org (Postfix) with ESMTP id 491nyf0d3kz2yj5; Tue, 14 Apr 2020 14:32:58 +0000 (UTC) Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384 client-signature ECDSA (P-384) client-digest SHA384) (Client CN "mail01.haj.ipfire.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mail02.haj.ipfire.org (Postfix) with ESMTPS id 491nyc1JFXz2xFP for ; Tue, 14 Apr 2020 14:32:56 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (Client did not present a certificate) by mail01.ipfire.org (Postfix) with ESMTPSA id 491nyZ2sPSzRp for ; Tue, 14 Apr 2020 14:32:53 +0000 (UTC) DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=ipfire.org; s=202003ed25519; t=1586874775; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=kt3RcBf+87rHWzchJK+RxPkGW6keCi2uo2rTtgw6y1g=; b=68lS3h+un0wVj9Jd5BSM60hwkxcCNXYJtcct+XNw3S8XC8t7VJmzIyy6QNzY4HWqkGt0OQ W7ml4n7wajd7ZHBw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ipfire.org; s=202003rsa; t=1586874775; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=kt3RcBf+87rHWzchJK+RxPkGW6keCi2uo2rTtgw6y1g=; b=uZJv3ypUBy2pXsbLVwbBGWsECYdW1STK32qFAAWPDZar2GIlnxT6U1PmePbK+Du7gUevh3 0E9LVXHrc2hLGB2s/5OGbkbjCAzv9++ChC+KF4j8CDq+5A8Q4qA35TrD99iBPpnRLJv6O2 GrwBCdBW/4K99OpRAqaaNCS0DoqexAU7aV7DLbELXwXGHrRh0uDSp4oDKSPD947MQLe7Uy YsQEKB/szfd714C8P82Zn5TbbaILn12QzXipmOrPvIUkgyRFtBynzq5asnp4zMGq9NpNAs gPzkLOPdDyyAWxudQkvockZfm9xTSvMKxoq9i2AnMiAF2fOWvRjxYkGZ8M3blQ== To: "IPFire: Development-List" From: =?utf-8?q?Peter_M=C3=BCller?= Subject: [PATCH] kernel: enable page poisoning on x86_64 Message-ID: Date: Tue, 14 Apr 2020 16:32:47 +0200 MIME-Version: 1.0 Content-Language: en-US Authentication-Results: mail01.ipfire.org; auth=pass smtp.mailfrom=peter.mueller@ipfire.org X-BeenThere: development@lists.ipfire.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: IPFire development talk List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: development-bounces@lists.ipfire.org Sender: "Development" This is already active on i586 and prevents information leaks from freed data. Cc: Arne Fitzenreiter Signed-off-by: Peter Müller --- config/kernel/kernel.config.x86_64-ipfire | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire index b16d13504..f6819859d 100644 --- a/config/kernel/kernel.config.x86_64-ipfire +++ b/config/kernel/kernel.config.x86_64-ipfire @@ -6387,7 +6387,9 @@ CONFIG_DEBUG_KERNEL=y # # CONFIG_PAGE_EXTENSION is not set # CONFIG_DEBUG_PAGEALLOC is not set -# CONFIG_PAGE_POISONING is not set +CONFIG_PAGE_POISONING=y +# CONFIG_PAGE_POISONING_NO_SANITY is not set +CONFIG_PAGE_POISONING_ZERO=y # CONFIG_DEBUG_PAGE_REF is not set # CONFIG_DEBUG_RODATA_TEST is not set # CONFIG_DEBUG_OBJECTS is not set