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[23.128.96.18]) by mx.google.com with ESMTP id dn7si1148568edb.219.2020.06.17.19.53.33; Wed, 17 Jun 2020 19:53:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=hqAZa3JY; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728002AbgFRBJA (ORCPT + 99 others); Wed, 17 Jun 2020 21:09:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:34778 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727915AbgFRBIt (ORCPT ); Wed, 17 Jun 2020 21:08:49 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5774621BE5; Thu, 18 Jun 2020 01:08:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592442529; bh=ObCBeVgx/79ahaKVS2dysZmUhNkq33qM2M8gNwhURhk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hqAZa3JY6+3iBs1WUEu+kj5ezNaH2Pr1UvEiRtdPvn9CLZDyEEPqighMsyIdJMjmQ Ms5yU3gKSFZ5tnticLZPI7s/bTPmBX+7H53mtkmXFoXhIEbrPn5P1RicRNRQKZeTu0 qlZJD/NoCv7wnsBr0Sp0pzy5f9427zzinkcC2Nb4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Christophe Leroy , erhard_f@mailbox.org, Michael Ellerman , Sasha Levin , linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 5.7 032/388] powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT Date: Wed, 17 Jun 2020 21:02:09 -0400 Message-Id: <20200618010805.600873-32-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618010805.600873-1-sashal@kernel.org> References: <20200618010805.600873-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christophe Leroy [ Upstream commit edbadaf0671072298e506074128b64e003c5812c ] When CONFIG_KASAN is selected, the stack usage is increased. In the same way as x86 and arm64 architectures, increase THREAD_SHIFT when CONFIG_KASAN is selected. Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support") Reported-by: Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://bugzilla.kernel.org/show_bug.cgi?id=207129 Link: https://lore.kernel.org/r/2c50f3b1c9bbaa4217c9a98f3044bd2a36c46a4f.1586361277.git.christophe.leroy@c-s.fr Signed-off-by: Sasha Levin --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b29d7cb38368..51a074c26793 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -773,6 +773,7 @@ config THREAD_SHIFT range 13 15 default "15" if PPC_256K_PAGES default "14" if PPC64 + default "14" if KASAN default "13" help Used to define the stack size. The default is almost always what you -- 2.25.1