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[209.132.180.67]) by mx.google.com with ESMTP id v17si2825519otq.250.2020.04.08.11.56.28; Wed, 08 Apr 2020 11:56:41 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@c-s.fr header.s=mail header.b=TVULhxZv; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730052AbgDHP6y (ORCPT + 99 others); Wed, 8 Apr 2020 11:58:54 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:48033 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729789AbgDHP6y (ORCPT ); Wed, 8 Apr 2020 11:58:54 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 48y88V6Pc2z9v1H5; Wed, 8 Apr 2020 17:58:50 +0200 (CEST) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=TVULhxZv; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id N7YYW_kaFFbe; Wed, 8 Apr 2020 17:58:50 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 48y88V4wYkz9v1H0; Wed, 8 Apr 2020 17:58:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1586361530; bh=SSLdeS8jfMrpRRTIZEZS17MpZ133uX84ktpTVXBDtCg=; h=From:Subject:To:Cc:Date:From; b=TVULhxZvLlDYNB5L6uZv00xd22hUZ2dA+0stSCVDIWeqMFFOnmHF9qflDH158mpSN 3MkOJzDLZ/cRuqeBETWhaD9sRiificlHsKZ2lC5SxMj8r0EktnzpcajifsJkJlwFZE m9CMIfSvL79Dx09zlBF9hnHk5L7ZlyDE1VZHV4VY= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id D0E168B7A0; Wed, 8 Apr 2020 17:58:51 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id N4nKQRmSnhYP; Wed, 8 Apr 2020 17:58:51 +0200 (CEST) Received: from pc16570vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 901FC8B78D; Wed, 8 Apr 2020 17:58:50 +0200 (CEST) Received: by pc16570vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 040AC6574F; Wed, 8 Apr 2020 15:58:49 +0000 (UTC) Message-Id: <2c50f3b1c9bbaa4217c9a98f3044bd2a36c46a4f.1586361277.git.christophe.leroy@c-s.fr> From: Christophe Leroy Subject: [PATCH] powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Wed, 8 Apr 2020 15:58:49 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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") Link: https://bugzilla.kernel.org/show_bug.cgi?id=207129 Reported-by: Signed-off-by: Christophe Leroy --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 05d20a8d6581..4444511f9bbc 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -771,6 +771,7 @@ 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 -- 2.25.0