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[209.132.180.67]) by mx.google.com with ESMTP id r7si6688625oij.4.2020.03.31.09.04.35; Tue, 31 Mar 2020 09:05:10 -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=A7oUzo4C; 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 S1731256AbgCaQDm (ORCPT + 99 others); Tue, 31 Mar 2020 12:03:42 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:28535 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731229AbgCaQDj (ORCPT ); Tue, 31 Mar 2020 12:03:39 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 48sDdh3H0fz9twdW; Tue, 31 Mar 2020 18:03:36 +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=A7oUzo4C; 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 26lFx3Wyfu6f; Tue, 31 Mar 2020 18:03:36 +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 48sDdg74DBz9twdT; Tue, 31 Mar 2020 18:03:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1585670616; bh=aiA10aQwJFJQJHEkFc2uMUtIcc46uj6nfeI/8CpTGoY=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=A7oUzo4CVxadUNxnKXs4vHVifbb1KzzK3pfj7Xx3dhXX4e9KM6tRFmDIXrQxouCLi ZZMKA9OcP2Z0tL1Yfs7Xqlf/UTX+m4AmU4/9v6FWz1scBZrZT2kKh632RcmGjM3Q6p +dwiBh1WZYfsnBF69PE1dca7XaQgKmg3Wr1Xlh5I= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 99FBF8B868; Tue, 31 Mar 2020 18:03:37 +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 DlF0JSikage0; Tue, 31 Mar 2020 18:03:37 +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 5E0E78B752; Tue, 31 Mar 2020 18:03:37 +0200 (CEST) Received: by pc16570vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 4E9A3656AC; Tue, 31 Mar 2020 16:03:37 +0000 (UTC) Message-Id: <5dca36682383577a3c2b2bca4d577e8654944461.1585670437.git.christophe.leroy@c-s.fr> In-Reply-To: <1ae02b6637b87fc5aaa1d5012c3e2cb30e62b4a3.1585670437.git.christophe.leroy@c-s.fr> References: <1ae02b6637b87fc5aaa1d5012c3e2cb30e62b4a3.1585670437.git.christophe.leroy@c-s.fr> From: Christophe Leroy Subject: [PATCH v2 02/12] powerpc/82xx: Blacklist pq2_restart() for kprobe To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , naveen.n.rao@linux.vnet.ibm.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Tue, 31 Mar 2020 16:03:37 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org kprobe does not handle events happening in real mode, all functions running with MMU disabled have to be blacklisted. Signed-off-by: Christophe Leroy Acked-by: Naveen N. Rao --- arch/powerpc/platforms/82xx/pq2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/platforms/82xx/pq2.c b/arch/powerpc/platforms/82xx/pq2.c index 1cdd5ed9d896..3b5cb39a564c 100644 --- a/arch/powerpc/platforms/82xx/pq2.c +++ b/arch/powerpc/platforms/82xx/pq2.c @@ -10,6 +10,8 @@ * Copyright (c) 2006 MontaVista Software, Inc. */ +#include + #include #include #include @@ -29,6 +31,7 @@ void __noreturn pq2_restart(char *cmd) panic("Restart failed\n"); } +NOKPROBE_SYMBOL(pq2_restart) #ifdef CONFIG_PCI static int pq2_pci_exclude_device(struct pci_controller *hose, -- 2.25.0