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=-6.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 A35CFC43331 for ; Tue, 31 Mar 2020 16:03:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 731FF206CC for ; Tue, 31 Mar 2020 16:03:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="BeXjt4ut" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731248AbgCaQDj (ORCPT ); Tue, 31 Mar 2020 12:03:39 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:21148 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730286AbgCaQDi (ORCPT ); Tue, 31 Mar 2020 12:03:38 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 48sDdg29KCz9twdV; Tue, 31 Mar 2020 18:03:35 +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=BeXjt4ut; 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 0PdTXi77vLjH; Tue, 31 Mar 2020 18:03:35 +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 48sDdg0n23z9twdT; 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=1585670615; bh=jr6C836d6/K+QMPMhDUcw03Ae25ZLJxgX2gqBs7HA5s=; h=From:Subject:To:Cc:Date:From; b=BeXjt4utb5qUj+kYChi9T2UI4MDNHG3pDSE7OnJV38cZ/1qm4NJBKCq2sX8MUkTft V9yI5dv36rNBfrQoGumHIx6JQkdnRmLOOd+MQai/1OA0stjYYWz2vKpIt2ls5GBnVm 75NhBYvtETTk0d6ztJZ/mpxK+EmIAVr0T/ZAWKsk= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B37AB8B868; Tue, 31 Mar 2020 18:03:36 +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 ZouzspUcVyRt; Tue, 31 Mar 2020 18:03:36 +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 58BBF8B752; Tue, 31 Mar 2020 18:03:36 +0200 (CEST) Received: by pc16570vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 43508656AC; Tue, 31 Mar 2020 16:03:36 +0000 (UTC) Message-Id: <1ae02b6637b87fc5aaa1d5012c3e2cb30e62b4a3.1585670437.git.christophe.leroy@c-s.fr> From: Christophe Leroy Subject: [PATCH v2 01/12] powerpc/52xx: Blacklist functions running with MMU disabled 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 16:03:36 +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/52xx/lite5200_sleep.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/52xx/lite5200_sleep.S b/arch/powerpc/platforms/52xx/lite5200_sleep.S index 3a9969c429b3..70083649c9ea 100644 --- a/arch/powerpc/platforms/52xx/lite5200_sleep.S +++ b/arch/powerpc/platforms/52xx/lite5200_sleep.S @@ -248,6 +248,7 @@ mmu_on: blr +_ASM_NOKPROBE_SYMBOL(lite5200_wakeup) /* ---------------------------------------------------------------------- */ @@ -391,6 +392,7 @@ restore_regs: LOAD_SPRN(TBWU, 0x5b); blr +_ASM_NOKPROBE_SYMBOL(restore_regs) -- 2.25.0 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 9A11AC2D0EE for ; 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Tue, 31 Mar 2020 18:03:36 +0200 (CEST) Received: by pc16570vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 43508656AC; Tue, 31 Mar 2020 16:03:36 +0000 (UTC) Message-Id: <1ae02b6637b87fc5aaa1d5012c3e2cb30e62b4a3.1585670437.git.christophe.leroy@c-s.fr> From: Christophe Leroy Subject: [PATCH v2 01/12] powerpc/52xx: Blacklist functions running with MMU disabled for kprobe To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , naveen.n.rao@linux.vnet.ibm.com Date: Tue, 31 Mar 2020 16:03:36 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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/52xx/lite5200_sleep.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/52xx/lite5200_sleep.S b/arch/powerpc/platforms/52xx/lite5200_sleep.S index 3a9969c429b3..70083649c9ea 100644 --- a/arch/powerpc/platforms/52xx/lite5200_sleep.S +++ b/arch/powerpc/platforms/52xx/lite5200_sleep.S @@ -248,6 +248,7 @@ mmu_on: blr +_ASM_NOKPROBE_SYMBOL(lite5200_wakeup) /* ---------------------------------------------------------------------- */ @@ -391,6 +392,7 @@ restore_regs: LOAD_SPRN(TBWU, 0x5b); blr +_ASM_NOKPROBE_SYMBOL(restore_regs) -- 2.25.0