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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 0B8FEC76188 for ; Mon, 22 Jul 2019 07:14:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D184022305 for ; Mon, 22 Jul 2019 07:14:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PP0eSpGL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727594AbfGVHO1 (ORCPT ); Mon, 22 Jul 2019 03:14:27 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:43668 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725773AbfGVHO1 (ORCPT ); Mon, 22 Jul 2019 03:14:27 -0400 Received: by mail-pf1-f194.google.com with SMTP id i189so16933516pfg.10 for ; Mon, 22 Jul 2019 00:14:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rKKwPKQ9nSH1uCbjpYY0QdQfAXfR9yy6okm4F8X7Kfk=; b=PP0eSpGL9fJvYulXJ4voZq4Jh7vxlXxo8EL8ugM+R/prryBtWxNwVsTCyjZLqnSAgQ /yyZ7O8UA5ScPZgjwDejQ/Yi0WSW6DkAl9fJLgeDXEBOCV0skgYrmsI0WmduD2xClwVw krvoRSVZXy975cfdfS7S7STa/dD6nk4tUg0QSqA0ejwJ+mSVTARL+BwLWadmie6HaUKR I7kBAxl70FYkvuwxVHT69BbMGtRgFiAFoVB2uNnGZkcA7yB5Li8kobWOj2HD9Plb5uT0 TKHUCDqEvI1WNiBAwiGTrO5mMhKs7bYFdb/f0Vjq3ytn16P6AVk4+Ox7fruON+gvujrZ h8nA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rKKwPKQ9nSH1uCbjpYY0QdQfAXfR9yy6okm4F8X7Kfk=; b=rd5yepKoIU64pB3CZ1RH4fBHtem9QepzksY+aGa08m3bFYXCfPHmLSHGa6RZ0WnEhi 6+1fu1A8pq//+DQBOEXCOYgTG1WmHcxoTsIUOUzuKJwM2S6kzpSajlUIz8IrvBZaSoIu HtdfUUJtEMhqpH69XJ+GQAqDiEaNRuFabWZJUKjpNbXjsVnX9TdeAFWl2iJr3K650xKc NKmm1VB8yNM8bSBQyds/uQg7/rYPPhLDzsNhYER6j1Gl16/80CWNsYuuGXpEqL92otgQ BCkwNtrsPafeo9UAqu/7idAX3H/p7a/x3bnhw2Q1gDB2YSieR+zCp6YjUP6m4xCEC7aM aSqA== X-Gm-Message-State: APjAAAVMyWETW/NkDwxz+5/y1zFhm10y5oswOU8JtaF48UFKeRTfa5zQ pMKJSKHSc2tXALtt2fHrKNo= X-Google-Smtp-Source: APXvYqxR6M9vTipkk84zlF3VH62Hs3fFypm9ayC0zj9LFqagpkrYFOqMSV+EYgBVLAjN5A6aykTdBQ== X-Received: by 2002:a63:5d45:: with SMTP id o5mr70953105pgm.40.1563779666597; Mon, 22 Jul 2019 00:14:26 -0700 (PDT) Received: from ubt.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id 195sm61983642pfu.75.2019.07.22.00.14.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 22 Jul 2019 00:14:25 -0700 (PDT) From: Chunyan Zhang To: Russell King , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Chunyan Zhang , Lvqiang Huang Subject: [PATCH] ARM: check stmfd instruction using right shift Date: Mon, 22 Jul 2019 15:14:19 +0800 Message-Id: <20190722071419.22535-1-zhang.lyra@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190722071122.22434-1-zhang.lyra@gmail.com> References: <20190722071122.22434-1-zhang.lyra@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lvqiang Huang In the commit ef41b5c92498 ("ARM: make kernel oops easier to read"), - .word 0xe92d0000 >> 10 @ stmfd sp!, {} + .word 0xe92d0000 >> 11 @ stmfd sp!, {} then the shift need to change to 11. Fixes: ef41b5c92498 ("ARM: make kernel oops easier to read") Signed-off-by: Lvqiang Huang Signed-off-by: Chunyan Zhang --- arch/arm/lib/backtrace.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/lib/backtrace.S b/arch/arm/lib/backtrace.S index 7d7952e..926851b 100644 --- a/arch/arm/lib/backtrace.S +++ b/arch/arm/lib/backtrace.S @@ -70,7 +70,7 @@ for_each_frame: tst frame, mask @ Check for address exceptions 1003: ldr r2, [sv_pc, #-4] @ if stmfd sp!, {args} exists, ldr r3, .Ldsi+4 @ adjust saved 'pc' back one - teq r3, r2, lsr #10 @ instruction + teq r3, r2, lsr #11 @ instruction subne r0, sv_pc, #4 @ allow for mov subeq r0, sv_pc, #8 @ allow for mov + stmia -- 1.7.9.5