From patchwork Tue Nov 9 02:34:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12609511 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 027D1C433EF for ; Tue, 9 Nov 2021 02:34:13 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AC68660FDA for ; Tue, 9 Nov 2021 02:34:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org AC68660FDA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 50C406B00CF; Mon, 8 Nov 2021 21:34:12 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4BB716B00D0; Mon, 8 Nov 2021 21:34:12 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 383E06B00D1; Mon, 8 Nov 2021 21:34:12 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0124.hostedemail.com [216.40.44.124]) by kanga.kvack.org (Postfix) with ESMTP id 2AD816B00CF for ; Mon, 8 Nov 2021 21:34:12 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id EDF3A7CB20 for ; Tue, 9 Nov 2021 02:34:11 +0000 (UTC) X-FDA: 78787822302.16.33CC476 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf29.hostedemail.com (Postfix) with ESMTP id 935D19001A86 for ; Tue, 9 Nov 2021 02:34:11 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 2D489611CC; Tue, 9 Nov 2021 02:34:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1636425250; bh=aWzP+yZXLsdeYemkw9GGfAVdpImQ+8+EenNwBfM+Olg=; h=Date:From:To:Subject:In-Reply-To:From; b=DdcmLGUAf9ByK8Qnw6O3p5boZUi8hq0U6pSlpPiFhRy49XkDA305wFqvYN+0Cq+u5 0RRN+mnisaOkcgrXKDoWQ7ykasWJ5gqjYWUGIcQ4akImCLfAcZfy3UUsQm6SxOe96N uGzdKatT4JMag3rx8lAsTrRjgXCY4Y+jKE4sAG5w= Date: Mon, 08 Nov 2021 18:34:09 -0800 From: Andrew Morton To: akpm@linux-foundation.org, andreyknvl@gmail.com, arnd@arndb.de, ast@kernel.org, benh@kernel.crashing.org, bp@alien8.de, christophe.leroy@csgroup.eu, davem@davemloft.net, dvyukov@google.com, glider@google.com, ink@jurassic.park.msu.ru, linux-mm@kvack.org, mattst88@gmail.com, mingo@redhat.com, mm-commits@vger.kernel.org, monstr@monstr.eu, mpe@ellerman.id.au, paulus@samba.org, pmladek@suse.com, rostedt@goodmis.org, rth@twiddle.net, ryabinin.a.a@gmail.com, senozhatsky@chromium.org, tglx@linutronix.de, torvalds@linux-foundation.org, wangkefeng.wang@huawei.com Subject: [patch 51/87] extable: use is_kernel_text() helper Message-ID: <20211109023409.MRWi1-bFl%akpm@linux-foundation.org> In-Reply-To: <20211108183057.809e428e841088b657a975ec@linux-foundation.org> User-Agent: s-nail v14.8.16 Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=DdcmLGUA; spf=pass (imf29.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 935D19001A86 X-Stat-Signature: zo7nwhykqw7n8fj1r57znpi8ixc1gyjk X-HE-Tag: 1636425251-761200 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Kefeng Wang Subject: extable: use is_kernel_text() helper The core_kernel_text() should check the gate area, as it is part of kernel text range, use is_kernel_text() in core_kernel_text(). Link: https://lkml.kernel.org/r/20210930071143.63410-9-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Reviewed-by: Sergey Senozhatsky Cc: Steven Rostedt Cc: Alexander Potapenko Cc: Alexei Starovoitov Cc: Andrey Konovalov Cc: Andrey Ryabinin Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Christophe Leroy Cc: "David S. Miller" Cc: Dmitry Vyukov Cc: Ingo Molnar Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Michael Ellerman Cc: Michal Simek Cc: Paul Mackerras Cc: Petr Mladek Cc: Richard Henderson Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- kernel/extable.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/kernel/extable.c~extable-use-is_kernel_text-helper +++ a/kernel/extable.c @@ -64,8 +64,7 @@ const struct exception_table_entry *sear int notrace core_kernel_text(unsigned long addr) { - if (addr >= (unsigned long)_stext && - addr < (unsigned long)_etext) + if (is_kernel_text(addr)) return 1; if (system_state < SYSTEM_FREEING_INITMEM &&