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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C49A9C77B72 for ; Fri, 14 Apr 2023 14:26:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 628B5280001; Fri, 14 Apr 2023 10:26:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5D9E86B0078; Fri, 14 Apr 2023 10:26:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4A0C0280001; Fri, 14 Apr 2023 10:26:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 3AE676B0075 for ; Fri, 14 Apr 2023 10:26:42 -0400 (EDT) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 1C8728036E for ; Fri, 14 Apr 2023 14:26:42 +0000 (UTC) X-FDA: 80680222644.04.AA206AA Received: from mail-pj1-f41.google.com (mail-pj1-f41.google.com [209.85.216.41]) by imf12.hostedemail.com (Postfix) with ESMTP id 444B34001A for ; Fri, 14 Apr 2023 14:26:40 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=gmail.com header.s=20221208 header.b=GRybeaFM; spf=pass (imf12.hostedemail.com: domain of shiyn.lin@gmail.com designates 209.85.216.41 as permitted sender) smtp.mailfrom=shiyn.lin@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1681482400; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=pkKoN7JGClqVnt1AeoWnxp66FVN/o5YfrH8QxbWcJ4w=; b=IlAojasN3UJUXVyJQxHVw5lxBEe77XkzTR1UfTntfAAKUkA92XNE4ypRz10S4aoSmKYUZa 2wKWFore7vxC5PnXlWmjzn1vdjpIrLReehU/beJPOMkFCJtcp7Zxyaa9g9qOi3GZEDuPuo ebdSvQpTasFYqZVMEbKlT4M+b+TawMA= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=gmail.com header.s=20221208 header.b=GRybeaFM; spf=pass (imf12.hostedemail.com: domain of shiyn.lin@gmail.com designates 209.85.216.41 as permitted sender) smtp.mailfrom=shiyn.lin@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1681482400; a=rsa-sha256; cv=none; b=I2mmwpUql/KmvGqCIodPo2AS+o44VZpGoYj6dhEDsohyC+lidHnfiRq6/eXLtGjAtqS6VV fLfjphfT7MscgNBAEnsRb/vbyNdoSKXfVv9uQE/HbWmbaN95UmdINrgAah7LaADQsgW+nz mstRN0EYmC+VArN3owWDMS//j+4ZQKg= Received: by mail-pj1-f41.google.com with SMTP id fw22-20020a17090b129600b00247255b2f40so4639604pjb.1 for ; Fri, 14 Apr 2023 07:26:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681482400; x=1684074400; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=pkKoN7JGClqVnt1AeoWnxp66FVN/o5YfrH8QxbWcJ4w=; b=GRybeaFMg+Tlp7YS9TVn4xA45yiEJL0qMT1inOuLZsGOXPVD2E/YaXnYcgYTXRUz// QvmpHhgCwPci58KuGNuLYdFMpZPK6bnXEcnxiRsfm/bCSZrOLaHnj/SEZDBWYisnuRM2 +DmqjELMmOt4orXaPNd0id1kWz9cyVowFUg4AyBtYjiUc+UmYRPdjKRwUOeizBqMFH1Y 7D+lI6PErU4cZ0n1S53tvBs5zsPXdak3yH0KqfblvcF/6rQEuvpqrSOwPDxRwOk2GHaL +RbWVZRrlnha4CkqVW6/HiukXtBUoOII7B692mHbsqKGp5WGuHfv+sJ9KmHFUGHLUnyc jtWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681482400; x=1684074400; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=pkKoN7JGClqVnt1AeoWnxp66FVN/o5YfrH8QxbWcJ4w=; b=T7E24S+wHCd4Nz2aEO8iusAYpwfS+kKjSoFZAEm9fbh1nexrxXN13e5ouymyIWyruV BE9Q7VkL/DI2J9gT1DwurOO16bwHO1yvSqVEgGcUbppIBxE2ON8Y+f6Hps+QKc8jTxJO DCLdl9mGLHV8q+rO88yPxjw6TmrIml8icI6tDw3Kb1DeFRClNCw+l0GMII65Udqwo+0t jkaPCoF/uhyjZkhBqKmsFf1ri8H8/ihP9aDTymALQXU4bH+PHqniCHWhB9W5GvTXCeIl 0GDEcGOC1GAzMtbzn4Q86WBknOJ+ByZ90AKNZct1sufAsB+mexuDiWKlJzXz2s3EI3ze W1zQ== X-Gm-Message-State: AAQBX9fYPInwaCthkODYY5xhFjqIecjkLHBCk+2L7NFRj5oMghkLhbux 23jWtVTpV4qBYOkcSiLZClo= X-Google-Smtp-Source: AKy350Y5ToRmeTXJN5+SiXzLMP/O2AXtSNTAG2ikMyRrX7oX9xVsgnswEEqRZu4VkIFIeAnepJcLLg== X-Received: by 2002:a17:90b:19c3:b0:246:cf0c:ecd7 with SMTP id nm3-20020a17090b19c300b00246cf0cecd7mr5668320pjb.16.1681482399689; Fri, 14 Apr 2023 07:26:39 -0700 (PDT) Received: from strix-laptop.. (2001-b011-20e0-1499-8303-7502-d3d7-e13b.dynamic-ip6.hinet.net. [2001:b011:20e0:1499:8303:7502:d3d7:e13b]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm2952386pjt.22.2023.04.14.07.26.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Apr 2023 07:26:39 -0700 (PDT) From: Chih-En Lin To: Andrew Morton , Qi Zheng , David Hildenbrand , "Matthew Wilcox (Oracle)" , Christophe Leroy , John Hubbard , Nadav Amit , Barry Song , Pasha Tatashin Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Peter Zijlstra , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , Yu Zhao , Steven Barrett , Juergen Gross , Peter Xu , Kefeng Wang , Tong Tiangen , Christoph Hellwig , "Liam R. Howlett" , Yang Shi , Vlastimil Babka , Alex Sierra , Vincent Whitchurch , Anshuman Khandual , Li kunyu , Liu Shixin , Hugh Dickins , Minchan Kim , Joey Gouly , Chih-En Lin , Michal Hocko , Suren Baghdasaryan , "Zach O'Keefe" , Gautam Menghani , Catalin Marinas , Mark Brown , "Eric W. Biederman" , Andrei Vagin , Shakeel Butt , Daniel Bristot de Oliveira , "Jason A. Donenfeld" , Greg Kroah-Hartman , Alexey Gladkov , x86@kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Dinglan Peng , Pedro Fonseca , Jim Huang , Huichun Feng Subject: [PATCH v5 15/17] events/uprobes: Break COW PTE before replacing page Date: Fri, 14 Apr 2023 22:23:39 +0800 Message-Id: <20230414142341.354556-16-shiyn.lin@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230414142341.354556-1-shiyn.lin@gmail.com> References: <20230414142341.354556-1-shiyn.lin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 444B34001A X-Rspam-User: X-Stat-Signature: x3pt6jktttpjignamfddujj66ixf67fz X-HE-Tag: 1681482400-624442 X-HE-Meta: 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 NzzbBwjf 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 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: Break COW PTE if we want to replace the page which resides in COW-ed PTE. Signed-off-by: Chih-En Lin --- kernel/events/uprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 59887c69d54c..db6bfaab928d 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -156,7 +156,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr, struct folio *old_folio = page_folio(old_page); struct folio *new_folio; struct mm_struct *mm = vma->vm_mm; - DEFINE_FOLIO_VMA_WALK(pvmw, old_folio, vma, addr, 0); + DEFINE_FOLIO_VMA_WALK(pvmw, old_folio, vma, addr, PVMW_BREAK_COW_PTE); int err; struct mmu_notifier_range range; -- 2.34.1