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 9986EC2BD09 for ; Mon, 1 Jul 2024 03:44:37 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1030B6B008C; Sun, 30 Jun 2024 23:44:37 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0B43E6B0092; Sun, 30 Jun 2024 23:44:37 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E95A36B0095; Sun, 30 Jun 2024 23:44:36 -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 C9F5B6B008C for ; Sun, 30 Jun 2024 23:44:36 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 7E12012195A for ; Mon, 1 Jul 2024 03:44:36 +0000 (UTC) X-FDA: 82289791752.11.3929004 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) by imf27.hostedemail.com (Postfix) with ESMTP id 3CA1A4000A for ; Mon, 1 Jul 2024 03:44:34 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=kIm09XnZ; spf=pass (imf27.hostedemail.com: domain of chengming.zhou@linux.dev designates 95.215.58.187 as permitted sender) smtp.mailfrom=chengming.zhou@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1719805453; 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-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=8nZu4IWGUzc3USavL6yQ4OtuZ38R41skCyg6aC2UUCM=; b=c5zE24LkY04QxQ9QwyllAOx54iEBCzzo5hav9ZBujZ0iVkUy2NkTCLs5B+N2466BZd4x8u zk2vtH/tex1R+63Vjjn3mQU+riZEMVPYw6cHDC8LHskDTL9jRz4n8QOtgOwDASnuHPPo/D uY32tXEw2Z7QqUMQvFlO+AhViMt+WgA= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1719805453; a=rsa-sha256; cv=none; b=dgRjvymCrfTDQxa9zJqGZDY6D+Ntg5TYaruZ/FVtwcJJq892M/7Gat/lhCWNmQgYQEZ3XJ SXM5c7Jgof3+QA6MT8Cakm8hIba1iTa+vUI7u+cP/oDKzQfDnY2irW9+N/pF5Yqnmh4rB4 orW/ECgAz0AS9LOSSN12e/qerjFz/SY= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=kIm09XnZ; spf=pass (imf27.hostedemail.com: domain of chengming.zhou@linux.dev designates 95.215.58.187 as permitted sender) smtp.mailfrom=chengming.zhou@linux.dev; dmarc=pass (policy=none) header.from=linux.dev X-Envelope-To: pedro.falcato@gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1719805471; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8nZu4IWGUzc3USavL6yQ4OtuZ38R41skCyg6aC2UUCM=; b=kIm09XnZ7GtByxXazZewXdRw3x7lWjWegS+O92R9pFYtcE9LiUuHRLTZbAtWx7h6BzSgoA tGGm9g+m/a4aOeHvcmy5LU01+VyxTN2sW7GmjApmcMJeiF6dmJsTc4fSMAARPCuYEnilEt 7rBmtCLDd3FBChX9uWvJRXCZHD+skk4= X-Envelope-To: linux-mm@kvack.org X-Envelope-To: regressions@lists.linux.dev X-Envelope-To: hannes@cmpxchg.org X-Envelope-To: yosryahmed@google.com X-Envelope-To: nphamcs@gmail.com X-Envelope-To: christian@heusel.eu Message-ID: Date: Mon, 1 Jul 2024 11:44:25 +0800 MIME-Version: 1.0 Subject: Re: zswap_writeback_entry crashes in 6.9.5 To: Pedro Falcato , mm Cc: Linux Regressions , Johannes Weiner , Yosry Ahmed , Nhat Pham , Christian Heusel References: X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Chengming Zhou In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 3CA1A4000A X-Stat-Signature: use1qw61kww1x59yds33fthe4j7bzmun X-HE-Tag: 1719805474-120840 X-HE-Meta: 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 BDr9VcuX cIb2mjXs0lGYYk5OeAd6Adn8XiyXuhYzhL42WmJAbjezyEEwcB3Cy8nSXHQUKiXYCLm/1hLH47IbmaWkuz95/3E7dWkXGL1ywE4jqdT90EbLVLJ5CMTXsCoHj9dOotBAClnez4ub09cszCB9gGF7A4b/TTik5qZhaMR4rrHwUh3BlRIJMAM+WI8A7aurKROqwiQ9JbVvpjov0HZ98QtpWtPvtsUQ8Q1zYUr2gdrraLLUr84niXvw2VQdpZsVpli5M/nQIzQ7h4isucgYH7jQtAqPc1fYSBpr6bQqUzcY7isNRCu8= 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: List-Subscribe: List-Unsubscribe: On 2024/7/1 01:58, Pedro Falcato wrote: > Hi everyone, > > Reporting a bug I've experienced over the last few releases, all in > 6.9. I don't have a repro for it (seems to happen randomly?). Distro > is Arch Linux (which is itself minimally patched, config > https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/blob/e1057d426590bd2064df83779f8644de519874c0/config). > > I understand 6.9.5 is a little old, but as I have no repro I'm posting > this in case someone has any hints or has hit this before. > > dmesg: > BUG: unable to handle page fault for address: 00000000000315af > #PF: supervisor read access in kernel mode > #PF: error_code(0x0000) - not-present page > PGD 0 P4D 0 > Oops: 0000 [#1] PREEMPT SMP PTI > CPU: 5 PID: 90 Comm: kswapd0 Tainted: P U OE > 6.9.5-arch1-1 #1 b9e5462a84a73f67b5c7c6b73f88d2a6349ae768 > Hardware name: ASUSTeK COMPUTER INC. X542URR/X542URR, BIOS X542URR.310 > 10/29/2021 > RIP: 0010:zswap_writeback_entry+0x128/0x1f0 [...] > note: kswapd0[90] exited with irqs disabled I'm wondering why this kswapd has irqs disabled? Seems we don't disable interrupts in zswap_writeback_entry()?