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 8A0B6C27C4F for ; Fri, 14 Jun 2024 00:04:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6908B6B009B; Thu, 13 Jun 2024 20:03:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 640606B009D; Thu, 13 Jun 2024 20:03:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5081B6B009E; Thu, 13 Jun 2024 20:03:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id EFED76B009B for ; Thu, 13 Jun 2024 20:03:56 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 89BE7120178 for ; Fri, 14 Jun 2024 00:03:56 +0000 (UTC) X-FDA: 82227546072.06.ECF1765 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf07.hostedemail.com (Postfix) with ESMTP id 7D10F40010 for ; Fri, 14 Jun 2024 00:03:54 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=1BKppVSF; spf=pass (imf07.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1718323434; 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=41lCm9fpoxWvRZ3+xwOINRnvA271DEtbuFeVAhEKDqQ=; b=spvXEk4MVoCgcdDv6N1LrglFjbcYyrJMA9847x3+Wgh2EvpR908sk4IigThA25uUhTvoBl 1OVL1laxdI1XU/veALaMBa7aeZZTTuIwyfvzyBMsm+FynaNysVZYpKAtkDiNUvWiwY2jt5 EBkG1W958OBKRAq4drVjHcunLciJFIU= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=1BKppVSF; spf=pass (imf07.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1718323434; a=rsa-sha256; cv=none; b=ypaculiM2pnhZzLM1pSsXQ3BC1NziM/DKpTu9/LelMu5Hkkp7I4BSiAOJ9WAvcnaLelwh0 sCcDqgn/YAY2KT8fV0ZT75YOj6kdfG9crXKHHgby8o6iq+54q7wGfl4IwtX+Wc8A3Um3rH G94tW5gEjF/zfE2QuQ6uyLpeYPCa4FE= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id C918E61879; Fri, 14 Jun 2024 00:03:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B732C2BBFC; Fri, 14 Jun 2024 00:03:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1718323432; bh=IDZppd8I11DRt960/387Nib64RFk/NqQUrG6Tp8DmJw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=1BKppVSF5Cjfv7fktHuzeWdqy0qtO34XKNrdqM213LZbVXpoqDGR17NRdioYl/URO HmRRakRJMr1o7GNe72H1ZUQwyFYEUYoZxx018+7BGLSoquoVfRuHrnh3i7nWS1i7ZM ou5BFvQHXTUYPuqubOj+2lH2trHdpXjcl1b7HrR8= Date: Thu, 13 Jun 2024 17:03:51 -0700 From: Andrew Morton To: Bert Karwatzki Cc: "Liam R. Howlett" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org Subject: Re: commit 1c29a32ce65f4cd0f1c causes Bad rss-counter state and firefox-esr crash in linux-next-20240613 Message-Id: <20240613170351.cc3e7ccfa1bb198b57f31352@linux-foundation.org> In-Reply-To: References: X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: dho1p4qiufkfr3kzf4tko1co9dho38t9 X-Rspam-User: X-Rspamd-Queue-Id: 7D10F40010 X-Rspamd-Server: rspam02 X-HE-Tag: 1718323434-674351 X-HE-Meta: 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 z8IcOJGE KlVXUtE9K2/+m+lpeLVSncz70xCDN52aXjzwhcVUDDe9y39RhNy0aQiHp5QVLmVtxNr2frTXf/znwd0nmch2mbFVVeeZ9cmzWGfbnWM+L7m35+qhGoQOns2+nHMOydM5J5/cw/zgWJqR1MNbe0TUrO2mfVub9AFu8NpaSGJpFniqtpM+T25flckHEjM4hAzoVXKjxXbalW+wIzRUUKPOQ1yoLUDOIJe2hS9rH 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 Fri, 14 Jun 2024 01:40:54 +0200 Bert Karwatzki wrote: > Since linux-next-20240613 firefox-esr crashes after several minutes of browsing > giving the following error messages in dmesg: > [ T2343] BUG: Bad rss-counter state mm:00000000babe0c39 type:MM_ANONPAGES val:86 > [ T4063] show_signal_msg: 16 callbacks suppressed > [ T4063] Isolated Web Co[4063]: segfault at 396d1686c000 ip 0000396d1686c000 sp > 00007ffd767b30a8 error 14 likely on CPU 7 (core 3, socket 0) > [ T4063] Code: Unable to access opcode bytes at 0x396d1686bfd6. > [ T4211] BUG: Bad rss-counter state mm:00000000cd9fc541 type:MM_ANONPAGES > val:817 > [ T3798] BUG: Bad rss-counter state mm:00000000432d87c2 type:MM_ANONPAGES > val:181 > [ T5548] BUG: Bad rss-counter state mm:00000000034aa27a type:MM_ANONPAGES > val:242 > [ T3823] BUG: Bad rss-counter state mm:0000000099734197 type:MM_ANONPAGES > val:137 > [ T1] BUG: Bad rss-counter state mm:000000005e5e2f2f type:MM_ANONPAGES val:28 Let's hope Linus doesn't read this. Why are we nuking the entire planet just because some counter went wonky? > (these are the error messages of several crashes and the error seems to affect > other processes, too (T1)) > > The crash can be provoked to appear in ~1min by opening large numbers of tabs in > firefox-esr (by holding pressing ctrl+t for some time). With this I bisected the > error to commit "1c29a32ce65f mm/mmap: use split munmap calls for MAP_FIXED" and > reverting this commit in linux-next-20240613 fixes the issue for me. Thanks, that must have taken a lot of time.