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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 09E9FCA0EFF for ; Wed, 27 Aug 2025 21:31:08 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 357436B0062; Wed, 27 Aug 2025 17:31:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 308096B007B; Wed, 27 Aug 2025 17:31:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 21DA86B0088; Wed, 27 Aug 2025 17:31:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 0A3EC6B0062 for ; Wed, 27 Aug 2025 17:31:08 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 99A681A083E for ; Wed, 27 Aug 2025 21:31:07 +0000 (UTC) X-FDA: 83823832974.24.26C6754 Received: from manchmal.in-ulm.de (manchmal.in-ulm.de [217.10.9.201]) by imf02.hostedemail.com (Postfix) with ESMTP id 9C1A280003 for ; Wed, 27 Aug 2025 21:31:05 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=manchmal.in-ulm.de; spf=pass (imf02.hostedemail.com: domain of linux-kernel.bfrz@manchmal.in-ulm.de designates 217.10.9.201 as permitted sender) smtp.mailfrom=linux-kernel.bfrz@manchmal.in-ulm.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1756330266; 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: in-reply-to:in-reply-to:references:references; bh=UYWGQPmX6bVwZclzC4hrEojML/ykl94D8lch15dFTbk=; b=pCmvIlbrTT3VAGMDS9tdpiS/PyfmajCMwze/IldZGkm4yCNLrOfAk4EVQ9JAJOuo5VUZrZ bqYMkWo4bEBYn7arbeASHi0o9SebG+HR7KhXI7rm0db+atbaMMdtaWcfv/SkjJWzA87Uu5 GLvXf97GA4HocnNJko0ce6R9KqavVI4= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=manchmal.in-ulm.de; spf=pass (imf02.hostedemail.com: domain of linux-kernel.bfrz@manchmal.in-ulm.de designates 217.10.9.201 as permitted sender) smtp.mailfrom=linux-kernel.bfrz@manchmal.in-ulm.de ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1756330266; a=rsa-sha256; cv=none; b=ONpl4qOtRgk/dqk0bco79Ab5cbIlSj4RW2d3g/94N8pElS8uUgDW30Q4yaE8L2XtZbkxNW ai4loG00/1E2YVVQd7zrlYRQ7ZbkIyfqSCHfPA/DOkObB/Z5eb0Yc8XYQUDN6LRYCmSZ0G UZ5quNf39uKrlsiJqe7UtakaFrmmAlg= Date: Wed, 27 Aug 2025 23:31:02 +0200 From: Christoph Biedl To: Helge Deller Cc: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= , Linux Kernel Development , Linux Memory Management List , linux-parisc Subject: Re: 6.16-pre-rc1: BUG: Bad page state in process swapper on parisc Message-ID: <1756327287@msgid.manchmal.in-ulm.de> References: <5a004aef-9df1-4126-b167-1aae27d4240d@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5a004aef-9df1-4126-b167-1aae27d4240d@gmx.de> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 9C1A280003 X-Stat-Signature: rkkz6187dfb33nbmnudokxyt61mudxs8 X-Rspam-User: X-HE-Tag: 1756330265-640172 X-HE-Meta: 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 InX2qon1 qopc+mzH0QMJPQIdKg8x+wQQPFbI+2ezPaVyXCGsRV7O5OkU6s/tYQXCjqUHBGYkRUoUCuFJ19w5Azuk= 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: Sorry for being somewhat late to the party ... Helge Deller wrote a few weeks ago ... > I'm facing a kernel crash on the 32-bit parisc platform with git head. > > git bisecting leads to this patch which triggers the crash: > commit ee62ce7a1d90 ("page_pool: Track DMA-mapped pages and unmap them when destroying the pool") > > Syslog:... > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 131072 > [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > [ 0.000000] stackdepot: allocating hash table via alloc_large_system_hash > [ 0.000000] stackdepot hash table entries: 32768 (order: 6, 262144 bytes, linear) > .. > [ 0.000000] MEMBLOCK configuration: (I added this output during debugging:) > [ 0.000000] memory size = 0x20000000 reserved size = 0x01f0ed2a > [ 0.000000] memory.cnt = 0x1 > [ 0.000000] memory[0x0] [0x00000000-0x1fffffff], 0x20000000 bytes flags: 0x0 > [ 0.000000] reserved.cnt = 0xa > [ 0.000000] reserved[0x0] [0x00000000-0x0008a0b0], 0x0008a0b1 bytes flags: 0x0 > [ 0.000000] reserved[0x1] [0x0008a0c0-0x0008a130], 0x00000071 bytes flags: 0x0 > [ 0.000000] reserved[0x2] [0x0008a140-0x0008a143], 0x00000004 bytes flags: 0x0 > [ 0.000000] reserved[0x3] [0x0008a150-0x0008a153], 0x00000004 bytes flags: 0x0 > [ 0.000000] reserved[0x4] [0x0008a160-0x0008a2d3], 0x00000174 bytes flags: 0x0 > [ 0.000000] reserved[0x5] [0x0008a2e0-0x0008a5e3], 0x00000304 bytes flags: 0x0 > [ 0.000000] reserved[0x6] [0x0008a5f0-0x0008a6b3], 0x000000c4 bytes flags: 0x0 > [ 0.000000] reserved[0x7] [0x0008a6c0-0x0008acc3], 0x00000604 bytes flags: 0x0 > [ 0.000000] reserved[0x8] [0x0008acd0-0x000f6d8f], 0x0006c0c0 bytes flags: 0x0 > [ 0.000000] reserved[0x9] [0x00100000-0x01f17fff], 0x01e18000 bytes flags: 0x0 > [ 0.000000] BUG: Bad page state in process swapper pfn:000f7 > [ 0.000000] page: refcount:0 mapcount:0 mapping:00000000 index:0x0 pfn:0xf7 > [ 0.000000] flags: 0x0(zone=0) > [ 0.000000] raw: 00000000 118022c0 118022c0 00000000 00000000 00000000 ffffffff 00000000 > [ 0.000000] raw: 00000000 > [ 0.000000] page dumped because: page_pool leak > [ 0.000000] Modules linked in: > [ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc1-32bit+ #2730 NONE > [ 0.000000] Hardware name: 9000/778/B160L > [ 0.000000] Backtrace: > [ 0.000000] [<1041d1f4>] show_stack+0x34/0x48 > [ 0.000000] [<10412dd8>] dump_stack_lvl+0x80/0xc8 > [ 0.000000] [<10412e3c>] dump_stack+0x1c/0x2c > [ 0.000000] [<106ece88>] bad_page+0x14c/0x17c > [ 0.000000] [<10406c50>] free_page_is_bad.part.0+0xd4/0xec > [ 0.000000] [<106ed180>] free_page_is_bad+0x80/0x88 > [ 0.000000] [<106ef05c>] __free_pages_ok+0x374/0x508 > [ 0.000000] [<1011d34c>] __free_pages_core+0x1f0/0x218 > [ 0.000000] [<1011a2f0>] memblock_free_pages+0x68/0x94 > [ 0.000000] [<10120324>] memblock_free_all+0x26c/0x310 > [ 0.000000] [<1011a4d8>] mm_core_init+0x18c/0x208 > [ 0.000000] [<10100e88>] start_kernel+0x4ec/0x7a0 > [ 0.000000] [<101054d0>] start_parisc+0xb4/0xc4 The same occured here but due to time constraints and hardware issues I couldn't dig into this earlier. Bisecting in the 6.15.y stable series led to commit c30ae60f41f9 which was cherry-picked from ee62ce7a1d90 ("page_pool: Track DMA-mapped pages and unmap them when destroying the pool"). The problem still exists in 6.17-rc2. | HP-UX model name: 9000/785/C3600 if that matters. Christoph