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 5E72DC43334 for ; Wed, 8 Jun 2022 15:07:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CECEC6B0072; Wed, 8 Jun 2022 11:07:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C9C3F6B009F; Wed, 8 Jun 2022 11:07:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B63FE6B00A0; Wed, 8 Jun 2022 11:07:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id A3B7E6B0072 for ; Wed, 8 Jun 2022 11:07:41 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 77BA62101E for ; Wed, 8 Jun 2022 15:07:41 +0000 (UTC) X-FDA: 79555397922.14.5977761 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf23.hostedemail.com (Postfix) with ESMTP id 54EE0140052 for ; Wed, 8 Jun 2022 15:07:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=ezwSP2ycpO1p3eEM9FoNLAzo6tW/B/UAxq7z/I5YF+c=; b=VX18ZEOxSUcNpyBZYrsteOdpBT HZTcWzeAfZ6BJYQuFjLWfCOJvTMUxk8MBr1xKoL2P60bmS4cJFpNLiXDZtftqzI+rgduxGS68DtiK n2sX7U8y/70osNz3d2Xt0J6OluKnOUM3YB9Zi9fJja9GYLe+tapPXdVPaGQ3u9lSN6Xi3CMW1rzUO e3CAfEEv9OEh2D7wgtx4oI2+cs3IN1VyHSrg0xW5CGtOKE5NiMzT399Egt+AxLGeudx7a3sdf9LdV Mi/zih0vfnOHChkKnY+yM8XUEhW7zxYgPk9eAQTvAmT+1w3WkGykJpFbfD3mdaGEeXhyHnkHSdNZ4 EXPPsicA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyxHH-00CjeB-22; Wed, 08 Jun 2022 15:07:23 +0000 Date: Wed, 8 Jun 2022 16:07:23 +0100 From: Matthew Wilcox To: kernel test robot Cc: Baolin Wang , 0day robot , LKML , linux-csky@vger.kernel.org, openrisc@lists.librecores.org, linux-arch@vger.kernel.org, lkp@lists.01.org, akpm@linux-foundation.org, linux-mm@kvack.org Subject: Re: [mm] 9b12e49e9b: BUG:Bad_page_state_in_process Message-ID: References: <20220608143819.GA31193@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220608143819.GA31193@xsang-OptiPlex-9020> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 54EE0140052 X-Stat-Signature: 8ika9p968uj35ti1z7btr6jk3qmyz381 X-Rspam-User: Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=VX18ZEOx; spf=none (imf23.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-HE-Tag: 1654700857-857537 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: On Wed, Jun 08, 2022 at 10:38:19PM +0800, kernel test robot wrote: > > > Greeting, > > FYI, we noticed the following commit (built with gcc-11): > > commit: 9b12e49e9b02bbaca8041f236a6b2fd4586d45c8 ("[RFC PATCH 3/3] mm: Add kernel PTE level pagetable pages account") > [ 75.338681][ T4873] BUG: Bad page state in process 444 pfn:20b066 > [ 75.338840][ T4873] page:0000000016cf0259 refcount:0 mapcount:-512 mapping:0000000000000000 index:0x0 pfn:0x20b066 mapcount:-512 is PG_table. Somebody forgot to call pgtable_pte_page_dtor() (or similar) > [ 75.339041][ T4873] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff) > [ 75.339190][ T4873] raw: 0017ffffc0000000 dead000000000100 dead000000000122 0000000000000000 > [ 75.339350][ T4873] raw: 0000000000000000 0000000000000000 00000000fffffdff 0000000000000000 > [ 75.339508][ T4873] page dumped because: nonzero mapcount > [ 75.341013][ T4873] Call Trace: > [ 75.341080][ T4873] > [ 75.341142][ T4873] dump_stack_lvl (lib/dump_stack.c:107 (discriminator 1)) > [ 75.341236][ T4873] bad_page.cold (mm/page_alloc.c:637) > [ 75.341326][ T4873] free_pcppages_bulk (mm/page_alloc.c:1511) > [ 75.341428][ T4873] free_unref_page (arch/x86/include/asm/irqflags.h:137 mm/page_alloc.c:3444) > [ 75.341524][ T4873] __mmdrop (arch/x86/include/asm/mmu_context.h:125 (discriminator 3) kernel/fork.c:791 (discriminator 3)) > [ 75.341608][ T4873] ? __mmput (arch/x86/include/asm/atomic.h:123 include/linux/atomic/atomic-instrumented.h:576 include/linux/sched/mm.h:49 kernel/fork.c:1194) > [ 75.341889][ T4873] exec_mmap (fs/exec.c:1035) > [ 75.341977][ T4873] begin_new_exec (fs/exec.c:1293) > [ 75.342071][ T4873] ? kernel_read (fs/read_write.c:455) > [ 75.342160][ T4873] load_elf_binary (fs/binfmt_elf.c:1002)