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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C760BECDFB8 for ; Tue, 24 Jul 2018 07:30:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CB5920875 for ; Tue, 24 Jul 2018 07:30:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=contabo.de header.i=@contabo.de header.b="0EkFfXgB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6CB5920875 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=contabo.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388571AbeGXIfn (ORCPT ); Tue, 24 Jul 2018 04:35:43 -0400 Received: from mail.contabo.com ([91.205.175.50]:43218 "EHLO mail.contabo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388351AbeGXIfn (ORCPT ); Tue, 24 Jul 2018 04:35:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=contabo.de; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version :Date:Message-ID:From:References:Cc:To:Subject:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=lgtPtF2NKQgpSOvCzL1nYacAvclE8PGki1YgjH2vKjw=; b=0EkFfXgBOt2xWoauDIwskH7czd vBo6YSt3NGl80LoMv4pq3de27u8p+YkjWtvXaxm1WIdMkzNTeUSPLgvdhSmtUcopbIcheyvIVnh8P 7AwJTOcbyLqS6GFSaK6AQAVku+IXDrueCCXaz0MXeDB/N31KFTYrst9OO4crOvOTSOlok3VHxvpvj GzHcFgyVsdqhtUeZrF9vnYSzFu3CWPtn7y9RT2kOQtpbBq55AUgolSMX2gc780nXyFB5lOrCoA/mA /6KRC1jsqqdGnCJ2ZC3Vn7WCdjC8JhWw3nqGVJBAxalIeyAXrMcWsz+uCGZvNeOOn644aDb3Rcsz9 QB7trr/w==; Received: from [178.238.239.246] (port=6686 helo=[192.168.178.123]) by mail.contabo.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1fhrmE-0005nY-LG; Tue, 24 Jul 2018 09:30:34 +0200 Subject: Re: Zram writeback feature unstable with heavy swap utilization - BUG: Bad page state in process... To: Minchan Kim Cc: ngupta@vflare.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky , Andrew Morton References: <0516ae2d-b0fd-92c5-aa92-112ba7bd32fc@contabo.de> <20180724010342.GA195675@rodete-desktop-imager.corp.google.com> From: Tino Lehnig Message-ID: Date: Tue, 24 Jul 2018 09:30:34 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180724010342.GA195675@rodete-desktop-imager.corp.google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mail.contabo.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - contabo.de X-Get-Message-Sender-Via: mail.contabo.com: authenticated_id: tino.lehnig@contabo.de X-Authenticated-Sender: mail.contabo.com: tino.lehnig@contabo.de Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, The first build I used was from the master branch of the mainline kernel, somewhere between rc5 and rc6. I have just reproduced the bug with 4.17.9 and 4.18-rc6. Kernel messages below. The bug does not appear on 4.14.57. I can test more versions if it helps. On 07/24/2018 03:03 AM, Minchan Kim wrote: > We didn't release v4.18 yet. Could you say what kernel tree/what version > you used? -- [ 804.485321] BUG: Bad page state in process qemu-system-x86 pfn:1c4b08e [ 804.485403] page:ffffe809312c2380 count:0 mapcount:0 mapping:0000000000000000 index:0x1 [ 804.485483] flags: 0x17fffc000000008(uptodate) [ 804.485554] raw: 017fffc000000008 0000000000000000 0000000000000001 00000000ffffffff [ 804.485632] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 804.485709] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set [ 804.485782] bad because of flags: 0x8(uptodate) [ 804.485852] Modules linked in: lz4 lz4_compress zram zsmalloc intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcb c aesni_intel aes_x86_64 crypto_simd cryptd iTCO_wdt glue_helper iTCO_vendor_support intel_cstate binfmt_misc intel_uncore intel_rapl_perf pcspkr mei_me lpc_ich joydev sg mfd_core mei ioatdma shpchp wmi evdev ipmi_si ipmi_devintf ipmi_msgh andler acpi_power_meter acpi_pad button ip_tables x_tables autofs4 ext4 crc32c_generic crc16 mbcache jbd2 fscrypto hid_generic usbhid hid sd_mod ahci libahci xhci_pci ehci_pci libata igb xhci_hcd ehci_hcd crc32c_intel i2c_algo_bit scsi_mod i2c_i801 dca usbcore [ 804.485890] CPU: 17 PID: 1165 Comm: qemu-system-x86 Not tainted 4.17.9 #1 [ 804.485891] Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0b 05/02/2017 [ 804.485891] Call Trace: [ 804.485899] dump_stack+0x5c/0x7b [ 804.485902] bad_page+0xba/0x120 [ 804.485905] get_page_from_freelist+0x1016/0x1250 [ 804.485908] __alloc_pages_nodemask+0xfa/0x250 [ 804.485911] alloc_pages_vma+0x7c/0x1c0 [ 804.485915] __handle_mm_fault+0xcf6/0x1110 [ 804.485918] handle_mm_fault+0xfc/0x1f0 [ 804.485921] __get_user_pages+0x12f/0x670 [ 804.485923] get_user_pages_unlocked+0x148/0x1f0 [ 804.485945] __gfn_to_pfn_memslot+0xff/0x390 [kvm] [ 804.485959] try_async_pf+0x67/0x200 [kvm] [ 804.485971] tdp_page_fault+0x132/0x290 [kvm] [ 804.485975] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 804.485987] kvm_mmu_page_fault+0x59/0x140 [kvm] [ 804.485999] kvm_arch_vcpu_ioctl_run+0x9b3/0x1990 [kvm] [ 804.486003] ? futex_wake+0x94/0x170 [ 804.486012] ? kvm_vcpu_ioctl+0x388/0x5d0 [kvm] [ 804.486021] kvm_vcpu_ioctl+0x388/0x5d0 [kvm] [ 804.486024] ? __switch_to+0x395/0x450 [ 804.486026] ? __switch_to+0x395/0x450 [ 804.486029] do_vfs_ioctl+0xa2/0x620 [ 804.486030] ? __x64_sys_futex+0x88/0x180 [ 804.486032] ksys_ioctl+0x70/0x80 [ 804.486034] __x64_sys_ioctl+0x16/0x20 [ 804.486037] do_syscall_64+0x55/0x100 [ 804.486039] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 804.486041] RIP: 0033:0x7f82db677dd7 [ 804.486042] RSP: 002b:00007f82c1ffa8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 804.486044] RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007f82db677dd7 [ 804.486044] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000014 [ 804.486045] RBP: 000055b592a1ddf0 R08: 000055b5914bb3d0 R09: 00000000ffffffff [ 804.486046] R10: 00007f82c1ffa670 R11: 0000000000000246 R12: 0000000000000000 [ 804.486047] R13: 00007f82e0cc6000 R14: 0000000000000000 R15: 000055b592a1ddf0 [ 804.486048] Disabling lock debugging due to kernel taint -- [ 170.707761] BUG: Bad page state in process qemu-system-x86 pfn:1901199 [ 170.707842] page:ffffe453e4046640 count:0 mapcount:0 mapping:0000000000000000 index:0x1 [ 170.707923] flags: 0x17fffc000000008(uptodate) [ 170.707996] raw: 017fffc000000008 dead000000000100 dead000000000200 0000000000000000 [ 170.708074] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 170.708151] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set [ 170.708225] bad because of flags: 0x8(uptodate) [ 170.708295] Modules linked in: lz4 lz4_compress zram zsmalloc intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iTCO_wdt iTCO_vendor_support binfmt_misc pcbc aesni_intel aes_x86_64 crypto_simd cryptd glue_helper intel_cstate mei_me intel_uncore lpc_ich intel_rapl_perf pcspkr joydev sg mfd_core mei ioatdma wmi evdev ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad pcc_cpufreq button ip_tables x_tables autofs4 ext4 crc32c_generic crc16 mbcache jbd2 fscrypto hid_generic usbhid hid sd_mod ahci libahci libata xhci_pci ehci_pci crc32c_intel xhci_hcd ehci_hcd scsi_mod i2c_i801 igb i2c_algo_bit dca usbcore [ 170.708344] CPU: 8 PID: 1031 Comm: qemu-system-x86 Not tainted 4.18.0-rc6 #1 [ 170.708345] Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0b 05/02/2017 [ 170.708346] Call Trace: [ 170.708354] dump_stack+0x5c/0x7b [ 170.708357] bad_page+0xba/0x120 [ 170.708360] get_page_from_freelist+0x1016/0x1250 [ 170.708364] __alloc_pages_nodemask+0xfa/0x250 [ 170.708368] alloc_pages_vma+0x7c/0x1c0 [ 170.708371] do_swap_page+0x347/0x920 [ 170.708375] ? do_huge_pmd_anonymous_page+0x461/0x6f0 [ 170.708377] __handle_mm_fault+0x7b4/0x1110 [ 170.708380] ? call_function_interrupt+0xa/0x20 [ 170.708383] handle_mm_fault+0xfc/0x1f0 [ 170.708385] __get_user_pages+0x12f/0x690 [ 170.708387] get_user_pages_unlocked+0x148/0x1f0 [ 170.708415] __gfn_to_pfn_memslot+0xff/0x3c0 [kvm] [ 170.708433] try_async_pf+0x87/0x230 [kvm] [ 170.708450] tdp_page_fault+0x132/0x290 [kvm] [ 170.708455] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708470] kvm_mmu_page_fault+0x74/0x570 [kvm] [ 170.708474] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708477] ? vmexit_fill_RSB+0x18/0x30 [kvm_intel] [ 170.708480] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708484] ? vmexit_fill_RSB+0x18/0x30 [kvm_intel] [ 170.708487] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708490] ? vmexit_fill_RSB+0x18/0x30 [kvm_intel] [ 170.708493] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708497] ? vmexit_fill_RSB+0x18/0x30 [kvm_intel] [ 170.708500] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708503] ? vmexit_fill_RSB+0x18/0x30 [kvm_intel] [ 170.708506] ? vmexit_fill_RSB+0xc/0x30 [kvm_intel] [ 170.708510] ? vmx_vcpu_run+0x375/0x620 [kvm_intel] [ 170.708526] kvm_arch_vcpu_ioctl_run+0x9b3/0x1990 [kvm] [ 170.708529] ? futex_wake+0x94/0x170 [ 170.708542] ? kvm_vcpu_ioctl+0x388/0x5d0 [kvm] [ 170.708555] kvm_vcpu_ioctl+0x388/0x5d0 [kvm] [ 170.708558] ? __handle_mm_fault+0x7c4/0x1110 [ 170.708561] do_vfs_ioctl+0xa2/0x630 [ 170.708563] ? __x64_sys_futex+0x88/0x180 [ 170.708565] ksys_ioctl+0x70/0x80 [ 170.708568] ? exit_to_usermode_loop+0xca/0xf0 [ 170.708570] __x64_sys_ioctl+0x16/0x20 [ 170.708572] do_syscall_64+0x55/0x100 [ 170.708574] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 170.708577] RIP: 0033:0x7fc9e4889dd7 [ 170.708577] Code: 00 00 00 48 8b 05 c1 80 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 80 2b 00 f7 d8 64 89 01 48 [ 170.708610] RSP: 002b:00007fc9c27fb8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 170.708612] RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007fc9e4889dd7 [ 170.708613] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000015 [ 170.708614] RBP: 000055dbb5f263e0 R08: 000055dbb34f03d0 R09: 00000000ffffffff [ 170.708616] R10: 00007fc9c27fb670 R11: 0000000000000246 R12: 0000000000000000 [ 170.708617] R13: 00007fc9e9ed5000 R14: 0000000000000000 R15: 000055dbb5f263e0 [ 170.708618] Disabling lock debugging due to kernel taint -- Kind regards, Tino Lehnig