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=-4.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 AE779C7618F for ; Wed, 24 Jul 2019 17:35:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C29821852 for ; Wed, 24 Jul 2019 17:35:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563989751; bh=G4HOoVGuAJ6lKUV5wkSPaAg7GoRucYXTZk1gDZ+7big=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=hR9G2feZ9k/dxQibysUJ1ubQUBUP/GAo8UVzE/UFbLIyS4Q9vunKhiLAY1NQ/FsNs tB0uixelbzkkjJTKwRGg+EuqJG5Ab4hhe4VSAeL0jXZWAZqlrwEa66i6QpP9qbmxFV gK4UZ+xA5nrpz/sQICeNBy1UmzErumGadJ0HZBDQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387473AbfGXRfs (ORCPT ); Wed, 24 Jul 2019 13:35:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:36646 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726323AbfGXRfr (ORCPT ); Wed, 24 Jul 2019 13:35:47 -0400 Received: from gmail.com (unknown [104.132.1.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6BCEE21852; Wed, 24 Jul 2019 17:35:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563989745; bh=G4HOoVGuAJ6lKUV5wkSPaAg7GoRucYXTZk1gDZ+7big=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=uJP9x254L3Hc/8Dx1Gh4/RU4apchF33hpHel53eSWtSk4sbLEfH5sxC+nMdqcSKJA ouQDtvvmrEp2k8nx1Pnu1KthLaBz3aHYobODzCTW594Gq4SBAucjpVZU343Z+hNby1 QAEzZfELyOwOIiLurya7zS90rmpXVdBh9srGRaFk= Date: Wed, 24 Jul 2019 10:35:44 -0700 From: Eric Biggers To: syzbot Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: net-next boot error: WARNING: workqueue cpumask: online intersect > possible intersect (2) Message-ID: <20190724173542.GA213255@gmail.com> Mail-Followup-To: syzbot , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000073c94b058e536fc4@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000073c94b058e536fc4@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, Jul 22, 2019 at 11:38:06PM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 7b5cf701 Merge branch 'sched-urgent-for-linus' of git://gi.. > git tree: net-next > console output: https://syzkaller.appspot.com/x/log.txt?x=145c4d34600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9aec8cb13b5f7389 > dashboard link: https://syzkaller.appspot.com/bug?extid=3055cb4fd9eb553bd76c > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+3055cb4fd9eb553bd76c@syzkaller.appspotmail.com > > smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, > stepping: 0x0) > Performance Events: unsupported p6 CPU model 63 no PMU driver, software > events only. > rcu: Hierarchical SRCU implementation. > NMI watchdog: Perf NMI watchdog permanently disabled > smp: Bringing up secondary CPUs ... > x86: Booting SMP configuration: > .... node #0, CPUs: #1 > MDS CPU bug present and SMT on, data leak possible. See > https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more > details. > smp: Brought up 2 nodes, 2 CPUs > smpboot: Max logical packages: 1 > smpboot: Total of 2 processors activated (9200.00 BogoMIPS) > devtmpfs: initialized > clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: > 19112604462750000 ns > futex hash table entries: 512 (order: 4, 65536 bytes, vmalloc) > xor: automatically using best checksumming function avx > PM: RTC time: 20:26:57, date: 2019-07-22 > NET: Registered protocol family 16 > audit: initializing netlink subsys (disabled) > cpuidle: using governor menu > ACPI: bus type PCI registered > dca service started, version 1.12.1 > PCI: Using configuration type 1 for base access > WARNING: workqueue cpumask: online intersect > possible intersect > HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages > HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages > cryptd: max_cpu_qlen set to 1000 > raid6: avx2x4 gen() 10942 MB/s > raid6: avx2x4 xor() 6383 MB/s > raid6: avx2x2 gen() 6482 MB/s > raid6: avx2x2 xor() 3541 MB/s > raid6: avx2x1 gen() 3326 MB/s > raid6: avx2x1 xor() 1978 MB/s > raid6: sse2x4 gen() 5350 MB/s > raid6: sse2x4 xor() 3129 MB/s > raid6: sse2x2 gen() 3754 MB/s > raid6: sse2x2 xor() 1760 MB/s > raid6: sse2x1 gen() 1702 MB/s > raid6: sse2x1 xor() 988 MB/s > raid6: using algorithm avx2x4 gen() 10942 MB/s > raid6: .... xor() 6383 MB/s, rmw enabled > raid6: using avx2x2 recovery algorithm > ACPI: Added _OSI(Module Device) > ACPI: Added _OSI(Processor Device) > ACPI: Added _OSI(3.0 _SCP Extensions) > ACPI: Added _OSI(Processor Aggregator Device) > ACPI: Added _OSI(Linux-Dell-Video) > ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) > ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) > ACPI: 2 ACPI AML tables successfully acquired and loaded > ACPI: Interpreter enabled > ACPI: (supports S0 S3 S4 S5) > ACPI: Using IOAPIC for interrupt routing > PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and > report a bug > ACPI: Enabled 16 GPEs in block 00 to 0F > ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) > acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] > acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI > configuration space under this bridge. > PCI host bridge to bus 0000:00 > pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] > pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] > pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] > pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] > pci_bus 0000:00: root bus resource [bus 00-ff] > pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 > pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 > pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI > pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 > pci 0000:00:03.0: reg 0x10: [io 0xc000-0xc03f] > pci 0000:00:03.0: reg 0x14: [mem 0xfebfe000-0xfebfe07f] > pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 > pci 0000:00:04.0: reg 0x10: [io 0xc040-0xc07f] > pci 0000:00:04.0: reg 0x14: [mem 0xfebff000-0xfebff07f] > ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) > ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) > ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) > ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) > ACPI: PCI Interrupt Link [LNKS] (IRQs *9) > vgaarb: loaded > SCSI subsystem initialized > ACPI: bus type USB registered > usbcore: registered new interface driver usbfs > usbcore: registered new interface driver hub > usbcore: registered new device driver usb > mc: Linux media interface: v0.10 > videodev: Linux video capture interface: v2.00 > pps_core: LinuxPPS API ver. 1 registered > pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti > > PTP clock support registered > EDAC MC: Ver: 3.0.0 > Advanced Linux Sound Architecture Driver Initialized. > PCI: Using ACPI for IRQ routing > Bluetooth: Core ver 2.22 > NET: Registered protocol family 31 > Bluetooth: HCI device and connection manager initialized > Bluetooth: HCI socket layer initialized > Bluetooth: L2CAP socket layer initialized > Bluetooth: SCO socket layer initialized > NET: Registered protocol family 8 > NET: Registered protocol family 20 > NetLabel: Initializing > NetLabel: domain hash size = 128 > NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO > NetLabel: unlabeled traffic allowed by default > nfc: nfc_init: NFC Core ver 0.1 > NET: Registered protocol family 39 > clocksource: Switched to clocksource kvm-clock > VFS: Disk quotas dquot_6.6.0 > VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) > FS-Cache: Loaded > *** VALIDATE hugetlbfs *** > CacheFiles: Loaded > TOMOYO: 2.6.0 > Mandatory Access Control activated. > AppArmor: AppArmor Filesystem Enabled > pnp: PnP ACPI init > pnp: PnP ACPI: found 7 devices > thermal_sys: Registered thermal governor 'step_wise' > thermal_sys: Registered thermal governor 'user_space' > clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: > 2085701024 ns > pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] > pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] > pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] > pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfffff window] > NET: Registered protocol family 2 > tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes, > vmalloc) > TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) > TCP bind hash table entries: 65536 (order: 10, 4194304 bytes, vmalloc) > TCP: Hash tables configured (established 65536 bind 65536) > UDP hash table entries: 4096 (order: 7, 655360 bytes, vmalloc) > UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes, vmalloc) > NET: Registered protocol family 1 > RPC: Registered named UNIX socket transport module. > RPC: Registered udp transport module. > RPC: Registered tcp transport module. > RPC: Registered tcp NFSv4.1 backchannel transport module. > NET: Registered protocol family 44 > pci 0000:00:00.0: Limiting direct PCI/PCI transfers > PCI: CLS 0 bytes, default 64 > PCI-DMA: Using software bounce buffering for IO (SWIOTLB) > software IO TLB: mapped [mem 0xaa800000-0xae800000] (64MB) > RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl > timer > kvm: already loaded the other module > clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, > max_idle_ns: 440795277976 ns > clocksource: Switched to clocksource tsc > mce: Machine check injector initialized > check: Scanning for low memory corruption every 60 seconds > Initialise system trusted keyrings > workingset: timestamp_bits=40 max_order=21 bucket_order=0 > zbud: loaded > DLM installed > squashfs: version 4.0 (2009/01/31) Phillip Lougher > FS-Cache: Netfs 'nfs' registered for caching > NFS: Registering the id_resolver key type > Key type id_resolver registered > Key type id_legacy registered > nfs4filelayout_init: NFSv4 File Layout Driver Registering... > Installing knfsd (copyright (C) 1996 okir@monad.swb.de). > ntfs: driver 2.1.32 [Flags: R/W]. > fuse: init (API version 7.31) > JFS: nTxBlock = 8192, nTxLock = 65536 > SGI XFS with ACLs, security attributes, realtime, no debug enabled > 9p: Installing v9fs 9p2000 file system support > FS-Cache: Netfs '9p' registered for caching > gfs2: GFS2 installed > FS-Cache: Netfs 'ceph' registered for caching > ceph: loaded (mds proto 32) > NET: Registered protocol family 38 > async_tx: api initialized (async) > Key type asymmetric registered > Asymmetric key parser 'x509' registered > Asymmetric key parser 'pkcs8' registered > Key type pkcs7_test registered > Asymmetric key parser 'tpm_parser' registered > Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246) > io scheduler mq-deadline registered > io scheduler kyber registered > io scheduler bfq registered > input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 > ACPI: Power Button [PWRF] > input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 > ACPI: Sleep Button [SLPF] > ioatdma: Intel(R) QuickData Technology Driver 5.00 > PCI Interrupt Link [LNKC] enabled at IRQ 11 > virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver > PCI Interrupt Link [LNKD] enabled at IRQ 10 > virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver > HDLC line discipline maxframe=4096 > N_HDLC line discipline registered. > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A > 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A > Non-volatile memory driver v1.3 > Linux agpgart interface v0.103 > [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 > [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [drm] Driver supports precise vblank timestamp query. > [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 > usbcore: registered new interface driver udl > brd: module loaded > loop: module loaded > zram: Added device: zram0 > null: module loaded > nfcsim 0.2 initialized > Loading iSCSI transport class v2.0-870. > scsi host0: Virtio SCSI HBA > st: Version 20160209, fixed bufsize 32768, s/g segs 256 > kobject: 'st' (000000004c8d7e58): fill_kobj_path: path = > '/bus/scsi/drivers/st' > kobject: 'scsi_disk' (00000000bdfbce9c): kobject_add_internal: parent: > 'class', set: 'class' > kobject: 'scsi_disk' (00000000bdfbce9c): kobject_uevent_env > kobject: 'scsi_disk' (00000000bdfbce9c): fill_kobj_path: path = > '/class/scsi_disk' > kobject: 'sd' (0000000055985a2d): kobject_add_internal: parent: 'drivers', > set: 'drivers' > kobject: 'sd' (0000000055985a2d): kobject_uevent_env > kobject: 'sd' (0000000055985a2d): fill_kobj_path: path = > '/bus/scsi/drivers/sd' > kobject: 'sr' (000000004054170b): kobject_add_internal: parent: 'drivers', > set: 'drivers' > kobject: 'sr' (000000004054170b): kobject_uevent_env > kobject: 'sr' (000000004054170b): fill_kobj_path: path = > '/bus/scsi/drivers/sr' > kobject: 'scsi_generic' (0000000098f3b229): kobject_add_internal: parent: > 'class', set: 'class' > kobject: 'scsi_generic' (0000000098f3b229): kobject_uevent_env > kobject: 'scsi_generic' (0000000098f3b229): fill_kobj_path: path = > '/class/scsi_generic' > kobject: 'nvme-wq' (00000000270c2331): kobject_add_internal: parent: > 'workqueue', set: 'devices' > kobject: 'nvme-wq' (00000000270c2331): kobject_uevent_env > kobject: 'nvme-wq' (00000000270c2331): kobject_uevent_env: uevent_suppress > caused the event to drop! > kobject: 'nvme-wq' (00000000270c2331): kobject_uevent_env > kobject: 'nvme-wq' (00000000270c2331): fill_kobj_path: path = > '/devices/virtual/workqueue/nvme-wq' > kobject: 'nvme-reset-wq' (000000003e1ba3d5): kobject_add_internal: parent: > 'workqueue', set: 'devices' > kobject: 'nvme-reset-wq' (000000003e1ba3d5): kobject_uevent_env > kobject: 'nvme-reset-wq' (000000003e1ba3d5): kobject_uevent_env: > uevent_suppress caused the event to drop! > kobject: 'nvme-reset-wq' (000000003e1ba3d5): kobject_uevent_env > kobject: 'nvme-reset-wq' (000000003e1ba3d5): fill_kobj_path: path = > '/devices/virtual/workqueue/nvme-reset-wq' > kobject: 'nvme-delete-wq' (000000005497d244): kobject_add_internal: parent: > 'workqueue', set: 'devices' > kobject: 'nvme-delete-wq' (000000005497d244): kobject_uevent_env > kobject: 'nvme-delete-wq' (000000005497d244): kobject_uevent_env: > uevent_suppress caused the event to drop! > kobject: 'nvme-delete-wq' (000000005497d244): kobject_uevent_env > kobject: 'nvme-delete-wq' (000000005497d244): fill_kobj_path: path = > '/devices/virtual/workqueue/nvme-delete-wq' > kobject: 'nvme' (000000008e6a29d7): kobject_add_internal: parent: 'class', > set: 'class' > kobject: 'nvme' (000000008e6a29d7): kobject_uevent_env > kobject: 'nvme' (000000008e6a29d7): fill_kobj_path: path = '/class/nvme' > kobject: 'nvme-subsystem' (000000001563dbee): kobject_add_internal: parent: > 'class', set: 'class' > kobject: 'nvme-subsystem' (000000001563dbee): kobject_uevent_env > kobject: 'nvme-subsystem' (000000001563dbee): fill_kobj_path: path = > '/class/nvme-subsystem' > kobject: 'nvme' (00000000c52b7e0e): kobject_add_internal: parent: 'drivers', > set: 'drivers' > kobject: 'drivers' (00000000f6d3710d): kobject_add_internal: parent: 'nvme', > set: '' > kobject: 'nvme' (00000000c52b7e0e): kobject_uevent_env > kobject: 'nvme' (00000000c52b7e0e): fill_kobj_path: path = > '/bus/pci/drivers/nvme' > kobject: 'ahci' (00000000a29e777d): kobject_add_internal: parent: 'drivers', > set: 'drivers' > kobject: 'drivers' (000000003ed63ce6): kobject_add_internal: parent: 'ahci', > set: '' > kobject: 'ahci' (00000000a29e777d): kobject_uevent_env > kobject: 'ahci' (00000000a29e777d): fill_kobj_path: path = > '/bus/pci/drivers/ahci' > kobject: 'ata_piix' (0000000087185d26): kobject_add_internal: parent: > 'drivers', set: 'drivers' > kobject: 'drivers' (000000004a065e79): kobject_add_internal: parent: > 'ata_piix', set: '' > kobject: 'ata_piix' (0000000087185d26): kobject_uevent_env > kobject: 'ata_piix' (0000000087185d26): fill_kobj_path: path = > '/bus/pci/drivers/ata_piix' > kobject: 'pata_amd' (00000000519c7b49): kobject_add_internal: parent: > 'drivers', set: 'drivers' > kobject: 'drivers' (00000000cb24f8fd): kobject_add_internal: parent: > 'pata_amd', set: '' > kobject: 'pata_amd' (00000000519c7b49): kobject_uevent_env > > > --- > This bug is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/00000000000073c94b058e536fc4%40google.com. #syz dup: linux-next boot error: WARNING: workqueue cpumask: online intersect > possible intersect