From patchwork Tue Aug 18 13:01:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 276212 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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 42EDFC433DF for ; Tue, 18 Aug 2020 13:03:04 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 03BF1208C7 for ; Tue, 18 Aug 2020 13:03:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BYyHthTn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03BF1208C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k81GZ-0005fR-5V for qemu-devel@archiver.kernel.org; Tue, 18 Aug 2020 09:03:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41712) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k81Fs-0004pW-9p for qemu-devel@nongnu.org; Tue, 18 Aug 2020 09:02:20 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:55201 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1k81Fq-0006yb-Cj for qemu-devel@nongnu.org; Tue, 18 Aug 2020 09:02:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597755737; h=from:from: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; bh=NafM+xos7PPV3RZ6ZoeA03/sL+thPf901CTJDIgcCBA=; b=BYyHthTnBonkWXXehI0pPSGV8SZIh5VtAyMsZXq+YVv1tEoES3I5bANpgWqIhTE+6kbLtA qkzk02gBlLp244bOIb8cwU3K53lRS1lpexAx1NFDsnn8AfleIM5pcBRZ8V446uEP9T6eDa rhUo7qaUbnYu1lDt4eQJias9OMexZgI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-25-CZ5lcesiORWYx6rOKluGog-1; Tue, 18 Aug 2020 09:02:15 -0400 X-MC-Unique: CZ5lcesiORWYx6rOKluGog-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 46AA618686D5; Tue, 18 Aug 2020 13:02:14 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-114-202.ams2.redhat.com [10.36.114.202]) by smtp.corp.redhat.com (Postfix) with ESMTP id 61E14BA63; Tue, 18 Aug 2020 13:01:54 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org, Peter Xu Subject: [RFC v4 0/2] memory: Delete assertion in memory_region_unregister_iommu_notifier Date: Tue, 18 Aug 2020 15:01:49 +0200 Message-Id: <20200818130151.31678-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Received-SPF: none client-ip=207.211.31.120; envelope-from=eperezma@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/18 06:40:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Yan Zhao , Eduardo Habkost , "Michael S. Tsirkin" , Jason Wang , Juan Quintela , Eric Auger , qemu-arm@nongnu.org, Avi Kivity , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" I am able to hit this assertion when a Red Hat 7 guest virtio_net device raises an "Invalidation" of all the TLB entries. This happens in the guest's startup if 'intel_iommu=on' argument is passed to the guest kernel and right IOMMU/ATS devices are declared in qemu's command line. Command line: /home/qemu/x86_64-softmmu/qemu-system-x86_64 -name \ guest=rhel7-test,debug-threads=on -machine \ pc-q35-5.1,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split \ -cpu \ Broadwell,vme=on,ss=on,vmx=on,f16c=on,rdrand=on,hypervisor=on,arat=on,tsc-adjust=on,umip=on,arch-capabilities=on,xsaveopt=on,pdpe1gb=on,abm=on,skip-l1dfl-vmentry=on,rtm=on,hle=on \ -m 8096 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid \ d022ecbf-679e-4755-87ce-eb87fc5bbc5d -display none -no-user-config \ -nodefaults -rtc base=utc,driftfix=slew -global \ kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -global \ ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on \ -device intel-iommu,intremap=on,device-iotlb=on -device \ pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1 \ -device \ pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \ -device \ pcie-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \ -device \ pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \ -device \ pcie-root-port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 \ -device \ pcie-root-port,port=0xd,chassis=6,id=pci.6,bus=pcie.0,addr=0x1.0x5 \ -device \ pcie-root-port,port=0xe,chassis=7,id=pci.7,bus=pcie.0,addr=0x1.0x6 \ -device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device \ virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -drive \ file=/home/virtio-test2.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 \ -device \ virtio-blk-pci,scsi=off,bus=pci.4,addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \ -netdev tap,id=hostnet0,vhost=on,vhostforce=on -device \ virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:1d:f2,bus=pci.1,addr=0x0,iommu_platform=on,ats=on \ -device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 -object \ rng-random,id=objrng0,filename=/dev/urandom -device \ virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.6,addr=0x0 -s -msg \ timestamp=on #0 0x00007ffff521370f in raise () at /lib64/libc.so.6 #1 0x00007ffff51fdb25 in abort () at /lib64/libc.so.6 #2 0x00007ffff51fd9f9 in _nl_load_domain.cold.0 () at /lib64/libc.so.6 #3 0x00007ffff520bcc6 in .annobin_assert.c_end () at /lib64/libc.so.6 #4 0x0000555555888171 in memory_region_notify_one (notifier=0x7ffde0487fa8, entry=0x7ffde5dfe200) at /home/qemu/memory.c:1918 #5 0x0000555555888247 in memory_region_notify_iommu (iommu_mr=0x555556f6c0b0, iommu_idx=0, entry=...) at /home/qemu/memory.c:1941 #6 0x0000555555951c8d in vtd_process_device_iotlb_desc (s=0x555557609000, inv_desc=0x7ffde5dfe2d0) at /home/qemu/hw/i386/intel_iommu.c:2468 #7 0x0000555555951e6a in vtd_process_inv_desc (s=0x555557609000) at /home/qemu/hw/i386/intel_iommu.c:2531 #8 0x0000555555951fa5 in vtd_fetch_inv_desc (s=0x555557609000) at /home/qemu/hw/i386/intel_iommu.c:2563 #9 0x00005555559520e5 in vtd_handle_iqt_write (s=0x555557609000) at /home/qemu/hw/i386/intel_iommu.c:2590 #10 0x0000555555952b45 in vtd_mem_write (opaque=0x555557609000, addr=136, val=2688, size=4) at /home/qemu/hw/i386/intel_iommu.c:2837 #11 0x0000555555883e17 in memory_region_write_accessor (mr=0x555557609330, addr=136, value=0x7ffde5dfe478, size=4, shift=0, mask=4294967295, attrs=...) at /home/qemu/memory.c:483 #12 0x000055555588401d in access_with_adjusted_size (addr=136, value=0x7ffde5dfe478, size=4, access_size_min=4, access_size_max=8, access_fn= 0x555555883d38 , mr=0x555557609330, attrs=...) at /home/qemu/memory.c:544 #13 0x0000555555886f37 in memory_region_dispatch_write (mr=0x555557609330, addr=136, data=2688, op=MO_32, attrs=...) at /home/qemu/memory.c:1476 #14 0x0000555555827a03 in flatview_write_continue (fv=0x7ffdd8503150, addr=4275634312, attrs=..., ptr=0x7ffff7ff0028, len=4, addr1=136, l=4, mr=0x555557609330) at /home/qemu/exec.c:3146 #15 0x0000555555827b48 in flatview_write (fv=0x7ffdd8503150, addr=4275634312, attrs=..., buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3186 #16 0x0000555555827e9d in address_space_write (as=0x5555567ca640 , addr=4275634312, attrs=..., buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3277 #17 0x0000555555827f0a in address_space_rw (as=0x5555567ca640 , addr=4275634312, attrs=..., buf=0x7ffff7ff0028, len=4, is_write=true) at /home/qemu/exec.c:3287 #18 0x000055555589b633 in kvm_cpu_exec (cpu=0x555556b65640) at /home/qemu/accel/kvm/kvm-all.c:2511 #19 0x0000555555876ba8 in qemu_kvm_cpu_thread_fn (arg=0x555556b65640) at /home/qemu/cpus.c:1284 #20 0x0000555555dafff1 in qemu_thread_start (args=0x555556b8c3b0) at util/qemu-thread-posix.c:521 #21 0x00007ffff55a62de in start_thread () at /lib64/libpthread.so.0 #22 0x00007ffff52d7e83 in clone () at /lib64/libc.so.6 (gdb) frame 4 #4 0x0000555555888171 in memory_region_notify_one (notifier=0x7ffde0487fa8, entry=0x7ffde5dfe200) at /home/qemu/memory.c:1918 1918 assert(entry->iova >= notifier->start && entry_end <= notifier->end); (gdb) p *entry $1 = {target_as = 0x555556f6c050, iova = 0, translated_addr = 0, addr_mask = 18446744073709551615, perm = IOMMU_NONE} --- Tested with vhost-net, with a linux bridge to forward packets. Forwarding with vhostuser interfaces + dpdk-testpmd io forwarding mode seems broken also in v5.1.0-rc3. v4: Rename IOMMU_NOTIFIER_IOTLB -> IOMMU_NOTIFIER_DEVIOTLB. Make vhost-net notifier just IOMMU_NOTIFIER_DEVIOTLB, not IOMMU_NOTIFIER_UNMAP v3: Skip the assertion in case notifier is a IOTLB one, since they can manage arbitrary ranges. Using a flag in the notifier for now, as Peter suggested. v2: Actually delete assertion instead of just commenting out using C99 Eugenio Pérez (2): memory: Rename memory_region_notify_one to memory_region_notify_one_iommu memory: Skip bad range assertion if notifier is DEVIOTLB type hw/arm/smmu-common.c | 2 +- hw/arm/smmuv3.c | 2 +- hw/i386/intel_iommu.c | 4 ++-- hw/virtio/vhost.c | 2 +- include/exec/memory.h | 8 +++++--- softmmu/memory.c | 21 ++++++++++++++++----- 6 files changed, 26 insertions(+), 13 deletions(-)