From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Crash on kvm_iommu_map_pages Date: Mon, 01 Nov 2010 13:51:27 +0100 Message-ID: <4CCEB7CF.8030207@web.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig29A2BA92D8CC2238864D4330" Cc: Sheng Yang , Joerg Roedel To: kvm Return-path: Received: from fmmailgate02.web.de ([217.72.192.227]:47064 "EHLO fmmailgate02.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755940Ab0KAMv3 (ORCPT ); Mon, 1 Nov 2010 08:51:29 -0400 Sender: kvm-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig29A2BA92D8CC2238864D4330 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Hi again, OK, I swapped those two lines in intel_iommu_attach_device [1], fixed another warning in the wbinvd emulation, but now I'm about to give up. This is freaky MMU stuff: general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC last sysfs file: /sys/devices/pci0000:00/0000:00:1a.0/device CPU 1=20 Modules linked in: kvm_intel kvm bluetooth snd_pcm_oss snd_mixer_oss snd_= seq snd_seq_device edd ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6ta= ble_raw xt_NOTRACK ipt_REJECT xt_state iptable_raw iptable_filter ip6tabl= e_mangle nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack nf_defrag= _ipv4 ip_tables ip6table_filter ip6_tables x_tables ipv6 fuse loop mac802= 11 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec a= th9k_common ath9k_hw snd_hwdep snd_pcm snd_timer snd ath pcmcia cfg80211 = sdhci_pci tpm_infineon sdhci yenta_socket firewire_ohci tpm_tis mmc_core = soundcore e1000e sg pcmcia_rsrc tpm firewire_core iTCO_wdt video snd_page= _alloc pcmcia_core i2c_i801 rfkill tpm_bios intel_agp output fujitsu_lapt= op iTCO_vendor_support i2c_core serio_raw pcspkr led_class joydev crc_itu= _t button battery intel_gtt ac ext4 mbcache jbd2 crc16 sha256_generic aes= _x86_64 aes_generic cbc dm_crypt linear sd_mod crc_t10dif dm_snapshot dm_= mod fan processor ahci libahci ata_generi c liba ta scsi_mod thermal thermal_sys hwmon Nov 1 13:19:11 mchn199C kernel: Pid: 2248, comm: qemu-system-x86 Not tainted 2.6.36+ #12 FJNB211W/CELSIUS= H700 RIP: 0010:[] [] pfn_to_dma_pte+0x73/= 0x190 RSP: 0018:ffff8800bd4bdb68 EFLAGS: 00010202 RAX: ffff1000bd4fe000 RBX: ffff1000bd4fec00 RCX: 0000000000000009 RDX: 0000000000000180 RSI: ffff88012a940938 RDI: 0000000000000202 RBP: ffff8800bd4bdba8 R08: ffffea00025ac2a0 R09: 0000000000000004 R10: 0000000000000001 R11: 0000000000000000 R12: ffff880128dfee00 R13: 0000000000000002 R14: 00000000000f0000 R15: 0000000000000009 FS: 00007f4990d33710(0000) GS:ffff8800be680000(0000) knlGS:0000000000000= 000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000001408000 CR3: 00000000bd7db000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process qemu-system-x86 (pid: 2248, threadinfo ffff8800bd4bc000, task fff= f88012a940000) Stack: ffff8800bd4bdb88 ffff8800ac378000 00000000000000d2 00000000000f0000 <0> ffff8800bd4bdce8 ffff8800ac2fc000 0000000000000003 00000000000f0001 <0> ffff8800bd4bdbb8 ffffffff8121dfbe ffff8800bd4bdbc8 ffffffff812a9573 Call Trace: [] intel_iommu_iova_to_phys+0x15/0x2a [] iommu_iova_to_phys+0x13/0x15 [] kvm_iommu_map_pages+0x77/0x194 [kvm] [] ? __vmalloc_node+0x86/0x9b [] __kvm_set_memory_region+0x4e5/0x787 [kvm] [] ? mark_held_locks+0x50/0x72 [] ? mutex_lock_nested+0x325/0x34d [] kvm_set_memory_region+0x37/0x50 [kvm] [] kvm_vm_ioctl_set_memory_region+0x18/0x1a [kvm] [] kvm_vm_ioctl+0x22d/0x3b1 [kvm] [] ? fget_light+0x17b/0x31f [] do_vfs_ioctl+0x4c6/0x507 [] ? fget_light+0x303/0x31f [] ? fget_light+0x17b/0x31f [] ? retint_swapgs+0x13/0x1b [] sys_ioctl+0x56/0x7c [] system_call_fastpath+0x16/0x1b Code: c7 31 db 47 8d 3c ff e9 1d 01 00 00 0f 0b 4c 89 f2 44 88 f9 48 d3 e= a 81 e2 ff 01 00 00 41 83 fd 01 48 8d 1c d0 0f 84 0b 01 00 00 03 03 = 0f 85 d8 00 00 00 41 8b 44 24 04 85 c0 79 08 65 8b 04=20 RIP [] pfn_to_dma_pte+0x73/0x190 RSP Can anyone parse this? Is it Intel-specific or a generic issue? The kernel is current kvm.git + unrelated patch + [1]. Jan [1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/61923 --------------enig29A2BA92D8CC2238864D4330 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAkzOt88ACgkQitSsb3rl5xR67ACfYM8yAZTEG/5GUBOW5SQijBN4 Js8AoKLSohesq+wjsQoSSCXqYpJp+v5F =T/7W -----END PGP SIGNATURE----- --------------enig29A2BA92D8CC2238864D4330--