Hi all: kernel: 3.0.93-0.8-default qemu: 1.5 crash log: [134397.708857] BUG: unable to handle kernel NULL pointer dereference at 0000000000000012 [134397.717334] IP: [] iommu_disable_dev_iotlb+0x15/0x30 [134397.724268] PGD 0 [134397.726686] Oops: 0000 [#1] SMP [134397.730335] kbox: Begin to handle event info [134397.734992] kbox: kbox: Enter into handle die dump while current state:Dump State Init [134397.751054] [134398.043275] kbox: End handling event info [134398.047757] CPU 1 [134398.049678] Modules linked in: mlx4_en(FX) mlx4_core(FX) compat(FX) openvswitch crc32c libcrc32c gre nm_dev(FN) ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables uvpdump i [134398.125560] Supported: No, Unsupported modules are loaded [134398.131338] [134398.133220] Pid: 183980, comm: qemu-kvm Tainted: GF NX 3.0.93-0.8-default #1 HUAWEI TECHNOLOGIES CO.,LTD. CH80TXSUA/CH80TXSUA [134398.146013] RIP: 0010:[] [] iommu_disable_dev_iotlb+0x15/0x30 [134398.155649] RSP: 0018:ffff8817f0e13be0 EFLAGS: 00010202 [134398.161342] RAX: 0000000000000002 RBX: ffff880bf34e6600 RCX: 0000000000000007 [134398.169158] RDX: ffff880bf34e6650 RSI: 0000000000000292 RDI: ffff880bf2011000 [134398.176970] RBP: 0000000000000000 R08: dead000000200200 R09: dead000000100100 [134398.184793] R10: ffff8817f5d4c380 R11: ffffffff8128e350 R12: ffff880bf34e6640 [134398.192549] R13: ffff880bf5d3de80 R14: ffff880653e4a000 R15: ffff880bf34d7858 [134398.200360] FS: 00007f6d17fff980(0000) GS:ffff880c3ee20000(0000) knlGS:0000000000000000 [134398.209109] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [134398.215223] CR2: 0000000000000012 CR3: 000000096ed95000 CR4: 00000000001427e0 [134398.223000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [134398.230812] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [134398.238630] Process qemu-kvm (pid: 183980, threadinfo ffff8817f0e12000, task ffff8817804ac300) [134398.247906] Stack: [134398.250260] ffffffff8128f756 00000000ffffffed ffff880bf34d7840 0000000000000292 [134398.258383] ffff880bf34d7640 ffff880653e4a090 00000000ffffffed ffff880653e4a000 [134398.266509] ffff880653e4a000 ffff880bee6c4878 ffffffff812938c6 ffff880bebe17d60 [134398.274659] Call Trace: [134398.277503] [] domain_remove_one_dev_info+0x156/0x280 [134398.284582] [] intel_iommu_attach_device+0x156/0x170 [134398.291583] [] kvm_assign_device+0x73/0x150 [kvm] [134398.298360] [] kvm_vm_ioctl_assign_device+0x247/0x3c0 [kvm] [134398.306303] [] kvm_vm_ioctl_assigned_device+0x2fc/0x6a0 [kvm] [134398.314401] [] kvm_vm_ioctl+0x101/0x300 [kvm] [134398.320789] [] do_vfs_ioctl+0x8b/0x3b0 [134398.326566] [] sys_ioctl+0xa1/0xb0 [134398.331996] [] system_call_fastpath+0x16/0x1b [134398.338376] [<00007f6d15b77e57>] 0x7f6d15b77e56 [134398.343373] Code: c6 05 97 dc de 00 01 eb a7 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 8b 7f 28 48 85 ff 74 12 48 8b 87 30 09 00 00 48 85 c0 74 06 40 10 01 75 05 f3 c3 0f 1f 00 e9 ab 61 00 00 66 66 [134398.364424] RIP [] iommu_disable_dev_iotlb+0x15/0x30 [134398.371441] RSP [134398.375314] CR2: 0000000000000012 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
