On Wed, Jan 16, 2013 at 04:42:38PM +0200, Michael S. Tsirkin wrote: > > > First test: > > > > > > - kvm.git kernel > > > - 2 kvm guest running: > > > - Linux (in idle) > > > - Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world > > > and kernel build) > > > - KVM host hangs after about 5 hours > > > - nothing special in system logs > > > - message caught on one of the active SSH session: > > > > > > kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s! > > > [vhost-3686:3700] > > > > > > Second test: > > > > > > - kvm.git kernel > > > - 1 kvm guest running: > > > - Linux (at the time of hang -- in idle) > > > - about 10 minutes before KVM host hangs -- load about 6 (kernel build) > > > - in system logs: > > > > > > BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800] > > > Modules linked in: binfmt_misc ip6table_filter ip6_tables > > > ebtable_nat ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4 > > > xt_state nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc > > > be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 > > > mdio libcxgbi ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm > > > ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi > > > scsi_transport_iscsi ioatdma vhost_net iTCO_wdt iTCO_vendor_support > > > ses lpc_ich tun macvtap macvlan mfd_core enclosure bnx2 joydev > > > i7core_edac dca edac_core wmi coretemp dcdbas kvm_intel pcspkr > > > crc32c_intel kvm serio_raw acpi_power_meter microcode uinput > > > ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas > > > CPU 0 > > > Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc. > > > PowerEdge R610/086HF8 > > > RIP: 0010:[<ffffffff8152876f>] [<ffffffff8152876f>] > > > skb_flow_dissect+0xbf/0x3e0 > > > RSP: 0018:ffff88042145dbd8 EFLAGS: 00000246 > > > RAX: 0000000000000000 RBX: ffff8807fa489c00 RCX: f7ab0c277df5b6fd > > > RDX: ffff880820c59800 RSI: ffff88042145dc58 RDI: ffff8807fa489c00 > > > RBP: ffff88042145dc48 R08: 0000000000000404 R09: 0000000000000412 > > > R10: ffff8807fa489c00 R11: 0000000000000412 R12: ffffffff81522a57 > > > R13: 0000000000000000 R14: ffffffff81521fdc R15: ffff88042145db78 > > > FS: 0000000000000000(0000) GS:ffff88083fc00000(0000) knlGS:0000000000000000 > > > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > > CR2: 0000000001c0e9f4 CR3: 0000000827973000 CR4: 00000000000027e0 > > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > > > Process vhost-1771 (pid: 1800, threadinfo ffff88042145c000, task > > > ffff880421151740) > > > Stack: > > > ffff88042145dc78 0000000000000412 0000000000000000 0000000000000412 > > > 000000000000000c ffff880422570800 ffff88042145dc78 ffffffff81525881 > > > 0000000000000000 00000000de057f32 ffff8807fa489c00 0000000000000412 > > > Call Trace: > > > [<ffffffff81525881>] ? skb_copy_datagram_from_iovec+0x61/0x280 > > > [<ffffffff8152a06a>] __skb_get_rxhash+0x1a/0xd0 > > > [<ffffffffa01109e0>] tun_get_user+0x3e0/0x760 [tun] > > > [<ffffffffa0110dba>] tun_sendmsg+0x5a/0x80 [tun] > > > [<ffffffffa013cd2a>] handle_tx+0x28a/0x680 [vhost_net] > > > [<ffffffffa013d155>] handle_tx_kick+0x15/0x20 [vhost_net] > > > [<ffffffffa013995d>] vhost_worker+0xed/0x190 [vhost_net] > > > [<ffffffffa0139870>] ? vhost_work_flush+0x110/0x110 [vhost_net] > > > [<ffffffff81081750>] kthread+0xc0/0xd0 > > > [<ffffffff81010000>] ? ftrace_define_fields_xen_mc_entry+0x50/0xf0 > > > [<ffffffff81081690>] ? kthread_create_on_node+0x120/0x120 > > > [<ffffffff8163feac>] ret_from_fork+0x7c/0xb0 > > > [<ffffffff81081690>] ? kthread_create_on_node+0x120/0x120 > > > Code: 68 41 2b 44 24 6c 29 d8 83 f8 13 0f 8e eb 00 00 00 48 63 d3 49 > > > 03 94 24 e8 00 00 00 48 85 d2 74 b0 31 c0 66 f7 42 06 3f ff 75 04 > > > <0f> b6 42 09 48 8b 4a 0c 49 89 0e 0f b6 12 83 e2 0f 8d 1c 93 eb > > > > > > repeated several times with similar content > > > > > > -- > > > Artur > > > Looks like this? > https://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=commit;h=76fe45812a3b134c39170ca32dfd4b7217d33145 > Artur, Can you please apply this fix on top of kvm.git/queue and try again. -- Gleb. -- 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
