Description of problem: ----------- [cut here ] --------- [please bite here ] --------- Kernel BUG at drivers/xen/netback/loopback.c:100 invalid opcode: 0000 [1] SMP last sysfs file: /class/net/eth0/address CPU 0 Modules linked in: ipt_MASQUERADE iptable_nat ip_nat xt_state ip_conntrack nfnetlink ipt_REJECT xt_tcpudp iptable_filter ip_tables netloop x_tables netbk blktap blkbk bridge autofs4 hidp rfcomm l2cap bluetooth lockd sunrpc ipv6 xfrm_nalgo crypto_api ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi2 scsi_transport_iscsi2 scsi_transport_iscsi cpufreq_ondemand acpi_cpufreq freq_table dm_multipath scsi_dh video hwmon backlight sbs i2c_ec button battery asus_acpi ac parport_pc lp parport i2c_i801 sr_mod cdrom igb serio_raw i2c_core 8021q serial_core shpchp sg pcspkr dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod ahci libata sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd Pid: 0, comm: swapper Not tainted 2.6.18-152.el5xen #1 RIP: e030:[<ffffffff885c00c6>] [<ffffffff885c00c6>] :netloop:loopback_start_xmit+0x20/0x2f6 RSP: e02b:ffffffff8067cc90 EFLAGS: 00010282 RAX: ffff8805c44d7c80 RBX: ffff8805c8acea80 RCX: 0000000000000022 RDX: 0000000000000022 RSI: ffff8805c5bd5000 RDI: ffff8805c8acea80 RBP: ffff8805c5bd5000 R08: 0000000000000000 R09: ffffffff88543cea R10: 0000000080000000 R11: ffffffff885c00a6 R12: ffff8805c5bd5200 R13: ffff8805c5bd5500 R14: 0000000000000000 R15: 0000000000000000 FS: 00002b0b920f7190(0000) GS:ffffffff805c9000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 Process swapper (pid: 0, threadinfo ffffffff8063a000, task ffffffff804edb00) Stack: ffff8805c8acea80 ffff8805c5bd5000 ffff8805c5bd5200 ffff8805c44d7c22 0000000000000000 ffffffff802314e6 ffff8805c8acea80 ffff8805b98e5500 ffff8805c8acea80 ffffffff88543e8e Call Trace: <IRQ> [<ffffffff802314e6>] dev_queue_xmit+0x2d4/0x395 [<ffffffff88543e8e>] :bridge:br_dev_queue_push_xmit+0x1a4/0x1cb [<ffffffff88543f04>] :bridge:br_forward_finish+0x4f/0x51 [<ffffffff88543f70>] :bridge:__br_forward+0x6a/0x6d [<ffffffff885449c2>] :bridge:br_handle_frame_finish+0xd4/0xf8 [<ffffffff88544b6b>] :bridge:br_handle_frame+0x185/0x1a2 [<ffffffff8043ede7>] tcp_gro_receive+0x1b5/0x233 [<ffffffff802216fe>] netif_receive_skb+0x328/0x3f2 [<ffffffff80419dcc>] dev_gro_receive+0xf0/0x209 [<ffffffff80419fdd>] napi_gro_receive+0x20/0x2f [<ffffffff8820c9ac>] :igb:igb_poll+0x494/0x960 [<ffffffff8020d53a>] net_rx_action+0xa8/0x1c1 [<ffffffff8820b9c9>] :igb:igb_xmit_frame_adv+0x0/0x6e2 [<ffffffff8021339c>] __do_softirq+0x8d/0x13b [<ffffffff80260da4>] call_softirq+0x1c/0x278 [<ffffffff8026e0c7>] do_softirq+0x31/0x98 [<ffffffff8026df53>] do_IRQ+0xec/0xf5 [<ffffffff803aecbb>] evtchn_do_upcall+0x13b/0x1fb [<ffffffff802608d6>] do_hypervisor_callback+0x1e/0x2c <EOI> [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000 [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000 [<ffffffff802999bf>] rcu_pending+0x26/0x50 [<ffffffff8026f4f1>] raw_safe_halt+0x84/0xa8 [<ffffffff8026ca6c>] xen_idle+0x38/0x4a [<ffffffff8024b130>] cpu_idle+0x97/0xba [<ffffffff80644b09>] start_kernel+0x21f/0x224 [<ffffffff806441e5>] _sinittext+0x1e5/0x1eb Code: 0f 0b 68 3f 04 5c 88 c2 64 00 f6 83 9c 00 00 00 02 74 20 8b RIP [<ffffffff885c00c6>] :netloop:loopback_start_xmit+0x20/0x2f6 RSP <ffffffff8067cc90> <0>Kernel panic - not syncing: Fatal exception (XEN) Domain 0 crashed: rebooting machine in 5 seconds. Version-Release number of selected component (if applicable): RHEL5.4-Server-20090608.0 tree It was on this box: http://lab.rhts.bos.redhat.com/cgi-bin/rhts/system.cgi?id=1106 How reproducible: Very. Steps to Reproduce: 1. Just install and boot on the said box. It seems like installation went fine but when booting during the rhts service startup time , it'd panicking. 2. 3. Actual results: Expected results: Additional info:
This is the same crash that Don saw earlier. The patch is already posted.
Should be fixed in -153 in fact.
*** This bug has been marked as a duplicate of bug 499347 ***
*** Bug 507189 has been marked as a duplicate of this bug. ***