Red Hat Bugzilla – Bug 509207
VT-d BUG() during normal traffic in ixgbe device
Last modified: 2009-09-03 09:50:13 EDT
Description of problem: We're hitting a BUG() in VT-d code triggered as soon as sending any amount of real traffic through the ixgbe device (normal ping is not sufficient). Version-Release number of selected component (if applicable): kernel-15x (seemed to come w/ the recent ixgbe update) How reproducible: Every time Steps to Reproduce: 1. boot kernel with intel_iommu=on 2. generate traffic (say netperf TCP_STREAM test) over ixgbe device 3. BUG() Actual results: Kills the host Expected results: Traffic completes, no BUG() Additional info: ----------- [cut here ] --------- [please bite here ] --------- Kernel BUG at drivers/pci/intel-iommu.c:1521 invalid opcode: 0000 [1] SMP last sysfs file: /devices/pci0000:00/0000:00:00.0/resource CPU 0 Modules linked in: ipv6 xfrm_nalgo crypto_api autofs4 hidp rfcomm l2cap bluetooth sunrpc cpufreq_ondemand acpi_cpufreq freq_table dm_multipath scsi_dh video hwmon backlight sbs i2c_ec button battery asus_acpi acpi_memhotplug ac parport_pc lp parport ksm(U) kvm_intel(U) kvm(U) joydev ixgbe igb i2c_i801 sr_mod cdrom 8021q i2c_core shpchp sg pcspkr serio_raw 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 Tainted: G 2.6.18-156.el5 #1 RIP: 0010:[<ffffffff80160f65>] [<ffffffff80160f65>] domain_page_mapping+0x9a/0xff RSP: 0018:ffffffff8043dd60 EFLAGS: 00010206 RAX: 00000001b3899002 RBX: 00000000001aacc4 RCX: ffff8101bf9fc80c RDX: 00000001b3898000 RSI: ffff8101b3898ff0 RDI: ffff8101bf9fc808 RBP: 00000001aacc4000 R08: 0000000000000002 R09: 00000001aacc4000 R10: 0000000000000002 R11: ffff8101c54ea000 R12: 00000000001aacc5 R13: 0000000000000002 R14: ffff8101bf9fc7c0 R15: 00000000001aacc4 FS: 0000000000000000(0000) GS:ffffffff803c1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 000000000627d768 CR3: 00000001a2436000 CR4: 00000000000026e0 Process swapper (pid: 0, threadinfo ffffffff803f2000, task ffffffff80300ae0) Stack: 00000000efffe000 0000000000001000 00000001aacc4000 ffff8101bf9fc7c0 00000000efffe000 ffff8101bae6c980 0000000000000002 ffffffff80162c52 ffff8101c54ea000 ffff8101bfd80c40 0000000000000000 ffffc20010210fd8 Call Trace: <IRQ> [<ffffffff80162c52>] __intel_map_single+0xf0/0x171 [<ffffffff8822d2a3>] :ixgbe:ixgbe_alloc_rx_buffers+0x10c/0x23b [<ffffffff8822e14e>] :ixgbe:ixgbe_clean_rx_irq+0x736/0x781 [<ffffffff88231fa2>] :ixgbe:ixgbe_clean_rxonly+0x7e/0x126 [<ffffffff8000cf00>] net_rx_action+0xaa/0x1e3 [<ffffffff80012a0c>] __do_softirq+0x89/0x133 [<ffffffff8005f2fc>] call_softirq+0x1c/0x28 [<ffffffff8006db03>] do_softirq+0x2c/0x85 [<ffffffff8005ec8e>] apic_timer_interrupt+0x66/0x6c <EOI> [<ffffffff80198419>] acpi_processor_idle+0x274/0x463 [<ffffffff8019840f>] acpi_processor_idle+0x26a/0x463 [<ffffffff801981a5>] acpi_processor_idle+0x0/0x463 [<ffffffff801981a5>] acpi_processor_idle+0x0/0x463 [<ffffffff800499b7>] cpu_idle+0x95/0xb8 [<ffffffff803fd801>] start_kernel+0x220/0x225 [<ffffffff803fd22f>] _sinittext+0x22f/0x236 Code: 0f 0b 68 18 75 2b 80 c2 f1 05 48 89 ea 48 81 e2 00 f0 ff ff RIP [<ffffffff80160f65>] domain_page_mapping+0x9a/0xff RSP <ffffffff8043dd60> <0>Kernel panic - not syncing: Fatal exception
Created attachment 350205 [details] iova fix Here's the fix, it just went upstream.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
in kernel-2.6.18-158.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 Please do NOT transition this bugzilla state to VERIFIED until our QE team has sent specific instructions indicating when to do so. However feel free to provide a comment indicating that this fix has been verified.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2009-1243.html