[Fedora-xen] [BUG] [x86-32/PAE] modular netbk causes panic

Matt C wago at phlinux.com
Tue Aug 8 22:17:17 UTC 2006 

FYI, I've turned this into a Bugzilla as well:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=201796

-matt

On Mon, 7 Aug 2006, Matt C wrote:

> Hi All
>
> I'm not sure if this is related to the IA64 netbk kernel panic that was just 
> reported, but on my x86-32/PAE system, I'm seeing a crash as soon as netbk is 
> loaded in Dom0. I'm using a fresh FC5 system with all updates merged. 
> Specifically, the kernel is kernel-xen-2.6.17-1.2157_FC5 and xen is 
> xen-3.0.2-3.FC5.
>
> If I flip back to the kernel-xen0-2.6.17-1.2157_FC5 kernel (and non-PAE domU 
> kernel, of course), the network works perfectly all the way from domU to the 
> LAN.
>
> The hardware is a 2p Opteron system with 16GB of RAM. The NICs are broadcom 
> BCM5702s using the tg3 driver, for what it's worth.
>
> I have a machine dedicated to this testing, so I'm happy to test any other 
> kernels, configs, whatever else helps. I can throw this in bugzilla as well 
> if it'd be helpful, let me know.
>
> Thanks!
>
> -Matt
>
> Gory details below...
>
> -bash-3.1# modprobe netbk
> printk: 27 messages suppressed.
> modprobe: page allocation failure. order:8, mode:0xd0
> <c044844a> __alloc_pages+0x298/0x2ac  <c0448483> __get_free_pages+0x25/0x34
> <c0549ebe> balloon_alloc_empty_page_range+0x34/0x167  <c902c05b> 
> netback_init+0x5b/0x16d [netbk]
> <c902c0b1> netback_init+0xb1/0x16d [netbk]  <c042b092> 
> blocking_notifier_call_chain+0x31/0x48
> <c0438def> sys_init_module+0x15df/0x178a  <c05b115a> 
> register_netdevice+0x0/0x31a
> <c0404bff> syscall_call+0x7/0xb
> Mem-info:
> DMA per-cpu:
> cpu 0 hot: high 42, batch 7 used:2
> cpu 0 cold: high 14, batch 3 used:0
> cpu 1 hot: high 42, batch 7 used:8
> cpu 1 cold: high 14, batch 3 used:11
> DMA32 per-cpu: empty
> Normal per-cpu: empty
> HighMem per-cpu: empty
> Free pages:        6504kB (0kB HighMem)
> Active:7358 inactive:2693 dirty:34 writeback:0 unstable:0 free:1626 slab:2194 
> mapped:5098 pagetables:331
> DMA free:6504kB min:1492kB low:1864kB high:2236kB active:29432kB 
> inactive:10772kB present:139264kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB 
> pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB 
> pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB 
> present:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> DMA: 293*4kB 205*8kB 49*16kB 16*32kB 3*64kB 3*128kB 3*256kB 0*512kB 1*1024kB 
> 0*2048kB 0*4096kB = 6476kB
> DMA32: empty
> Normal: empty
> HighMem: empty
> Swap cache: add 0, delete 0, find 0/0, race 0+0
> Free swap  = 1052248kB
> Total swap = 1052248kB
> Free swap:       1052248kB
> 34816 pages of RAM
> 0 pages of HIGHMEM
> 17798 reserved pages
> 8132 pages shared
> 0 pages swap cached
> 34 pages dirty
> 0 pages writeback
> 5093 pages mapped
> 2195 pages slab
> 321 pages pagetables
> ------------[ cut here ]------------
> kernel BUG at drivers/xen/netback/netback.c:1073!
> invalid opcode: 0000 [#1]
> SMP
> Modules linked in: netbk ipv6 eeprom adm1026 hwmon_vid hwmon hidp l2cap 
> bluetooth dm_mirror dm_mod video button battery ac parport_pc lp parport 
> i2c_amd756 i2c_core sg hw_random tg3 ext3 jbd 3w_9xxx sd_mod scsi_mod
> CPU:    1
> EIP:    0061:[<c902c0b8>]    Not tainted VLI
> EFLAGS: 00010246   (2.6.17-1.2157_FC5xen #1)
> EIP is at netback_init+0xb8/0x16d [netbk]
> eax: 00000000   ebx: c658fed0   ecx: c0622b14   edx: ffffff29
> esi: c91f6000   edi: c5c7fff8   ebp: c5c7ffc0   esp: c658feb0
> ds: 007b   es: 007b   ss: 0069
> Process modprobe (pid: 1722, threadinfo=c658e000 task=c08130d0)
> Stack: <0>c066c3e0 c91f6000 c5c7fff8 c042b092 00000001 dead4ead ffffffff 
> ffffffff
>       00000001 dead4ead ffffffff ffffffff c5c7ffe0 c0438def 00000017 
> 00000398
>       00007354 00000ae0 c9203f80 00000000 00000000 00000000 00000000 
> 00000000
> Call Trace:
> <c042b092> blocking_notifier_call_chain+0x31/0x48  <c0438def> 
> sys_init_module+0x15df/0x178a
> <c05b115a> register_netdevice+0x0/0x31a  <c0404bff> syscall_call+0x7/0xb
> Code: 00 e8 61 b0 3f f7 c7 05 14 51 20 c9 00 00 00 00 c7 05 10 51 20 c9 b7 f3 
> 1f c9 68 00 01 00 00 e8 d9 dd 51 f7 83 c4 10 85 c0 75 08 <0f> 0b 31 04 28 13 
> 20 c9 89 c2 31 c9 2b 15 10 7a 74 c0 c1 fa 05
> EIP: [<c902c0b8>] netback_init+0xb8/0x16d [netbk] SS:ESP 0069:c658feb0
> Segmentation fault
> -bash-3.1#
>
> # /usr/sbin/xm info
> host                   : linux-test-108.phlinux.com
> release                : 2.6.17-1.2157_FC5xen
> version                : #1 SMP Tue Jul 11 23:55:13 EDT 2006
> machine                : i686
> nr_cpus                : 2
> nr_nodes               : 1
> sockets_per_node       : 2
> cores_per_socket       : 1
> threads_per_core       : 1
> cpu_mhz                : 2405
> hw_caps                : 
> 00000000:00000000:078bfbff:e1d3fbff:00000000:00000010
> total_memory           : 16255
> free_memory            : 16004
> xen_major              : 3
> xen_minor              : 0
> xen_extra              : -unstable
> xen_caps               : xen-3.0-x86_32p
> platform_params        : virt_start=0xf5800000
> xen_changeset          : unavailable
> cc_compiler            : gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)
> cc_compile_by          : brewbuilder
> cc_compile_domain      : build.redhat.com
> cc_compile_date        : Tue Jul 11 22:50:14 EDT 2006
>
> # /usr/sbin/xm dmesg
> __  __            _____  ___                     _        _     _
> \ \/ /___ _ __   |___ / / _ \    _   _ _ __  ___| |_ __ _| |__ | | ___
>  \  // _ \ '_ \    |_ \| | | |__| | | | '_ \/ __| __/ _` | '_ \| |/ _ \
>  /  \  __/ | | |  ___) | |_| |__| |_| | | | \__ \ || (_| | |_) | |  __/
> /_/\_\___|_| |_| |____(_)___/    \__,_|_| |_|___/\__\__,_|_.__/|_|\___|
>
> http://www.cl.cam.ac.uk/netos/xen
> University of Cambridge Computer Laboratory
>
> Xen version 3.0-unstable (brewbuilder at build.redhat.com) (gcc version 4.1.1 
> 20060525 (Red Hat 4.1.1-1)) Tue Jul 11 22:50:14 EDT 2006
> Latest ChangeSet: unavailable
>
> (XEN) Command line: /xen.gz-2.6.17-1.2157_FC5-PAE console=com2,vga nmi=dom0 
> dom0_mem=131072 com1=9600,8n1 com2=9600,8n1
> (XEN) Physical RAM map:
> (XEN)  0000000000000000 - 000000000009a800 (usable)
> (XEN)  000000000009a800 - 00000000000a0000 (reserved)
> (XEN)  00000000000ce000 - 0000000000100000 (reserved)
> (XEN)  0000000000100000 - 00000000f7f60000 (usable)
> (XEN)  00000000f7f60000 - 00000000f7f72000 (ACPI data)
> (XEN)  00000000f7f72000 - 00000000f7f80000 (ACPI NVS)
> (XEN)  00000000f7f80000 - 00000000f8000000 (reserved)
> (XEN)  00000000fec00000 - 00000000fec00400 (reserved)
> (XEN)  00000000fee00000 - 00000000fee01000 (reserved)
> (XEN)  00000000fff80000 - 0000000100000000 (reserved)
> (XEN)  0000000100000000 - 0000000400000000 (usable)
> (XEN) System RAM: 16254MB (16645096kB)
> (XEN) Xen heap: 9MB (9472kB)
> (XEN) Using scheduler: SMP Credit Scheduler (credit)
> (XEN) PAE enabled, limit: 16 GB
> (XEN) found SMP MP-table at 000f77f0
> (XEN) DMI present.
> (XEN) Using APIC driver default
> (XEN) ACPI: RSDP (v002 PTLTD                                 ) @ 0x000f7790
> (XEN) ACPI: XSDT (v001 PTLTD     XSDT   0x06040000  LTP 0x00000000) @ 
> 0xf7f6f1aa(XEN) ACPI: FADT (v003 AMD    HAMMER   0x06040000 PTEC 0x000f4240) 
> @ 0xf7f71b4a
> (XEN) ACPI: SSDT (v001 PTLTD  POWERNOW 0x06040000  LTP 0x00000001) @ 
> 0xf7f71c3e
> (XEN) ACPI: SRAT (v001 AMD    HAMMER   0x06040000 AMD  0x00000001) @ 
> 0xf7f71e4a
> (XEN) ACPI: MADT (v001 PTLTD     APIC   0x06040000  LTP 0x00000000) @ 
> 0xf7f71f3a(XEN) ACPI: SPCR (v001 PTLTD  $UCRTBL$ 0x06040000 PTL 0x00000001) @ 
> 0xf7f71fb0
> (XEN) ACPI: DSDT (v001 AMD-K8  AMDACPI 0x06040000 MSFT 0x0100000e) @ 
> 0x00000000
> (XEN) ACPI: Local APIC address 0xfee00000
> (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> (XEN) Processor #0 15:5 APIC version 16
> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
> (XEN) Processor #1 15:5 APIC version 16
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
> (XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
> (XEN) IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23
> (XEN) ACPI: IOAPIC (id[0x03] address[0xfb000000] gsi_base[24])
> (XEN) IOAPIC[1]: apic_id 3, version 17, address 0xfb000000, GSI 24-27
> (XEN) ACPI: IOAPIC (id[0x04] address[0xfb001000] gsi_base[28])
> (XEN) IOAPIC[2]: apic_id 4, version 17, address 0xfb001000, GSI 28-31
> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
> (XEN) ACPI: IRQ0 used by override.
> (XEN) ACPI: IRQ2 used by override.
> (XEN) Enabling APIC mode:  Flat.  Using 3 I/O APICs
> (XEN) Using ACPI (MADT) for SMP configuration information
> (XEN) Initializing CPU#0
> (XEN) Detected 2405.466 MHz processor.
> (XEN) CPU0: AMD Flush Filter disabled
> (XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> (XEN) CPU: L2 Cache: 1024K (64 bytes/line)
> (XEN) Intel machine check architecture supported.
> (XEN) Intel machine check reporting enabled on CPU#0.
> (XEN) CPU0: AMD Opteron(tm) Processor 250 stepping 0a
> (XEN) Booting processor 1/1 eip 90000
> (XEN) Initializing CPU#1
> (XEN) CPU1: AMD Flush Filter disabled
> (XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> (XEN) CPU: L2 Cache: 1024K (64 bytes/line)
> (XEN) AMD: Disabling C1 Clock Ramping Node #0
> (XEN) AMD: Disabling C1 Clock Ramping Node #1
> (XEN) Intel machine check architecture supported.
> (XEN) Intel machine check reporting enabled on CPU#1.
> (XEN) CPU1: AMD Opteron(tm) Processor 250 stepping 0a
> (XEN) Total of 2 processors activated.
> (XEN) ENABLING IO-APIC IRQs
> (XEN)  -> Using new ACK method
> (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=0 pin2=0
> (XEN) checking TSC synchronization across 2 CPUs: passed.
> (XEN) Platform timer is 1.193MHz PIT
> (XEN) Brought up 2 CPUs
> (XEN) Machine check exception polling timer started.
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) Domain 0 kernel supports features = { 0000001f }.
> (XEN) Domain 0 kernel requires features = { 00000000 }.
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN)  Dom0 alloc.:   000000000f000000->0000000010000000 (28672 pages to be 
> allocated)
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: c0400000->c076a9fc
> (XEN)  Init. ramdisk: c076b000->c0990e00
> (XEN)  Phys-Mach map: c0991000->c09b1000
> (XEN)  Start info:    c09b1000->c09b2000
> (XEN)  Page tables:   c09b2000->c09bd000
> (XEN)  Boot stack:    c09bd000->c09be000
> (XEN)  TOTAL:         c0000000->c0c00000
> (XEN)  ENTRY ADDRESS: c0400000
> (XEN) Dom0 has maximum 2 VCPUs
> (XEN) Initrd len 0x225e00, start at 0xc076b000
> (XEN) Scrubbing Free RAM: 
> ....................................................................................................................................................................done.
> (XEN) Xen trace buffers: disabled
> (XEN) Xen is relinquishing VGA console.
> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
> Xen).
> (XEN) (file=io_apic.c, line=2061)
> (XEN) ioapic_guest_write: apic=0, pin=4, old_irq=4, new_irq=4
> (XEN) ioapic_guest_write: old_entry=000009f1, new_entry=000109f1
> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
> (XEN) (file=io_apic.c, line=2061)
> (XEN) ioapic_guest_write: apic=0, pin=3, old_irq=3, new_irq=3
> (XEN) ioapic_guest_write: old_entry=000009f2, new_entry=000109f2
> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
> (XEN) (file=dom0_ops.c, line=396) Domain 0 says that IO-APIC REGSEL is good
>
>
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