Hi misc@,

I have a Dell PowerEdge M600 machine running OpenBSD 5.3 which causes
frequent problems - once about every few days vlan interfaces stop
working.

Ifconfig reports them being up the whole time, but when trying to ping
anything in the given vlan, the ping fails (this also applies to the
loopback address on the interface - it doesn't reply as well), as if no
packets were transmitted on it. This applies to all packets on the
interface, not just ICMP ones.

This doesn't seem to be a PF issue, since disabling it doesn't help, and
non-vlan interfaces (like trunk0 with trunkproto failover) continue to
work.

Putting the interface down and up, destroying and creating it or running
/etc/netstart doesn't help - a reboot is required, after which the
machine works correctly again for some time.

I checked the logs and dmesg and found there nothing of any value - no
new messages around the time of the crash.

As this is a blade machine, most hardware issues (like memory problems)
would be reported by the chassis, and it reports none.

I have a couple other M600 machines running OpenBSD, with the same
network cards, and only once this problem did occur on another machine -
a slave for the problematic one, running pfsync, sasync and acting as a
carp backup.

Could anyone provide me with some tips on how to debug the problem
further? Turn on some kernel debug mode, make use of the kernel
debugger? I'm at my wits end here.

If there is any information that I could provide to help solve the
problem, please don't hesitate to ask.

The dmesg is attached below:

OpenBSD 5.3 (GENERIC.MP) #62: Tue Mar 12 18:21:20 MDT 2013
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 4292550656 (4093MB)
avail mem = 4155789312 (3963MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.5 @ 0xbff9c000 (50 entries)
bios0: vendor Dell Inc. version "2.4.0" date 10/29/2010
bios0: Dell Inc. PowerEdge M600
acpi0 at bios0: rev 2
acpi0: sleep states S0 S4 S5
acpi0: tables DSDT FACP APIC SPCR HPET MCFG WD__ SLIC ERST HEST BERT
EINJ SSDT SSDT SSDT SSDT SSDT
acpi0: wakeup devices PCI0(S5)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 2494.11 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE,NXE,LONG,LAHF,PERF
cpu0: 6MB 64b/line 16-way L2 cache
cpu0: apic clock running at 332MHz
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 2493.75 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE,NXE,LONG,LAHF,PERF
cpu1: 6MB 64b/line 16-way L2 cache
cpu2 at mainbus0: apid 1 (application processor)
cpu2: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 2493.75 MHz
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE,NXE,LONG,LAHF,PERF
cpu2: 6MB 64b/line 16-way L2 cache
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 2493.75 MHz
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE,NXE,LONG,LAHF,PERF
cpu3: 6MB 64b/line 16-way L2 cache
ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 4
acpihpet0 at acpi0: 14318179 Hz
acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (PEX2)
acpiprt2 at acpi0: bus 2 (UPST)
acpiprt3 at acpi0: bus 3 (DWN1)
acpiprt4 at acpi0: bus 5 (DWN2)
acpiprt5 at acpi0: bus 8 (PEX3)
acpiprt6 at acpi0: bus 9 (PEX4)
acpiprt7 at acpi0: bus 11 (PEX5)
acpiprt8 at acpi0: bus 13 (PEX6)
acpiprt9 at acpi0: bus 14 (PEX7)
acpiprt10 at acpi0: bus 15 (COMP)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpicpu2 at acpi0: C3, C2, C1, PSS
acpicpu3 at acpi0: C3, C2, C1, PSS
ipmi at mainbus0 not configured
cpu0: Enhanced SpeedStep 2494 MHz: speeds: 2500, 2000 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 5000P Host" rev 0x92
ppb0 at pci0 dev 2 function 0 "Intel 5000 PCIE" rev 0x92
pci1 at ppb0 bus 1
ppb1 at pci1 dev 0 function 0 "Intel 6321ESB PCIE" rev 0x01
pci2 at ppb1 bus 2
ppb2 at pci2 dev 0 function 0 "Intel 6321ESB PCIE" rev 0x01
pci3 at ppb2 bus 3
ppb3 at pci3 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci4 at ppb3 bus 4
bnx0 at pci4 dev 0 function 0 "Broadcom BCM5708S" rev 0x12: apic 4
int 17
ppb4 at pci2 dev 1 function 0 "Intel 6321ESB PCIE" rev 0x01
pci5 at ppb4 bus 5
ppb5 at pci5 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci6 at ppb5 bus 6
bnx1 at pci6 dev 0 function 0 "Broadcom BCM5708S" rev 0x12: apic 4
int 18
ppb6 at pci1 dev 0 function 3 "Intel 6321ESB PCIE-PCIX" rev 0x01
pci7 at ppb6 bus 7
ppb7 at pci0 dev 3 function 0 "Intel 5000 PCIE" rev 0x92
pci8 at ppb7 bus 8
ppb8 at pci0 dev 4 function 0 "Intel 5000 PCIE" rev 0x92: msi
pci9 at ppb8 bus 9
ppb9 at pci9 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci10 at ppb9 bus 10
bnx2 at pci10 dev 0 function 0 "Broadcom BCM5708S" rev 0x12: apic 4
int 18
ppb10 at pci0 dev 5 function 0 "Intel 5000 PCIE" rev 0x92: msi
pci11 at ppb10 bus 11
ppb11 at pci11 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci12 at ppb11 bus 12
bnx3 at pci12 dev 0 function 0 "Broadcom BCM5708S" rev 0x12: apic 4 int 19
ppb12 at pci0 dev 6 function 0 "Intel 5000 PCIE x8" rev 0x92: msi
pci13 at ppb12 bus 13
ppb13 at pci0 dev 7 function 0 "Intel 5000 PCIE" rev 0x92: msi
pci14 at ppb13 bus 14
pchb1 at pci0 dev 16 function 0 "Intel 5000 Error Reporting" rev 0x92
pchb2 at pci0 dev 16 function 1 "Intel 5000 Error Reporting" rev 0x92
pchb3 at pci0 dev 16 function 2 "Intel 5000 Error Reporting" rev 0x92
pchb4 at pci0 dev 17 function 0 "Intel 5000 Reserved" rev 0x92
pchb5 at pci0 dev 19 function 0 "Intel 5000 Reserved" rev 0x92
pchb6 at pci0 dev 21 function 0 "Intel 5000 FBD" rev 0x92
pchb7 at pci0 dev 22 function 0 "Intel 5000 FBD" rev 0x92
uhci0 at pci0 dev 29 function 0 "Intel 6321ESB USB" rev 0x09: apic 4 int 21
uhci1 at pci0 dev 29 function 1 "Intel 6321ESB USB" rev 0x09: apic 4 int 20
uhci2 at pci0 dev 29 function 2 "Intel 6321ESB USB" rev 0x09: apic 4 int 21
ehci0 at pci0 dev 29 function 7 "Intel 6321ESB USB" rev 0x09: apic 4
int 21
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb14 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xd9
pci15 at ppb14 bus 15
vga1 at pci15 dev 4 function 0 "ATI ES1000" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: apic 4 int 19
drm0 at radeondrm0
pcib0 at pci0 dev 31 function 0 "Intel 6321ESB LPC" rev 0x09
pciide0 at pci0 dev 31 function 2 "Intel 6321ESB SATA" rev 0x09:
DMA, channel 0 configured to native-PCI, channel 1 configured to
native-PCI
pciide0: using apic 4 int 23 for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <FUJITSU MHZ2160BK G2>
wd0: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
mtrr: Pentium Pro MTRR support
umass0 at uhub0 port 2 configuration 1 interface 0 "American Megatrends Inc. 
Virtual Composite Storage Device" rev 2.00/1.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, initiator 0
cd0 at scsibus0 targ 1 lun 0: <, Virtual CDROM, 1.00> SCSI0 5/cdrom removable
umass1 at uhub0 port 2 configuration 1 interface 1 "American Megatrends Inc. 
Virtual Composite Storage Device" rev 2.00/1.00 addr 2
umass1: using SCSI over Bulk-Only
scsibus1 at umass1: 2 targets, initiator 0
sd0 at scsibus1 targ 1 lun 0: <, Virtual Floppy, 1.00> SCSI0 0/direct removable
uhidev0 at uhub2 port 1 configuration 1 interface 0 "American
Megatrends Inc. Virtual Keyboard and Mouse" rev 1.10/1.00 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub2 port 1 configuration 1 interface 1 "American
Megatrends Inc. Virtual Keyboard and Mouse" rev 1.10/1.00 addr 2
uhidev1: iclass 3/1
ums0 at uhidev1: 3 buttons, Z dir
wsmouse0 at ums0 mux 0
uhidev2 at uhub2 port 2 configuration 1 interface 0 "Avocent Avocent
KVM" rev 1.10/1.00 addr 3
uhidev2: iclass 3/1
ukbd1 at uhidev2: 8 variable keys, 6 key codes
wskbd2 at ukbd1 mux 1
wskbd2: connecting to wsdisplay0
uhidev3 at uhub2 port 2 configuration 1 interface 1 "Avocent Avocent
KVM" rev 1.10/1.00 addr 3
uhidev3: iclass 3/1, 3 report ids
ums1 at uhidev3 reportid 1: 5 buttons, Z dir
wsmouse1 at ums1 mux 0
uhid0 at uhidev3 reportid 2: input=2, output=0, feature=0
uhid1 at uhidev3 reportid 3: input=1, output=0, feature=0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (c12abee9ad63bcb9.a) swap on wd0b dump on wd0b
bnx0: address 00:22:19:87:00:31
brgphy0 at bnx0 phy 2: BCM5708S 1000/2500baseSX PHY, rev. 1
bnx1: address 00:22:19:87:00:33
brgphy1 at bnx1 phy 2: BCM5708S 1000/2500baseSX PHY, rev. 1
bnx2: address 00:1d:09:74:30:50
brgphy2 at bnx2 phy 2: BCM5708S 1000/2500baseSX PHY, rev. 1
bnx3: address 00:1d:09:74:30:52
brgphy3 at bnx3 phy 2: BCM5708S 1000/2500baseSX PHY, rev. 1

-- 
regards, 

Wiesław Kielas

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