On 2015-05-02 00:16:43, Christian Schulte <c...@schulte.it> wrote:
> >Synopsis: After some time (minutes or seconds) the em0 interface stops
> >working
> >Category: system
> >Environment:
> System : OpenBSD 5.7
> Details : OpenBSD 5.7-stable (GENERIC.MP) #0: Fri May 1 23:59:46
> CEST 2015
>
> r...@t60.schulte.it:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> Architecture: OpenBSD.amd64
> Machine : amd64
> >Description:
> Following is the contents of the /etc/hostname.em0 file:
>
> inet 192.168.10.50 255.255.255.0 192.168.10.255
>
> The em0 interface works as expected. After some time it stops
> working. Processes currently transmitting data will show a
> (Broken pipe) error. Doing ifconfig em0 down && sh /etc/netstart
> the interface starts working again for some time and than hangs
> again.
>
> >How-To-Repeat:
> The issue is reproducible by simply using the em0 interface.
> >Fix:
> ifconfig em0 down && sh /etc/netstart
>
> [...]
>
I wonder if this is the same thing that I mentioned here:
http://marc.info/?l=openbsd-misc&m=141007061612003&w=2
Though I don't get a "(Broken pipe)" error, em0 just hangs and won't transmit
packets.
In a nutshell, CPU activity causes em0 to hang on both my T60 and X61t laptops.
Provided I don't do CPU intensive activities, it can run fine for days,
or potentially weeks at a time. However, running bogofilter (which I've stopped
using since it wedged the network reliably every time I'd fetch my email),
compiling a large port (smaller ones don't tend to wedge it, only larger ones
that take at least several minutes to compile seem to) or just trying to do
something like fetch and upgrade packages, or just going to a CPU intensive
webpage like google maps will invariably cause the network to wedge.
Neither machine will send or receive packets, including responding to ping
requests when this happens.
If I need to update packages or compile something, I'll usually just run a
script like the following so I don't need to babysit the computer:
while true; do sleep 25 && ifconfig em0 down up && sleep 1 && ifconfig
em0 down up && echo ping; done
I was contacted privately by a developer and sent a few patches to the UVM and
softraid systems which caused them to KERNEL_LOCK() and KERNEL_UNLOCK() in a
few key places which has helped a lot, but the network will still lock up
reliably with heavy CPU activity.
All I can say is that I first noticed this when I upgraded from a mid-July 2014
snap to an early-September 2014 snap, which I know is a very large window.
I've
unfortunately been too busy to try to go back and figure out what change caused
this, and have been getting by with the above script when necessary.
I've seen a lot of work done on the networking code and in UVM over the last
year or so, so I've been upgrading to newer snaps as they've been released
hoping that they'd fix it, but it seems like the problem may lie somewhere
else or be obscure or specific to my setup.
I've just assumed that since no one else has reported this problem, that there
was something unique about my system or setup that was causing this, which
would tend to lower the severity of this bug since as far as I knew up until
now, I was the only one affected by it.
I realize this is a rather poor bug report, but hopefully by at least
mentioning
the fact that a few key KERNEL_LOCK()/KERNEL_UNLOCK() calls sprinkled around
some UVM and softraid code reduce the occurance of this bug, it at least gives
someone a somewhat smaller target to look at.
I can provide more information if necessary. A dmesg from the T60 (with the
above mentioned patches applied) follows:
--
Bryan
OpenBSD 5.7-current (GENERIC.MP) #14: Sat Apr 11 00:04:25 PDT 2015
r...@shoshoni-m.shoshoni.info:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz ("GenuineIntel" 686-class) 2 GHz
cpu0:
FPU,V86,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,NXE,LONG,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,LAHF,PERF
real mem = 2682601472 (2558MB)
avail mem = 2626478080 (2504MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: date 04/01/10, BIOS32 rev. 0 @ 0xfd6b0, SMBIOS rev. 2.4 @
0xe0010 (68 entries)
bios0: vendor LENOVO version "79ETE6WW (2.26 )" date 04/01/2010
bios0: LENOVO 2623D9U
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SSDT ECDT TCPA APIC MCFG HPET BOOT SSDT SSDT SSDT SSDT
acpi0: wakeup devices LID_(S3) SLPB(S3) LURT(S3) DURT(S3) EXP0(S4) EXP1(S4)
EXP2(S4) EXP3(S4) PCI1(S4) USB0(S3) USB1(S3) USB2(S3) USB7(S3) HDEF(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpiec0 at acpi0
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 166MHz
cpu0: mwait min=64, max=64, C-substates=0.2.2.2.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz ("GenuineIntel" 686-class) 2 GHz
cpu1:
FPU,V86,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,NXE,LONG,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,LAHF,PERF
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 2, remapped to apid 1
acpimcfg0 at acpi0 addr 0xf0000000, bus 0-63
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (AGP_)
acpiprt2 at acpi0: bus 2 (EXP0)
acpiprt3 at acpi0: bus 3 (EXP1)
acpiprt4 at acpi0: bus 4 (EXP2)
acpiprt5 at acpi0: bus 12 (EXP3)
acpiprt6 at acpi0: bus 21 (PCI1)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpipwrres0 at acpi0: PUBS, resource for USB0, USB2, USB7
acpitz0 at acpi0: critical temperature is 127 degC
acpitz1 at acpi0: critical temperature is 99 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model "92P1139" serial 659 type LION oem "Panasonic"
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0
acpidock0 at acpi0: GDCK docked (15)
bios0: ROM list: 0xc0000/0xfe00 0xd0000/0x1000 0xd1000/0x1000 0xdc000/0x4000!
0xe0000/0x10000!
cpu0: Enhanced SpeedStep 1995 MHz: speeds: 2000, 1667, 1333, 1000 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82945GM Host" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82945GM PCIE" rev 0x03: apic 1 int 16
pci1 at ppb0 bus 1
radeondrm0 at pci1 dev 0 function 0 "ATI Radeon Mobility X1300 M52-64" rev 0x00
drm0 at radeondrm0
radeondrm0: apic 1 int 16
azalia0 at pci0 dev 27 function 0 "Intel 82801GB HD Audio" rev 0x02: msi
azalia0: codecs: Analog Devices AD1981HD, Conexant/0x2bfa, using Analog Devices
AD1981HD
audio0 at azalia0
ppb1 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x02: apic 1 int 20
pci2 at ppb1 bus 2
em0 at pci2 dev 0 function 0 "Intel 82573L" rev 0x00: msi, address
00:16:41:52:7e:81
ppb2 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x02: apic 1 int 21
pci3 at ppb2 bus 3
wpi0 at pci3 dev 0 function 0 "Intel PRO/Wireless 3945ABG" rev 0x02: msi, MoW1,
address 00:13:02:20:41:18
ppb3 at pci0 dev 28 function 2 "Intel 82801GB PCIE" rev 0x02: apic 1 int 22
pci4 at ppb3 bus 4
xhci0 at pci4 dev 0 function 0 "Renesas uPD720202 xHCI" rev 0x02: msi
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 "Renesas xHCI root hub" rev 3.00/1.00 addr 1
ppb4 at pci0 dev 28 function 3 "Intel 82801GB PCIE" rev 0x02: apic 1 int 23
pci5 at ppb4 bus 12
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x02: apic 1 int 16
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x02: apic 1 int 17
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x02: apic 1 int 18
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x02: apic 1 int 19
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x02: apic 1 int 19
usb1 at ehci0: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb5 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xe2
pci6 at ppb5 bus 21
cbb0 at pci6 dev 0 function 0 "TI PCI1510 CardBus" rev 0x00: apic 1 int 16
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 22 device 0 cacheline 0x8, lattimer 0xb0
pcmcia0 at cardslot0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801GBM LPC" rev 0x02: PM disabled
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <HL-DT-ST, DVDRAM GSA-U10N, 1.05> ATAPI 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 ignored (disabled)
ahci0 at pci0 dev 31 function 2 "Intel 82801GBM AHCI" rev 0x02: msi, AHCI 1.1
ahci0: port 0: 1.5Gb/s
scsibus2 at ahci0: 32 targets
sd0 at scsibus2 targ 0 lun 0: <ATA, INTEL SSDSC2CW24, 400i> SCSI3 0/direct
fixed naa.5001517bb2a98d08
sd0: 228936MB, 512 bytes/sector, 468862128 sectors, thin
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x02: apic 1 int 23
iic0 at ichiic0
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci2: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb5 at uhci3: USB revision 1.0
uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
com4 at pcmcia0 function 0 "U.S. Robotics, XJ/CC1560, Megahertz 56kbps Modem"
port 0xa3f8/8: ns16550a, 16 byte fifo
com4: probed fifo depth: 0 bytes
uhub6 at uhub1 port 6 "IBM product 0x4485" rev 2.00/0.01 addr 2
uhidev0 at uhub6 port 2 configuration 1 interface 0 "Logitech USB-PS/2 Optical
Mouse" rev 2.00/20.00 addr 3
uhidev0: iclass 3/1
ums0 at uhidev0: 3 buttons, Z dir
wsmouse1 at ums0 mux 0
uhidev1 at uhub6 port 3 configuration 1 interface 0 "Gravis GamePad Pro USB"
rev 1.00/2.00 addr 4
uhidev1: iclass 3/0
uhid0 at uhidev1: input=4, output=0, feature=0
ugen0 at uhub5 port 2 "STMicroelectronics Biometric Coprocessor" rev 1.00/0.01
addr 2
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
sd1 at scsibus4 targ 1 lun 0: <OPENBSD, SR CRYPTO, 005> SCSI2 0/direct fixed
sd1: 200595MB, 512 bytes/sector, 410819160 sectors
softraid0: volume sd1 is roaming, it used to be sd2, updating metadata
root on sd1a (bfe3b486511fab55.a) swap on sd1b dump on sd1b
radeondrm0: 1600x1200
wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
wpi0: radio is disabled by hardware switch
wpi0: could not initialize hardware
