Login failure on ttyu0

[behemoth]

Hi, I have just installed FreeBSD 10.0 on PPC (Apple iBook 800 MHz dual USB).

At first boot I have on my terminal these messages (one every 2/3 minutes):

Jun 19 08:16:41 plutone login: 1 LOGIN FAILURE ON ttyu0
Jun 19 08:17:39 plutone login: 1 LOGIN FAILURE ON ttyu0
Jun 19 08:19:28 plutone login: 1 LOGIN FAILURE ON ttyu0
etc..

At the same time the system is very slow, I have executed 'top' program and all parameters are OK but interrupt value is 98% for 2/3 minutes.

I don't understand why and what can I do.

many thanks.

 

[SirDice]

I'm not sure if it's caused by it but is this machine directly connected to the internet? You're not behind a router? If so you may be seeing the result of brute-force attacks.

 

[behemoth]

I'm not sure if it's caused by it but is this machine directly connected to the internet? You're not behind a router? If so you may be seeing the result of brute-force attacks.

I'm behind router.

I'm going crazy, I have reinstalled the system twice and the same thing happened.

 

[SirDice]

The ttyu0 refers to the first serial dial-in line but that's disabled by default. So I'm wondering why you're seeing login failures on it. Did you perhaps modify /etc/ttys?

 

[behemoth]

The ttyu0 refers to the first serial dial-in line but that's disabled by default. So I'm wondering why you're seeing login failures on it. Did you perhaps modify /etc/ttys?

Absolutely not, it is default system after installation, it is my first login.

 

[junovitch@]

At the same time the system is very slow, I have executed 'top' program and all parameters are OK but interrupt value is 98% for 2/3 minutes.

This is not right. What is using up so much interrupts? Run top -HSa to see all threads of system processes by their full name. What is using up so much CPU? I've been able to skyrocket interrupts by running multiple iperf benchmarks across multiple NICs but the system was still perfectly usable as a router while doing so.

 

[behemoth]

This is not right. What is using up so much interrupts? Run top -HSa to see all threads of system processes by their full name. What is using up so much CPU? I've been able to skyrocket interrupts by running multiple iperf benchmarks across multiple NICs but the system was still perfectly usable as a router while doing so.

I have executed top -HSa

last pid:  1010;  load averages:  6.07,  4.00,  2.09  up 0+00:45:51    17:25:15
72 processes:  3 running, 51 sleeping, 1 stopped, 17 waiting

Mem: 16M Active, 12M Inact, 18M Wired, 14M Buf, 185M Free
Swap: 640M Total, 640M Free

  PID USERNAME   PRI NICE   SIZE    RES STATE    TIME    WCPU COMMAND
   12 root       -76    -     0K   272K WAIT     3:15 100.00% [intr{swi0: uart uart}]
   14 root       -16    -     0K    16K -        5:17   2.98% [rand_harvestq]
 1009 behemoth    27    0 11672K  2476K RUN      0:01   0.49% top -HSa
   16 root        20    -     0K    16K sdflus   0:01   0.20% [softdepflush]
   11 root       155 ki31     0K    16K RUN     34:12   0.00% [idle]
[...]

My laptop is totally unusable.

 

[behemoth]

Can I do something to fix my problem?

 

[ondra_knezour]

Do you have any serial or USB device attached to the computer? Show us also boot messages (should be living in /var/run/dmesg.boot).

 

[ondra_knezour]

And you can also try to find which interrupt is storming with vmstat -i, and try to find offending process with ps -auxw. Add -t ttyu0 to filter list for processes attached to given terminal.

 

[behemoth]

Do you have any serial or USB device attached to the computer? Show us also boot messages (should be living in /var/run/dmesg.boot).

There is only mouse on USB port, it is default installation on PPC (ibook).

$ cat /var/run/dmesg.boot

Copyright (c) 1992-2014 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 10.0-RELEASE #0 r260789: Fri Jan 17 11:56:31 UTC 2014
    root@snap.freebsd.org:/usr/obj/powerpc.powerpc/usr/src/sys/GENERIC powerpc
gcc version 4.2.1 20070831 patched [FreeBSD]
cpu0: IBM PowerPC 750FX revision 2.2, 800.43 MHz
cpu0: Features 8c000000<PPC32,FPU,MMU>
cpu0: HID0 8090c0a4<EMCP,DOZE,DPM,ICE,DCE,SGE,BTIC,BHT>
real memory  = 252268544 (240 MB)
avail memory = 240046080 (228 MB)
random: <Software, Yarrow> initialized
kbd0 at kbdmux0
nexus0: <Open Firmware Nexus device>
cpulist0: <Open Firmware CPU Group> on nexus0
cpu0: <Open Firmware CPU> on cpulist0
powermac_nvram0: <Apple NVRAM> on nexus0
powermac_nvram0: bank0 generation 738, bank1 generation 739
unin0: <Apple UniNorth System Controller> on nexus0
unin0: Version 192
iichb0: <Keywest I2C controller> mem 0xf8001000-0xf8001fff irq 42 on unin0
iicbus0: <OFW I2C bus> on iichb0
iicbus0: <unknown card> at addr 0x158
iicbus0: <unknown card> at addr 0x1c0
pcib0: <Apple UniNorth Host-PCI bridge> on nexus0
pci0: <OFW PCI bus> on pcib0
agp0: <Apple UniNorth AGP Bridge> on hostb0
vgapci0: <VGA-compatible display> port 0x400-0x4ff mem 0x98000000-0x9fffffff,0x90000000-0x9000ffff irq 48 at device 16.0 on pci0
backlight0: <PowerBook backlight for ATI graphics> on vgapci0
vgapci0: Boot video device
pcib1: <Apple UniNorth Host-PCI bridge> on nexus0
pci1: <OFW PCI bus> on pcib1
macio0: <Pangea I/O Controller> mem 0x80000000-0x8007ffff at device 23.0 on pci1
openpic0: <OpenPIC Interrupt Controller> mem 0x40000-0x7ffff on macio0
macgpio0: <MacIO GPIO Controller> mem 0x50-0x7f on macio0
pmuextint0: <Apple PMU99 External Interrupt> extint-gpio 1 irq 47 on macgpio0
vcoregpio0: <CPU Core Voltage Control> gpio 1 on macgpio0
scc0: <Zilog Z8530 dual channel SCC> mem 0x13000-0x13fff,0x8400-0x84ff,0x8500-0x85ff,0x8600-0x86ff,0x8700-0x87ff irq 22,5,6,23,7,8 on macio0
uart0: <z8530, channel A> on scc0
uart1: <z8530, channel B> on scc0
pcm0: <Apple I2S Audio Controller> mem 0x10000-0x10fff,0x8000-0x80ff,0x8100-0x81ff irq 30,1,2 on macio0
pmu0: <Apple PMU99 Controller> mem 0x16000-0x17fff irq 25 on macio0
adb0: <Apple Desktop Bus> on pmu0
iichb1: <Keywest I2C controller> mem 0x18000-0x18fff irq 26 on macio0
iicbus1: <OFW I2C bus> on iichb1
iicbus1: <unknown card> at addr 0x1c0
snapper0: <Texas Instruments TAS3004 Audio Codec> at addr 0x6a on iicbus1
ata0: <Apple MacIO Ultra ATA Controller> mem 0x1f000-0x1ffff,0x8a00-0x8aff irq 19,11 on macio0
ohci0: <OHCI (generic) USB controller> mem 0x80081000-0x80081fff irq 27 at device 24.0 on pci1
usbus0 on ohci0
ohci1: <OHCI (generic) USB controller> mem 0x80080000-0x80080fff irq 28 at device 25.0 on pci1
usbus1 on ohci1
pcib2: <Apple UniNorth Host-PCI bridge> on nexus0
pci2: <OFW PCI bus> on pcib2
pci2: <serial bus, FireWire> at device 14.0 (no driver attached)
gem0: <Apple Pangea GMAC Ethernet> mem 0xf5200000-0xf53fffff irq 41 at device 15.0 on pci2
miibus0: <MII bus> on gem0
bmtphy0: <BCM5221 10/100 media interface> PHY 0 on miibus0
bmtphy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto, auto-flow
gem0: 10kB RX FIFO, 4kB TX FIFO
gem0: Ethernet address: 00:03:93:cb:52:e2
sc0: <System console> on nexus0
sc0: Unknown <16 virtual consoles, flags=0x300>
Timecounter "timebase" frequency 24835245 Hz quality 0
Event timer "decrementer" frequency 24835245 Hz quality 1000
Timecounters tick every 1.000 msec
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
ugen0.1: <Apple> at usbus0
uhub0: <Apple OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <Apple> at usbus1
uhub1: <Apple OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ada0 at ata0 bus 0 scbus0 target 0 lun 0
ada0: <IBM-IC25N030ATCS04-0 CA3AA71A> ATA-5 device
ada0: Serial Number CSH307DAHR2RTB
ada0: 66.700MB/s transfers (UDMA4, PIO 8192bytes)
ada0: 28615MB (58605120 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad0
cd0 at ata0 bus 0 scbus0 target 1 lun 0
cd0: <LG CD-ROM CRN-8245B AHTA> Removable CD-ROM SCSI-0 device 
cd0: 33.300MB/s transfers (UDMA2, ATAPI 12bytes, PIO 65534bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
akbd0: <iBook Keyboard> at device 2 on adb0
kbd1 at akbd0
ams0: <ADB Mouse> at device 3 on adb0
random: unblocking device.
ams0: ADB Mouse = 0xd (Extended Mode)
ams0: 2-button 400-dpi Touchpad
abtn0: <ADB Brightness/Volume/Eject Buttons> at device 7 on adb0
Root mount waiting for: usbus1
ugen1.2: <Logitech> at usbus1
ums0: <Logitech Optical USB Mouse, class 0/0, rev 2.00/3.40, addr 2> on usbus1
ums0: 3 buttons and [XYZ] coordinates ID=0
Trying to mount root from ufs:/dev/ada0s3 [rw]...
ugen0.2: <Generic> at usbus0
umass0: <Generic Mass Storage, class 0/0, rev 2.00/1.03, addr 2> on usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x4101
umass0:1:0:-1: Attached to scbus1
da0 at umass-sim0 bus 0 scbus1 target 0 lun 0
da0: <Generic Flash Disk 8.07> Removable Direct Access SCSI-2 device 
da0: Serial Number 1995BE2D
da0: 1.000MB/s transfers
da0: 3850MB (7884800 512 byte sectors: 255H 63S/T 490C)
da0: quirks=0x2<NO_6_BYTE>

 

[behemoth]

And you can also try to find which interrupt is storming with vmstat -i, and try to find offending process with ps -auxw. Add -t ttyu0 to filter list for processes attached to given terminal.

I have executed top -HSa to see all threads of system processes:

  PID USERNAME   PRI NICE   SIZE    RES STATE    TIME    WCPU COMMAND
   12 root       -76    -     0K   272K WAIT     3:15 100.00% [intr{swi0: uart uart}]
[...]

 

[ondra_knezour]

I don't see anything weird there and I am afraid that my knowledge about the PPC platform ends here. You may try to disable entropy harwesting from software interrupts via the kern.random.sys.harvest.swi sysctl, but I thing it is disabled by default.

 

[behemoth]

I have the system very slow and many login failure on my terminal, probably both depend on the same problem.

This is what I see every 1/2 minutes on my terminal (from auth log)

[...]
Jun 22 10:13:25 plutone login: 1 LOGIN FAILURE ON ttyu0
Jun 22 10:13:25 plutone login: 1 LOGIN FAILURE ON ttyu0, FreeBSD/powerpc (plutone) (ttyu0
Jun 22 10:14:10 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:14:10 plutone login: 2 LOGIN FAILURES ON ttyu0, ^G
Jun 22 10:14:21 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:14:21 plutone login: 2 LOGIN FAILURES ON ttyu0, login: login: :
Jun 22 10:14:47 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:14:47 plutone login: 2 LOGIN FAILURES ON ttyu0, s^G
Jun 22 10:16:06 plutone login: 4 LOGIN FAILURES ON ttyu0
Jun 22 10:16:06 plutone login: 4 LOGIN FAILURES ON ttyu0, d:Login incorrect
Jun 22 10:17:55 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:17:55 plutone login: 2 LOGIN FAILURES ON ttyu0, ^G
Jun 22 10:18:06 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:18:06 plutone login: 2 LOGIN FAILURES ON ttyu0, login: login: :
Jun 22 10:18:34 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:18:34 plutone login: 2 LOGIN FAILURES ON ttyu0, rd:
Jun 22 10:19:23 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:19:23 plutone login: 2 LOGIN FAILURES ON ttyu0, d:Login incorrect
Jun 22 10:19:55 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:19:55 plutone login: 2 LOGIN FAILURES ON ttyu0, d:Login incorrect
Jun 22 10:25:06 plutone login: 1 LOGIN FAILURE ON ttyu0
Jun 22 10:25:06 plutone login: 1 LOGIN FAILURE ON ttyu0, login: FPassword:r
Jun 22 10:28:57 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:30:41 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:30:42 plutone login: 2 LOGIN FAILURES ON ttyu0, rd:
Jun 22 10:30:49 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:30:49 plutone login: 2 LOGIN FAILURES ON ttyu0, FreeBSD/powerpc (plutone) (Passw
Jun 22 10:31:00 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:31:00 plutone login: 2 LOGIN FAILURES ON ttyu0, login: login: ^G
Jun 22 10:31:28 plutone login: 2 LOGIN FAILURES ON ttyu0
Jun 22 10:31:28 plutone login: 2 LOGIN FAILURES ON ttyu0,  ^G

 

[behemoth]

I don't see anything weird there and I am afraid that my knowledge about the PPC platform ends here. You may try to disable entropy harwesting from software interrupts via the kern.random.sys.harvest.swi sysctl, but I thing it is disabled by default.

I'm frustrated! I want to do all the things possible.

My kern.random.sys.harvest.swi is set to 1.

 

[ondra_knezour]

Try sysctl kern.random.sys.harvest.swi=0, but it is really just blind shot.

 

[behemoth]

Try sysctl kern.random.sys.harvest.swi=0, but it is really just blind shot.

Done, rebooted and logged.

[intr{swi0: uart uart}] is 100%.

I don't know, probably PPC arch is not good for my PPC.

 

[ondra_knezour]

You can try to send message to the freebsd-ppc@ list, where may be more people using the PowerPC platform and with some knowledge how to debug such problems.

 

[behemoth]

You can try to send message to the freebsd-ppc@ list, where may be more people using the PowerPC platform and with some knowledge how to debug such problems.

Ok, thanks.

 

[SirDice]

Yes, that might be the only option as it may be a specific FreeBSD-PPC issue. The PPC architecture is a Tier 2 platform, so it doesn't get as much attention as the Tier 1 platforms (AMD64/i386).

http://www.freebsd.org/doc/en_US.ISO885 ... archs.html

 

[junovitch@]

As a proof of concept to see if the uart interrupts can be quelled, if you aren't using the serial port is there a option on that platform to disable the serial port in whatever it calls the BIOS? May be worth a look.