Nanostation loco M5 difettosa

Alcuni semplici appunti.

IMG_20140211_233549Arduino simple serial connection: TX e RX e GRND ad arduino e alimentato la LOCO con il POE. Con cutecom ho settato la velocità a 115200 8 1.

IMG_20140211_233736

Immagino che la ram sia difettosa.
Eseguendo il memory test da U-Boot (mtest) si blocca tutto durante l’esecuzione del primo pattern.

La metto da parte in attesa di un re-work con un modulo RAM riciclabile.
Eventuali commenti/suggerimenti torneranno utili.

\0x00

U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.0 e8a5)
 DRAM: 32 MB
 Flash: 8 MB
 Net: eth0, eth1
 Hit any key to stop autoboot: 1 \0x08\0x08\0x08 0
 ## Booting image at 9f050000 ...
 Image Name: MIPS Ubiquiti Linux-2.6.32.54
 Created: 2014-02-05 16:25:36 UTC
 Image Type: MIPS Linux Kernel Image (lzma compressed)
 Data Size: 1047649 Bytes = 1023.1 kB
 Load Address: 80002000
 Entry Point: 80002000
 Verifying Checksum ... OK
 Uncompressing Kernel Image ... OK

Starting kernel ...

Booting...
 \0x00
 [ 0.000000] Linux version 2.6.32.54 (buildd@builder) (gcc version 4.1.2) #1 Wed Feb 5 18:25:32 EET 2014
 [ 0.000000] flash_size passed from bootloader = 0
 [ 0.000000] CPU revision is: 00019374 (MIPS 24Kc)
 [ 0.000000] Determined physical RAM map:
 [ 0.000000] memory: 02000000 @ 00000000 (usable)
 [ 0.000000] Initrd not found or empty - disabling initrd
 [ 0.000000] Zone PFN ranges:
 [ 0.000000] Normal 0x00000000 -> 0x00002000
 [ 0.000000] Movable zone start PFN for each node
 [ 0.000000] early_node_map[1] active PFN ranges
 [ 0.000000] 0: 0x00000000 -> 0x00002000
 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128
 [ 0.000000] Kernel command line: console=ttyS0,115200 root=31:03 rootfstype=squashfs init=/init mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),1024k(kernel),6528k(rootfs),256k(cfg),64k(EEPROM)
 [ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
 [ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
 [ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
 [ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
 [ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
 [ 0.000000] Writing ErrCtl register=00000000
 [ 0.000000] Readback ErrCtl register=00000000
 [ 0.000000] Memory: 29388k/32768k available (2290k kernel code, 3380k reserved, 539k data, 136k init, 0k highmem)
 [ 0.000000] Hierarchical RCU implementation.
 [ 0.000000] NR_IRQS:128
 [ 0.000000] plat_time_init: plat time init done
 [ 0.000000] Console: colour dummy device 80x25
 [ 0.000000] Calibrating delay loop... 259.58 BogoMIPS (lpj=129792)
 [ 0.016000] Mount-cache hash table entries: 512
 [ 0.019000] NET: Registered protocol family 16
 [ 0.021000] ===== ar7240_platform_init: 0
 [ 0.021000] PCIe WLAN H/W found [tries: 1]
 [ 0.021000] PCI init:ar7240_pcibios_init
 [ 0.021000] ar7240_pcibios_init(368): PCI CMD write: 0x356
 [ 0.021000] registering PCI controller with io_map_base unset
 [ 0.030000] bio: create slab at 0
 [ 0.031000] usbcore: registered new interface driver usbfs
 [ 0.032000] usbcore: registered new interface driver hub
 [ 0.032000] usbcore: registered new device driver usb
 [ 0.033000] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
 [ 0.033000] pci 0000:00:00.0: PME# disabled
 [ 0.034000] Returning IRQ 48
 [ 0.035000] Switching to clocksource MIPS
 [ 0.038000] NET: Registered protocol family 2
 [ 0.038000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
 [ 0.040000] TCP established hash table entries: 1024 (order: 1, 8192 bytes)
 [ 0.040000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
 [ 0.040000] TCP: Hash tables configured (established 1024 bind 1024)
 [ 0.040000] TCP reno registered
 [ 0.041000] NET: Registered protocol family 1
 [ 0.041000] AR7240 GPIOC major 0
 [ 0.043000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
 [ 0.043000] JFFS2 version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
 [ 0.044000] msgmni has been set to 57
 [ 0.044000] io scheduler noop registered (default)
 [ 0.071000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
 [ 0.072000] serial8250.0: ttyS0 at MMIO 0xb8020000 (irq = 19) is a 16550A
 [ 0.374000] console [ttyS0] enabled
 [ 0.378000] 6 cmdlinepart partitions found on MTD device ar7240-nor0
 [ 0.385000] Creating 6 MTD partitions on "ar7240-nor0":
 [ 0.390000] 0x000000000000-0x000000040000 : "u-boot"
 [ 0.397000] 0x000000040000-0x000000050000 : "u-boot-env"
 [ 0.404000] 0x000000050000-0x000000150000 : "kernel"
 [ 0.410000] 0x000000150000-0x0000007b0000 : "rootfs"
 [ 0.416000] mtd: partition "rootfs" set to be root filesystem
 [ 0.422000] 0x0000007b0000-0x0000007f0000 : "cfg"
 [ 0.428000] 0x0000007f0000-0x000000800000 : "EEPROM"
 [ 0.435000] usbmon: debugfs is not available
 [ 0.439000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
 [ 0.476000] Port Status c000004
 [ 0.479000] ar7240-ehci ar7240-ehci.0: ATH EHCI
 [ 0.484000] ar7240-ehci ar7240-ehci.0: new USB bus registered, assigned bus number 1
 [ 0.493000] ehci_reset Intialize USB CONTROLLER in host mode: 3
 [ 0.500000] ehci_reset Port Status c000000
 [ 0.504000] ar7240-ehci ar7240-ehci.0: irq 3, io mem 0x1b000000
 [ 0.511000] ehci_reset Intialize USB CONTROLLER in host mode: 3
 [ 0.518000] ehci_reset Port Status c000000
 [ 0.528000] ar7240-ehci ar7240-ehci.0: USB 2.0 started, EHCI 1.00
 [ 0.534000] usb usb1: configuration #1 chosen from 1 choice
 [ 0.540000] hub 1-0:1.0: USB hub found
 [ 0.544000] hub 1-0:1.0: 1 port detected
 [ 0.549000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
 [ 0.556000] u32 classifier
 [ 0.559000] Performance counters on
 [ 0.562000] input device check on
 [ 0.566000] Actions configured
 [ 0.572000] TCP westwood registered
 [ 0.576000] NET: Registered protocol family 10
 [ 0.584000] NET: Registered protocol family 17
 [ 0.589000] Bridge firewalling registered
 [ 0.593000] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
 [ 0.600000] All bugs added by David S. Miller <davem@redhat.com>
 [ 0.606000] ar7240wdt_init: Registering WDT success
 [ 0.622000] VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
 [ 0.630000] Freeing unused kernel memory: 136k freed
 [ 0.649000] Please be patient, while AirOS loads ...
 [ 1.811000] Algorithmics/MIPS FPU Emulator v1.5
 ...mounts done
 ...filesystem init done
 ...base ok
 ...update ok
 ...symlinks ok
 ...httpd ok
 [ 3.334000] CPU 0 Unable to handle kernel paging request at virtual address c00681c2, epc == 800f8010, ra == 800f7f98
 [ 3.345000] Oops[#1]:
 [ 3.345000] Cpu 0
 [ 3.345000] $ 0 : 00000000 802f0000 c00681c2 fffd6c0c
 [ 3.345000] $ 4 : 00020000 00016c0c fffe0000 2203eb70
 [ 3.345000] $ 8 : 00002000 ffffffbf 00080000 00000000
 [ 3.345000] $12 : b4c3484a a13bd6a9 81cd63a0 5caa6d18
 [ 3.345000] $16 : 00000000 00000003 00000010 c0159644
 [ 3.345000] $20 : ffffffff 00000000 00014dce c0159000
 [ 3.345000] $24 : 00000010 80010804
 [ 3.345000] $28 : 81de4000 81de5af0 c006a000 800f7f98
 [ 3.345000] Hi : 00000000
 [ 3.345000] Lo : c437ef00
 [ 3.345000] epc : 800f8010 unlzma+0xc48/0xdd8
 [ 3.345000] Not tainted
 [ 3.345000] ra : 800f7f98 unlzma+0xbd0/0xdd8
 [ 3.345000] Status: 1000ff03 KERNEL EXL IE
 [ 3.345000] Cause : 00800008
 [ 3.345000] BadVA : c00681c2
 [ 3.345000] PrId : 00019374 (MIPS 24Kc)
 [ 3.345000] Modules linked in:
 [ 3.345000] Process ubntconf (pid: 271, threadinfo=81de4000, task=81c21048, tls=00000000)
 [ 3.345000] Stack : 818246c8 0000075f 800a12f0 81802d64 00000004 00000030 0000001d 6c000200
 [ 3.345000] 00000000 00000200 0023b950 800f721c c004b421 c0048000 c004f606 00007606
 [ 3.345000] 05ab8def 0aa57c6d 175e6f03 00000002 01556c0c 0000000a 00000074 000002de
 [ 3.345000] 000002d4 00000000 00000000 c0048000 00000003 00000003 00000003 81c21048
 [ 3.345000] 80300000 81de3c7c 00000000 00000000 0000001f c004f606 0000001f 81cf1d40
 [ 3.345000] ...
 [ 3.345000] Call Trace:
 [ 3.345000] [] unlzma+0xc48/0xdd8
 [ 3.345000] [] lzma_uncompress+0x128/0x270
 [ 3.345000] [] squashfs_read_data+0x484/0x690
 [ 3.345000] [] squashfs_cache_get+0x1cc/0x310
 [ 3.345000] [] squashfs_readpage+0x588/0x8b4
 [ 3.345000] [] __do_page_cache_readahead+0x1c0/0x218
 [ 3.345000] [] ra_submit+0x28/0x34
 [ 3.345000] [] filemap_fault+0x200/0x44c
 [ 3.345000] [] __do_fault+0x74/0x47c
 [ 3.345000] [] handle_mm_fault+0x118/0x50c
 [ 3.345000] [] do_page_fault+0x110/0x320
 [ 3.345000] [] ret_from_exception+0x0/0xc
 [ 3.345000]
 [ 3.345000]
 [ 3.345000] Code: 00661821 02c51023 03c21021 03d61821 26d60001 0803e020 a0720000 8fa50050
 [ 3.345000] Disabling lock debugging due to kernel taint
 ...detect ok

Non riesce a scrivere su virtual address c00681c2, epc == 800f8010, ra == 800f7f98…
Riavvio.

\0x00\0x00

U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.0 e8a5)
DRAM: 32 MB
Flash: 8 MB
Net: eth0, eth1
Hit any key to stop autoboot: 1 \0x08\0x08\0x08 0
ar7240> help

autoscr - run script from memory
? - alias for 'help'
base - print or set address offset
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootelf - Boot from an ELF image in memory
bootm - boot application image from memory
cmp - memory compare
cp - memory copy
crc32 - checksum calculation
echo - echo args to console
erase - erase FLASH memory
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
iminfo - print header information for application image
imls - list all images found in flash
loop - infinite loop on address range
md - memory display
mii - MII utility commands
mm - memory modify (auto-incrementing)
mtdparts- define flash/nand partitions
mtest - simple RAM test
mw - memory write (fill)
nm - memory modify (constant address)
ping\0x09- send ICMP ECHO_REQUEST to network host
printenv- print environment variables
protect - enable or disable FLASH write protection
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv - set environment variables
sleep - delay execution for some time
tftpboot- boot image via network using TFTP protocol
urescue\0x09- start TFTP server and wait for firmware
version - print monitor version

ar7240> urescue

Setting default IP 192.168.1.20
Starting TFTP server...
Using eth0 (192.168.1.20), address: 0x81000000
Waiting for connection: *\0x08-\0x08\\0x08|\0x08/\0x08-\0x08\\0x08|\0x08/\0x08-\0x08\\0x08|\0x08/\0x08-\0x08
Receiving file from 192.168.1.23:60549
Received 512 bytes
Received 1267712 bytes
Received 2526720 bytes
Received 3749376 bytes
Received 4986880 bytes
Received 6232064 bytes
Received 6896830 bytes

Firmware Version: XM.ar7240.v5.5.8.20991.140205.1824
Setting U-Boot environment variables
Un-Protected 1 sectors
Erasing Flash.... done
Erased 1 sectors
Writing to Flash... done
Protected 1 sectors
Will not overwrite u-boot partition! Skipped.
Copying partition 'kernel' to flash memory:
\0x09erasing range 0x9F050000..0x9F14FFFF: ................ done
Erased 16 sectors
\0x09writing to address 0x9f050000, length 0x00100000 ...
Copying partition 'rootfs' to flash memory:
\0x09erasing range 0x9F150000..0x9F6AFFFF: ...................................................................................... done
Erased 86 sectors
\0x09writing to address 0x9f150000, length 0x00560000 ...

Firmware update complete.

Resetting...

U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.0 e8a5)
DRAM: 32 MB
Flash: 8 MB
Net: eth0, eth1
Hit any key to stop autoboot: 1 \0x08\0x08\0x08 0
## Booting image at 9f050000 ...
Image Name: MIPS Ubiquiti Linux-2.6.32.54
Created: 2014-02-05 16:25:36 UTC
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 1047649 Bytes = 1023.1 kB
Load Address: 80002000
Entry Point: 80002000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK

Starting kernel ...

Booting...
\0x00
[ 0.000000] Linux version 2.6.32.54 (buildd@builder) (gcc version 4.1.2) #1 Wed Feb 5 18:25:32 EET 2014
[ 0.000000] flash_size passed from bootloader = 0
[ 0.000000] CPU revision is: 00019374 (MIPS 24Kc)
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 02000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] Zone PFN ranges:
[ 0.000000] Normal 0x00000000 -> 0x00002000
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] early_node_map[1] active PFN ranges
[ 0.000000] 0: 0x00000000 -> 0x00002000
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128
[ 0.000000] Kernel command line: console=ttyS0,115200 root=31:03 rootfstype=squashfs init=/init mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),1024k(kernel),6528k(rootfs),256k(cfg),64k(EEPROM)
[ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
[ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[ 0.000000] Writing ErrCtl register=00000000
[ 0.000000] Readback ErrCtl register=00000000
[ 0.000000] Memory: 29388k/32768k available (2290k kernel code, 3380k reserved, 539k data, 136k init, 0k highmem)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] NR_IRQS:128
[ 0.000000] plat_time_init: plat time init done
[ 0.000000] Console: colour dummy device 80x25
[ 0.000000] Calibrating delay loop... 259.58 BogoMIPS (lpj=129792)
[ 0.016000] Mount-cache hash table entries: 512
[ 0.019000] NET: Registered protocol family 16
[ 0.021000] ===== ar7240_platform_init: 0
[ 0.021000] PCIe WLAN H/W found [tries: 1]
[ 0.021000] PCI init:ar7240_pcibios_init
[ 0.021000] ar7240_pcibios_init(368): PCI CMD write: 0x356
[ 0.021000] registering PCI controller with io_map_base unset
[ 0.030000] bio: create slab at 0
[ 0.031000] usbcore: registered new interface driver usbfs
[ 0.032000] usbcore: registered new interface driver hub
[ 0.032000] usbcore: registered new device driver usb
[ 0.033000] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[ 0.033000] pci 0000:00:00.0: PME# disabled
[ 0.034000] Returning IRQ 48
[ 0.035000] Switching to clocksource MIPS
[ 0.038000] NET: Registered protocol family 2
[ 0.038000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.040000] TCP established hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.040000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.040000] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.040000] TCP reno registered
[ 0.041000] NET: Registered protocol family 1
[ 0.041000] AR7240 GPIOC major 0
[ 0.043000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.043000] JFFS2 version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.044000] msgmni has been set to 57
[ 0.044000] io scheduler noop registered (default)
[ 0.070000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 0.072000] serial8250.0: ttyS0 at MMIO 0xb8020000 (irq = 19) is a 16550A
[ 0.374000] console [ttyS0] enabled
[ 0.378000] 6 cmdlinepart partitions found on MTD device ar7240-nor0
[ 0.385000] Creating 6 MTD partitions on "ar7240-nor0":
[ 0.390000] 0x000000000000-0x000000040000 : "u-boot"
[ 0.397000] 0x000000040000-0x000000050000 : "u-boot-env"
[ 0.403000] 0x000000050000-0x000000150000 : "kernel"
[ 0.410000] 0x000000150000-0x0000007b0000 : "rootfs"
[ 0.416000] mtd: partition "rootfs" set to be root filesystem
[ 0.422000] 0x0000007b0000-0x0000007f0000 : "cfg"
[ 0.428000] 0x0000007f0000-0x000000800000 : "EEPROM"
[ 0.434000] usbmon: debugfs is not available
[ 0.439000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.476000] Port Status c000004
[ 0.479000] ar7240-ehci ar7240-ehci.0: ATH EHCI
[ 0.484000] ar7240-ehci ar7240-ehci.0: new USB bus registered, assigned bus number 1
[ 0.493000] ehci_reset Intialize USB CONTROLLER in host mode: 3
[ 0.500000] ehci_reset Port Status c000000
[ 0.504000] ar7240-ehci ar7240-ehci.0: irq 3, io mem 0x1b000000
[ 0.511000] ehci_reset Intialize USB CONTROLLER in host mode: 3
[ 0.518000] ehci_reset Port Status c000000
[ 0.528000] ar7240-ehci ar7240-ehci.0: USB 2.0 started, EHCI 1.00
[ 0.534000] usb usb1: configuration #1 chosen from 1 choice
[ 0.540000] hub 1-0:1.0: USB hub found
[ 0.544000] hub 1-0:1.0: 1 port detected
[ 0.549000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.556000] u32 classifier
[ 0.559000] Performance counters on
[ 0.562000] input device check on
[ 0.566000] Actions configured
[ 0.572000] TCP westwood registered
[ 0.576000] NET: Registered protocol family 10
[ 0.584000] NET: Registered protocol family 17
[ 0.589000] Bridge firewalling registered
[ 0.593000] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
[ 0.600000] All bugs added by David S. Miller <davem@redhat.com>
[ 0.606000] ar7240wdt_init: Registering WDT success
[ 0.622000] VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
[ 0.630000] Freeing unused kernel memory: 136k freed
[ 0.649000] Please be patient, while AirOS loads ...
[ 1.225000] CPU 0 Unable to handle kernel paging request at virtual address c0068f45, epc == 800f8010, ra == 800f7f98
[ 1.236000] Oops[#1]:
[ 1.236000] Cpu 0
[ 1.236000] $ 0 : 00000000 802f0000 c0068f45 fffc5778
[ 1.236000] $ 4 : 00020000 00005778 fffe0000 06df8374
[ 1.236000] $ 8 : 00002000 ffffffbf 00080000 00000000
[ 1.236000] $12 : 27bdad60 b34da81a 81c763a0 0a1f288d
[ 1.236000] $16 : 00000000 00000002 00000010 c00d2644
[ 1.236000] $20 : ffffffff 00000000 000046bd c00d2000
[ 1.236000] $24 : 00000008 80010804
[ 1.236000] $28 : 81c16000 81c17b00 c006a000 800f7f98
[ 1.236000] Hi : 00000000
[ 1.236000] Lo : 483da700
[ 1.236000] epc : 800f8010 unlzma+0xc48/0xdd8
[ 1.236000] Not tainted
[ 1.236000] ra : 800f7f98 unlzma+0xbd0/0xdd8
[ 1.236000] Status: 1000ff03 KERNEL EXL IE
[ 1.236000] Cause : 00800008
[ 1.236000] BadVA : c0068f45
[ 1.236000] PrId : 00019374 (MIPS 24Kc)
[ 1.236000] Modules linked in:
[ 1.236000] Process init (pid: 1, threadinfo=81c16000, task=81c14938, tls=00000000)
[ 1.236000] Stack : 8180f4c8 000009e0 800a12f0 81802d64 00000003 0000001c 0000001e 6c000200
[ 1.236000] 00000000 000000d1 88000080 800f721c c0049ab0 c0048000 c004d041 00005041
[ 1.236000] 0358578d 03b70ed0 03b70ed0 61192fa0 00005778 0000000a 00000020 00002d94
[ 1.236000] 00000440 00000000 00000000 c0048000 00000003 00000003 00000003 81c14938
[ 1.236000] 80300000 81cec454 00000000 00000000 00000015 c004d041 00000015 81cf1d40
[ 1.236000] ...
[ 1.236000] Call Trace:
[ 1.236000] [] unlzma+0xc48/0xdd8
[ 1.236000] [] lzma_uncompress+0x128/0x270
[ 1.236000] [] squashfs_read_data+0x484/0x690
[ 1.236000] [] squashfs_cache_get+0x1cc/0x310
[ 1.236000] [] squashfs_readpage+0x5e0/0x8b4
[ 1.236000] [] __do_page_cache_readahead+0x1c0/0x218
[ 1.236000] [] ra_submit+0x28/0x34
[ 1.236000] [] page_cache_sync_readahead+0x5c/0x68
[ 1.236000] [] generic_file_aio_read+0x2ac/0x760
[ 1.236000] [] do_sync_read+0xd4/0x13c
[ 1.236000] [] sys_read+0x54/0x98
[ 1.236000] [] stack_done+0x20/0x3c
[ 1.236000]
[ 1.236000]
[ 1.236000] Code: 00661821 02c51023 03c21021 03d61821 26d60001 0803e020 a0720000 8fa50050
[ 1.236000] Disabling lock debugging due to kernel taint
[ 1.450000] Kernel panic - not syncing: Attempted to kill init!

Riavvio e faccio un re-flash con OpenWRT. Niente.

Firmware update complete.

Resetting...

U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.0 e8a5)
DRAM: 32 MB
Flash: 8 MB
Net: eth0, eth1
Hit any key to stop autoboot: 1 \0x08\0x08\0x08 0
## Booting image at 9f050000 ...
Image Name: MIPS OpenWrt Linux-2.6.32.27
Created: 2011-12-21 1:03:50 UTC
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 894165 Bytes = 873.2 kB
Load Address: 80060000
Entry Point: 80060000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK

Starting kernel ...

Linux version 2.6.32.27 (jow@nd-build-02.linux-appliance.net) (gcc version 4.3.3 (GCC) ) #5 Wed Dec 21 01:59:33 CET 2011
bootconsole [early0] enabled
CPU revision is: 00019374 (MIPS 24Kc)
Atheros AR7241 rev 1, CPU:390.000 MHz, AHB:195.000 MHz, DDR:390.000 MHz
Determined physical RAM map:
memory: 02000000 @ 00000000 (usable)
Initrd not found or empty - disabling initrd
Zone PFN ranges:
Normal 0x00000000 -> 0x00002000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
0: 0x00000000 -> 0x00002000
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128
Kernel command line: rootfstype=squashfs,yaffs,jffs2 noinitrd console=ttyS0,115200 board=UBNT-NM mtdparts=spi0.0:256k(u-boot)ro,64k(u-boot-env)ro,1024k(kernel),6528k(rootfs),256k(cfg)ro,64k(EEPROM)ro,7552k@0x50000(firmware)
PID hash table entries: 128 (order: -3, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
Writing ErrCtl register=00000000
Readback ErrCtl register=00000000
Memory: 29276k/32768k available (2126k kernel code, 3492k reserved, 423k data, 152k init, 0k highmem)
SLUB: Genslabs=7, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
NR_IRQS:56
Calibrating delay loop... 259.68 BogoMIPS (lpj=1298432)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
MIPS: machine is Ubiquiti Nanostation M
registering PCI controller with io_map_base unset
bio: create slab at 0
PCI: fixup device 0000:00:00.0
pci 0000:00:00.0: PME# supported from D0 D1 D3hot
pci 0000:00:00.0: PME# disabled
PCI: mapping irq 48 to pin1@0000:00:00.0
Switching to clocksource MIPS
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
NET: Registered protocol family 1
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Registering mini_fo version $Id$
JFFS2 version 2.2. (NAND) (SUMMARY) \0xc2\0xa9 2001-2006 Red Hat, Inc.
yaffs Dec 10 2011 18:14:12 Installing.
msgmni has been set to 57
io scheduler noop registered
io scheduler deadline registered (default)
Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11) is a 16550A
console [ttyS0] enabled, bootconsole disabled
console [ttyS0] enabled, bootconsole disabled
Atheros AR71xx SPI Controller driver version 0.2.4
m25p80 spi0.0: s25fl064k (8192 Kbytes)
7 cmdlinepart partitions found on MTD device spi0.0
Creating 7 MTD partitions on "spi0.0":
0x000000000000-0x000000040000 : "u-boot"
0x000000040000-0x000000050000 : "u-boot-env"
0x000000050000-0x000000150000 : "kernel"
0x000000150000-0x0000007b0000 : "rootfs"
mtd: partition "rootfs" set to be root filesystem
mtd: partition "rootfs_data" created automatically, ofs=32E000, len=482000
0x00000032e000-0x0000007b0000 : "rootfs_data"
0x0000007b0000-0x0000007f0000 : "cfg"
0x0000007f0000-0x000000800000 : "EEPROM"
0x000000050000-0x0000007b0000 : "firmware"
ag71xx_mdio: probed
eth0: Atheros AG71xx at 0xb9000000, irq 4
eth1: Atheros AG71xx at 0xba000000, irq 5
eth1: Found an AR7240 built-in switch
Atheros AR71xx hardware watchdog driver version 0.1.0
TCP westwood registered
NET: Registered protocol family 17
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
Freeing unused kernel memory: 152k freed
Please be patient, while OpenWrt loads ...
CPU 0 Unable to handle kernel paging request at virtual address c007243c, epc == 80172210, ra == 80172188
Oops[#1]:
Cpu 0
$ 0 : 00000000 80300000 c007243c 00020000
$ 4 : ffffd090 0001d090 fffe0000 80006000
$ 8 : 00002000 00000000 802dcc50 e72eb9c7
$12 : 818fe114 818fe100 00000001 802d46b4
$16 : 0819d08f 00000004 00000000 c0143644
$20 : 0001c4cc 00000007 0819d090 c0073000
$24 : 00000000 8007507c
$28 : 819ea000 819ebab8 c0143000 80172188
Hi : 00000002
Lo : 00000000
epc : 80172210 0x80172210
Not tainted
ra : 80172188 0x80172188
Status: 1000f403 KERNEL EXL IE
Cause : 00800008
BadVA : c007243c
PrId : 00019374 (MIPS 24Kc)
Modules linked in:
Process hotplug2 (pid: 152, threadinfo=819ea000, task=81880d98, tls=00000000)
Stack : 81040050 00000002 800ff804 818e3000 00000004 00000036 0000001f 6d000200
00000000 000001fc d8000000 8017123c c0058dee c0051000 c005985c 0000885c
3602d5e3 7ea8ba27 6cf160d9 00000004 00000020 00000078 000001fc 00000000
c0051000 00000003 00000003 00000001 00000000 c0143644 c0143a68 c0143664
00000007 8141b0d8 80310000 00000023 818e308c 00000000 00000000 c005985c
...
Call Trace:[] 0x800ff804
[] 0x8017123c
[] 0x8012af40
[] 0x8012addc
[] 0x80127558
[] 0x80093854
[] 0x80127e00
[] 0x80128d88
[] 0x800aff60
[] 0x80129f1c
[] 0x800b8034
[] 0x800b80c8
[] 0x800b8614
[] 0x800b59f8
[] 0x800b1b00
[] 0x800da3a4
[] 0x80093854
[] 0x800ca888
[] 0x80073cf0
[] 0x800db010
[] 0x800e01b8
[] 0x800df1e4
[] 0x800e07b4
[] 0x800e36e4
[] 0x8006fbc4
[] 0x80062544

Code: 5040fffe 00832021 02e41021 02f41021 a0500000 8fa400bc 1080000d 26940001
Disabling lock debugging due to kernel taint

Ecco il memtest fallimentare

U-Boot 1.1.4.2-s445 (Sep 6 2010 - 14:46:33)

Board: Ubiquiti Networks XM board (rev 1.0 e8a5)
DRAM: 32 MB
Flash: 8 MB
Net: eth0, eth1
Hit any key to stop autoboot: 1 \0x08\0x08\0x08 0
ar7240> mtest

Pattern 00000000 Writing... \0x08\0x08\0x08\0x08\0x08\0x08\0x08\0x08\0x08\0x08

Riferimenti simili:
http://community.ubnt.com/t5/airOS-Software-Configuration/Dead-flash/td-p/591171
https://community.ubnt.com/t5/airOS-Software-Configuration/AirOS-5-5-lighttpd-kernel-panic/td-p/300702
http://community.ubnt.com/t5/Routerstation-Platform/Kernel-OOPSing-on-RS/td-p/61404

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