#21857: OpenWRT "CHAOS CALMER (15.05, r46767)" + TP-LINK "TL-WR842ND V2" hangs 
on
kernel booting sometimes..
---------------------+--------------------------------
 Reporter:  dexen@…  |      Owner:  developers
     Type:  defect   |     Status:  new
 Priority:  high     |  Milestone:
Component:  kernel   |    Version:  Chaos Calmer 15.05
 Keywords:           |
---------------------+--------------------------------
 Hello,

 I faced the problem that sometime (approximately once per 10 times)
 OpenWRT cannot boot the kernel.
 I used the UART hw and see that it freezes on the following place:


 {{{
 U-Boot 1.1.4 (Sep 22 2014 - 18:45:16)

 U-boot AP123


 DRAM:  32 MB
 id read 0x100000ff
 Flash:  8 MB
 Using default environment

 In:    serial
 Out:   serial
 Err:   serial
 Net:   ag934x_enet_initialize...
 wasp reset mask:c03300
 WASP ----> S27 PHY
 file: ag934x.c,line: 180==: set LAN&WAN SWAP. --debug by HouXB
 GMAC: cfg1 0x5 cfg2 0x7114
 eth0: ba:be:fa:ce:08:41
 s27 reg init
 athrs27_phy_setup ATHR_PHY_CONTROL 4: 0x1000
 athrs27_phy_setup ATHR_PHY_SPEC_STAUS 4: 0x10
 eth0 up
 WASP ----> S27 PHY
 file: ag934x.c,line: 180==: set LAN&WAN SWAP. --debug by HouXB
 GMAC: cfg1 0xf cfg2 0x7214
 eth1: ba:be:fa:ce:08:41
 s27 reg init lan
 ATHRS27: resetting s27
 ATHRS27: s27 reset done
 athrs27_phy_setup ATHR_PHY_CONTROL 0: 0x1000
 athrs27_phy_setup ATHR_PHY_SPEC_STAUS 0: 0x10
 athrs27_phy_setup ATHR_PHY_CONTROL 1: 0x1000
 athrs27_phy_setup ATHR_PHY_SPEC_STAUS 1: 0x10
 athrs27_phy_setup ATHR_PHY_CONTROL 2: 0x1000
 athrs27_phy_setup ATHR_PHY_SPEC_STAUS 2: 0x10
 athrs27_phy_setup ATHR_PHY_CONTROL 3: 0x1000
 athrs27_phy_setup ATHR_PHY_SPEC_STAUS 3: 0x10
 eth1 up
 eth0, eth1
 is_auto_upload_firmware=0
 Autobooting in 1 seconds
 ## Booting image at 9f020000 ...
    Uncompressing Kernel Image ... OK

 Starting kernel ...

 [    0.000000] Linux version 3.18.20 (buildbot@builder1) (gcc version
 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r46450) ) #1 Fri Sep 4 21:55:57 CEST
 2015
 [    0.000000] bootconsole [early0] enabled
 [    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
 [    0.000000] SoC: Atheros AR9341 rev 3
 [    0.000000] Determined physical RAM map:
 [    0.000000]  memory: 02000000 @ 00000000 (usable)
 [    0.000000] Initrd not found or empty - disabling initrd
 [    0.000000] Zone ranges:
 [    0.000000]   Normal   [mem 0x00000000-0x01ffffff]
 [    0.000000] Movable zone start for each node
 [    0.000000] Early memory node ranges
 [    0.000000]   node   0: [mem 0x00000000-0x01ffffff]
 [    0.000000] Initmem setup node 0 [mem 0x00000000-0x01ffffff]
 [    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] Built 1 zonelists in Zone order, mobility grouping on.
 Total pages: 8128
 [    0.000000] Kernel command line:  board=TL-WR842N-v2
 console=ttyS0,115200 rootfstype=squashfs,jffs2 noinitrd
 [    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] Writing ErrCtl register=00000000
 [    0.000000] Readback ErrCtl register=00000000
 [    0.000000] Memory: 28516K/32768K available (2621K kernel code, 129K
 rwdata, 344K rodata, 224K init, 194K bss, 4252K reserved)
 [    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
 [    0.000000] NR_IRQS:51
 [    0.000000] Clocks: CPU:535.000MHz, DDR:400.000MHz, AHB:200.000MHz,
 Ref:25.000MHz
 [    0.000000] Calibrating delay loop... 266.64 BogoMIPS (lpj=1333248)
 [    0.080000] pid_max: default: 32768 minimum: 301
 [    0.080000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
 [    0.090000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096
 bytes)
 [    0.100000] NET: Registered protocol family 16
 [    0.100000] MIPS: machine is TP-LINK TL-WR842N/ND v2
 [    0.560000] Switched to clocksource MIPS
 [    0.560000] NET: Registered protocol family 2
 [    0.570000] TCP established hash table entries: 1024 (order: 0, 4096
 bytes)
 [    0.570000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
 [    0.580000] TCP: Hash tables configured (established 1024 bind 1024)
 [    0.580000] TCP: reno registered
 [    0.590000] UDP hash table entries: 256 (order: 0, 4096 bytes)
 [    0.590000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
 [    0.600000] NET: Registered protocol family 1
 [    0.600000] futex hash table entries: 256 (order: -1, 3072 bytes)
 [    0.630000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
 [    0.630000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME)
 (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
 [    0.640000] msgmni has been set to 55
 [    0.650000] io scheduler noop registered
 [    0.650000] io scheduler deadline registered (default)
 [    0.650000] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
 [    0.660000] console [ttyS0] disabled

 }}}

 Then nothing happens, I need to reset device to booting again...

--
Ticket URL: <https://dev.openwrt.org/ticket/21857>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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