[LEDE-DEV] [PATCH v2] ramips: add support for Ubiquiti EdgeRouter X-SFP

[p.wassi at gmx.at]

Hi guys,

I may be hijacking this specific thread, but as 'testing' was mentioned here...
I'm running an Edgerouter X since yesterday (not the -SPF version!) on LEDE r4356
and am getting these kernel errors/warnings every five minutes or so:

> [  470.410000] INFO: rcu_sched detected stalls on CPUs/tasks:
> [  470.420000] 	1-...: (127 GPs behind) idle=ee6/0/0 softirq=9641/9643 fqs=1 
> [  470.430000] 	(detected by 3, t=6004 jiffies, g=898, c=897, q=606)
> [  470.440000] Task dump for CPU 1:
> [  470.450000] swapper/1       R running      0     0      1 0x00100000
> [  470.460000] Stack : 00000000 0e406087 0000006d ffffffff 00000061 7795a2c0 804df2a4 80490000
> [  470.460000] 	  8048c75c 00000001 00000001 8048c540 8048c724 80490000 00000000 800135e4
> [  470.460000] 	  1100fc03 00000003 8fc70000 8fc71ec0 80490000 8005ecc8 1100fc03 00000001
> [  470.460000] 	  00000000 80490000 804df2a4 8005ecc0 80490000 8001b1a8 1100fc03 00000000
> [  470.460000] 	  00000004 8048c4a0 000000a0 8001b1b0 b6eeeefd a02eacbf 5d3cafc3 7dbbdccc
> [  470.460000] 	  ...
> [  470.530000] Call Trace:
> [  470.540000] [<8000be98>] __schedule+0x574/0x758
> [  470.550000] [<800135e4>] r4k_wait_irqoff+0x0/0x20
> [  470.550000] 
> [  470.560000] rcu_sched kthread starved for 6016 jiffies! g898 c897 f0x0 s3 ->state=0x1

Kernel is 4.4.71

Also, just while editing a config file the router rebooted.
Does someone else also have this issue?

Best regards,
P. Wassi


> On 07/06/17 12:10, John Crispin wrote:
> 
> 
> On 07/06/17 01:36, Sven Roederer wrote:
> > John,
> >
> > just checked with master build f500799 as initrd-kernel. Looks fine as
> > I can see from bootlog.
> > Anything special to test?
> >
> > [    1.710000] MediaTek Nand driver init, version v2.1 Fix AHB virt2phys error
> > [    1.720000] Allocate 16 byte aligned buffer: 80592f90
> > [    1.730000] Enable NFI Clock
> > [    1.740000] # MTK NAND # : Use HW ECC
> > [    1.740000] Device found in MTK table, ID: 1da, EXT_ID: 909546
> > [    1.760000] Support this Device in MTK table! 1da
> > [    1.770000] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xda
> > [    1.780000] nand: AMD/Spansion NAND 256MiB 3,3V 8-bit
> > [    1.790000] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 128
> > [    1.800000] [NAND]select ecc bit:12, sparesize :112 spare_per_sector=28
> > [    1.820000] Scanning device for bad blocks
> > [    2.520000] 6 ofpart partitions found on MTD device MT7621-NAND
> > [    2.530000] Creating 6 MTD partitions on "MT7621-NAND":
> > [    2.540000] 0x000000000000-0x000000080000 : "u-boot"
> > [    2.550000] 0x000000080000-0x0000000e0000 : "u-boot-env"
> > [    2.560000] 0x0000000e0000-0x000000140000 : "factory"
> > [    2.570000] 0x000000140000-0x000000440000 : "kernel1"
> > [    2.580000] 0x000000440000-0x000000740000 : "kernel2"
> > [    2.590000] 0x000000740000-0x00000ff00000 : "ubi"
> > [    2.610000] [mtk_nand] probe successfully!
> > [    2.610000] Signature matched and data read!
> > [    2.620000] load_fact_bbt success 2047
> >
> >
> > Sven
> Thanks for testing, i just wanted a 2nd test result for the nand support 
> on v4.9. i think i'll just switch ramips to v4.9 and hope all goes well.
> 
>      John
> 
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