Re: MPC8313E RDB: Badness at fs/sysfs/dir.c:463

[Mike Dyer <mike.dyer@provision-comm.com>]

Hi,

On Wed, 2008-10-15 at 11:06 +0100, Mike Dyer wrote:
> Hi Kumar,
> 
> On Tue, 2008-10-14 at 09:35 -0500, Kumar Gala wrote: 
> > On Oct 14, 2008, at 9:12 AM, Mike Dyer wrote:
> > 
> > > Hi All,
> > >
> > > Apologies for the bad formatting of the previous message...
> > >
> > > I've just pulled the 2.6.27 kernel from git and am trying it out on  
> > > my MPC8313E RDB dev kit.  I get the following badness during boot  
> > > (the complete boot record is attached later) :
> > 
> > can you enable kernel symbols in your build (CONFIG_KALLSYMS)
> 
> I can, but it no longer boots...  Will keep trying.
> 
> I've gone through my system.map and pulled out the call stack, if that
> helps.  I put a printk in sysfs_add_one, and it appears it is being
> called with sd->s_name = 'e00082a8.dma'

I believe the DMA is being added twice, because it occurs twice within the mpc8313erdb.dts device tree.  Once by itself, and once within a sleep-nexus.

Is that right / normal ?

> > ------------[ cut here ]------------
> > Badness at c00c5b50 [verbose debug info unavailable]
> > NIP: c00c5b50 LR: c00c5b38 CTR: 00000000
> > REGS: c7827d90 TRAP: 0700   Not tainted  (2.6.27)
> > MSR: 00029032 <EE,ME,IR,DR>  CR: 22022042  XER: 20000000
> > TASK = c7816400[1] 'swapper' THREAD: c7826000
> > GPR00: c00c5b38 c7827e40 c7816400 ffffffef c7800e5c c7800b7c c7811570 00000000 
> > GPR08: 000001a0 c0370000 00000048 00000000 82044048 100b224c 07ffb000 00000000 
> > GPR16: 07ff09e0 07ff94c8 00000000 00000000 00000000 c035a76c c035a740 c7ace610 
> > GPR24: 00000000 00000000 00000000 00000001 c7811570 fffffffe c7acdc00 c7827e58 
> > Call Trace:
> > [c7827e40] [c00c5b38] 0xc00c5b38 (unreliable) sysfs_add_one
> > [c7827e50] [c00c6dc0] 0xc00c6dc0              sysfs_do_create_link
> > [c7827e80] [c0182d40] 0xc0182d40              bus_add_device
> > [c7827ea0] [c018153c] 0xc018153c              device_add
> > [c7827ef0] [c0213a14] 0xc0213a14              of_device_register
> > [c7827f00] [c0009818] 0xc0009818              of_platform_device_create
> > [c7827f10] [c00098c0] 0xc00098c0              of_platform_bus_create
> > [c7827f30] [c0009a30] 0xc0009a30              of_platform_bus_probe
> > [c7827f50] [c03281d4] 0xc03281d4              __machine_initcall_mpc831x_rdb_declare_of_platform_devices
> > [c7827f60] [c0003874] 0xc0003874              do_one_initcall
> > [c7827fd0] [c031317c] 0xc031317c              kernel_init
> > [c7827ff0] [c001216c] 0xc001216c              kernel_thread
> 
> > 
> > - k
> 
> Cheers,
> Mike
> 

Cheers,
Mike