kernel oops when run udevtrigger on arm

kernel oops when run udevtrigger on arm

[Dimitry N.]

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I get kernel oops when I run udevtrigger in udev init scripts.
without running udevtrigger /dev/ dir is not populated by device nodes :(

the oops attached.

hardware:
EVM9200 board:
http://ucrouter.ru/download/evm9200-sch.pdf
http://ucrouter.ru/download/evm9200_bom.txt
http://ucrouter.ru/download/evm9200_ast.png

software:
linux kernel 2.6.17.7 + patch for at91rm9200 chip http://maxim.org.za/AT91RM9200/2.6/2.6.17-at91.patch.gz
other system: cross-lfs Version SVN-2.0.0-20060807-ARM http://cross-lfs.org/view/clfs-2.0/arm

any ideas what to do ?

--
	Dimitry


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Unable to handle kernel paging request at virtual address c2c70000
pgd = c18a0000
[c2c70000] *pgd=00000000
Internal error: Oops: 5 [#1]
Modules linked in:
CPU: 0
PC is at _memcpy_fromio+0x10/0x28
LR is at cfi_amdstd_read+0x224/0x298
pc : [<c0023848>]    lr : [<c0100ed4>]    Not tainted
sp : c0335f1c  ip : c0335f2c  fp : c0335f28
r10: 003f0000  r9 : 00000200  r8 : 00010000
r7 : c01d8928  r6 : c02d2aa0  r5 : 00000000  r4 : 003f0000
r3 : 00000000  r2 : 000001ff  r1 : c2c70000  r0 : c194d000
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
Control: C000717F  Table: 218A0000  DAC: 00000017
Process mtdblockd (pid: 134, stack limit = 0xc0334198)
Stack: (0xc0335f1c to 0xc0336000)
5f00:                                                                c0335f70 
5f20: c0335f2c c0100ed4 c0023848 00000038 00000200 c02d2aa0 00000000 003f0000 
5f40: 00000000 c02d2ad8 00000200 003f0000 c1fbbba0 c194d000 00010000 c0367e00 
5f60: 00000000 c0335fac c0335f74 c00fb250 c0100cc0 c0335f80 c194d000 00000200 
5f80: 00000000 00000008 00001f80 c02e4cf0 c194d000 c01d878c c0334000 c02d4920 
5fa0: c0335ff4 c0335fb0 c00fbd98 c00fb17c c02d4930 c02d9af4 00000000 c0303ae0 
5fc0: c002f0e4 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
5fe0: 00000000 00000000 00000000 c0335ff8 c0034d50 c00fbc30 e5d13001 e243305b 
Backtrace: 
[<c0023838>] (_memcpy_fromio+0x0/0x28) from [<c0100ed4>] (cfi_amdstd_read+0x224/0x298)
[<c0100cb0>] (cfi_amdstd_read+0x0/0x298) from [<c00fb250>] (mtdblock_readsect+0xe4/0x128)
[<c00fb16c>] (mtdblock_readsect+0x0/0x128) from [<c00fbd98>] (mtd_blktrans_thread+0x178/0x244)
[<c00fbc20>] (mtd_blktrans_thread+0x0/0x244) from [<c0034d50>] (do_exit+0x0/0x7a8)
Code: e1a0c00d e92dd800 e24cb004 ea000001 (e4d13001) 

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Re: kernel oops when run udevtrigger on arm

[Greg KH]

On Wed, Aug 09, 2006 at 10:04:35PM +0400, Dimitry N. wrote:
> I get kernel oops when I run udevtrigger in udev init scripts.
> without running udevtrigger /dev/ dir is not populated by device nodes :(
> 
> the oops attached.

Can you run strace on udevtrigger to see which sysfs 'uevent' file is
causing this oops to happen?  Odds are that a module is getting loaded
that you are not expecting to be loaded.

thanks,

greg k-h

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