[uClinux-dev] BAD ADDRESS

From: Thomas Chen (tchen@on-go.com)
Date: Sat Sep 07 2002 - 21:30:05 EDT

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i am porting 2.47 uClinux to OKI and i am getting something very
STRANG...

basically i am failing to OPEN an initial console

i have traced the problem from

open("/dev/console")
which calls sys_open        [linux/fs/open.c]

which calls getname()                [linux/fs/namei.c]
which calls do_getname <--- inline  [linux/fs/namei.c]

in do_getname, the first thing it does is COMPARING the address
of the filename string to something called  TASK_SIZE
(this does not make sense since this open is not from userland but from
the
start up... presumably in system space)

and TASK_SIZE is defined as 0x1a00-0000.... all my code are sitting
at 0xc000-0000 and above... and of course.. that failed MISERABLY with
EFAULT (bad address error)...

anyone with idea what this mean???? especially for NON-MMU system...
we are not working with logical address space????

thanks

tom


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