Re: Problem with user-space programs on 405GP: linux 2.6 oops

[Vladimir <vova-ks@yandex.ru>]

On Tuesday 02 November 2004 03:54, Vladimir wrote:
> Hello All !
> I'm trying to run linux (2.4.22) on embedded PowerPC (405GP). It boots
> nice, but when it tries to execute /sbin/init it hangs. Last console
> messages are:
>
> VFS: Mounted root (nfs filesystem).
> Freeing unused kernel memory: 56k init 4k prep
>
> I've tried to replace /sbin/init by my own executable - it's definitely
> have not been executed.
> I've traced it to the "last point" in kernel-mode (instruction rfi in file
> arch/ppc/kernel/entry.S:389). Before this point everything is all right.
> But after this instruction kernel just hangs.
> After this sysrq-t prints that process init are running at c0007190 (this
> is in the arch_kernel_thread).
> sysrq-p does not print any registers, just the line "SysRq : Show Regs".
>
> Could someone give me any tips how to fix this trouble ?

Hello All !
I've tried linux 2.6.8.1 and it gives me the following oops:

VFS: Mounted root (nfs filesystem) readonly.
Freeing unused kernel memory: 68k init
Oops: kernel access of bad area, sig: 11 [#1]
NIP: C00C032C LR: C00C0518 SP: C3F87D90 REGS: c3f87ce0 TRAP: 0300    Not 
tainted
MSR: 00029230 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: 00000000, DSISR: 00000000
TASK = c3f859c0[1] 'init' THREAD: c3f86000Last syscall: 5
PLB0: bear= 0x00a2f48e acr=   0x00000000 besr=  0x00000000
PLB0 to OPB: bear= 0x0a201000 besr0= 0x00000000 besr1= 0x00000000

GPR00: 00000000 C3F87D90 C3F859C0 00000000 00000001 00000000 C027EF50 C3FED0D0
GPR08: 00000080 00000000 C027EE00 C027EE00 22000022 1001F0B8 03FE3200 007FFF2B
GPR16: 00000000 00000001 007FFF00 FFFFFFFF 03FDE850 00000000 03F9FE88 00000001
GPR24: 00000102 10005844 C01D1410 00000001 00000000 C01D1794 00000000 00000000
NIP [c00c032c] visual_init+0xa0/0x1c4
LR [c00c0518] vc_allocate+0xc8/0x150
Call trace:
 [c00c0518] vc_allocate+0xc8/0x150
 [c00c42c0] con_open+0x50/0xc0
 [c00b200c] tty_open+0x2a4/0x548
 [c0057c44] chrdev_open+0xf0/0x184
 [c004cc74] dentry_open+0x164/0x26c
 [c004cb0c] filp_open+0x68/0x6c
 [c004d030] sys_open+0x68/0xa0
 [c0004540] ret_from_syscall+0x0/0x48
Kernel panic: Attempted to kill init!
 <0>Rebooting in 180 seconds..

-- 
         Vladimir