root filesystem over nfs
ZHANG,HAI-TAO (Non-A-China,ex1)
hai-tao_zhang at non.agilent.com
Sat Sep 30 01:15:14 EST 2000
Hi,
I met the same problem with 2.4.0-test2 or test9 kernel on the sandpoint
603e/MPC107. The problem happened on executing /sbin/init both on nfsroot or
root fs on IDE. The backtrace and printk messages show that exeception(or
hang-up) is in pad_zero() from load_elf_binary (fs/binfmt_elf.c).
Thanks,
Haitao Zhang
> -----Original Message-----
> From: Rainer Kloud [mailto:rainer.kloud at siemens.at]
> Sent: Friday, September 29, 2000 6:58 PM
> To: linuxppc-embedded
> Subject: root filesystem over nfs
>
>
>
> Dear All,
>
> I'm porting the 2.4.0-test4 kernel to my Scout Board
> (MPC750/MPC8260) and I have finished everything until
> executeing the init process (shell) on the remote
> filesystem (mounted over nfs).
>
> When the kernel executes the init process (in my case
> a programm which calls only a printf and then sleeps
> forever) I get a Machine check exception (the backtrace
> tells me in set_brk called from load_elf_binary).
>
> Does anybody know whats going wrong? Whow has my remote
> root filesystem look like (I have compiled my own glibc,
> modprobe, sh and ls)? Is there any information on the web
> available?
>
> My remote filesystem looks like the following:
>
> PCC141:/tftpboot/LinuxPQ2 # ls -lR
> total 5
> drwxr-xr-x 5 root root 1024 Sep 29 09:56 .
> drwxrwxrwx 5 root root 1024 Sep 25 10:08 ..
> drwxr-xr-x 2 root root 1024 Sep 29 13:06 bin
> drwxr-xr-x 2 root root 1024 Sep 8 1998 dev
> drwxr-xr-x 2 root root 1024 Sep 29 13:03 lib
> lrwxrwxrwx 1 root root 3 Sep 29 09:56 sbin -> bin
>
> bin:
> total 849
> drwxr-xr-x 2 root root 1024 Sep 29 13:06 .
> drwxr-xr-x 5 root root 1024 Sep 29 09:56 ..
> -rwxr-xr-x 1 root root 67907 Sep 29 10:56 depmod
> -rwxr-xr-x 1 root root 106133 Sep 29 10:56 insmod
> -rwxr-xr-x 1 root root 359 Sep 29 10:56
> insmod_ksymoops_clean
> -rwxr-xr-x 1 root root 106133 Sep 29 10:56 kallsyms
> -rwxr-xr-x 1 root root 451 Sep 29 10:56 kernelversion
> -rwxr-xr-x 1 root root 106133 Sep 29 10:56 ksyms
> -rwxr-xr-x 1 root root 54584 Sep 8 1998 ls
> -rwxr-xr-x 1 root root 106133 Sep 29 10:56 lsmod
> -rwxr-xr-x 1 root root 57876 Sep 29 10:56 modinfo
> -rwxr-xr-x 1 root root 106133 Sep 29 11:31 modprobe
> -rwxr-xr-x 1 root root 106133 Sep 29 10:56 rmmod
> -rwxr-xr-x 1 root root 33073 Sep 29 10:56 sh
>
> dev:
> total 2
> drwxr-xr-x 2 root root 1024 Sep 8 1998 .
> drwxr-xr-x 5 root root 1024 Sep 29 09:56 ..
> lrwxrwxrwx 1 root root 5 Sep 29 09:51
> console -> ttyS0
> crw-r--r-- 1 root root 5, 0 Sep 8 1998 tty
> crw-r--r-- 1 root root 4, 64 Sep 8 1998 ttyS0
>
> lib:
> total 4456
> drwxr-xr-x 2 root root 1024 Sep 29 13:03 .
> drwxr-xr-x 5 root root 1024 Sep 29 09:56 ..
> -rwxr-xr-x 1 root root 379736 Sep 29 11:07 ld-2.1.3.so
> lrwxrwxrwx 1 root root 11 Sep 29 11:08 ld.so.1 ->
> ld-2.1.3.so
> -rwxr-xr-x 1 root root 4160040 Sep 29 11:08 libc-2.1.3.so
> lrwxrwxrwx 1 root root 13 Sep 29 11:09 libc.so.6 ->
> libc-2.1.3.so
>
> Does anybody know whats going wrong, and what should
> I try to get the init programm running?
>
> Thank you,
> Rainer
>
>
>
> scout> go 600000
> Disable Cash !!!
> Jump to Addr: 0x600000 ...
> loaded at: 00600000 0060B274
> relocated to: 00400000 0040B274
> board data at: 0000002E 0000005A
> relocated to: 00200100 0020012C
> zimage at: 00606000 00680A51
> avail ram: 00681000 02000000
>
> Linux/PPC load:
> Uncompressing Linux...done.
> Now booting the kernel
> Total memory = 32MB; using 128kB for hash table (at c0160000)
> Linux version 2.4.0-test4 (kloud at PCC141) (gcc version 2.95.2 19991024
> (release)) #74 Fri Sep 29 12:40:20 CEST 2000
> Boot arguments: root=/dev/nfs rw
> On node 0 totalpages: 8192
> zone(0): 8192 pages.
> zone(1): 0 pages.
> zone(2): 0 pages.
> Kernel command line: root=/dev/nfs rw
> Calibrating delay loop... 3434.09 BogoMIPS
> Memory: 30720k available (912k kernel code, 388k data, 52k init)
> [c0000000,c2000000]
> Dentry-cache hash table entries: 4096 (order: 3, 32768 bytes)
> Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
> Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 2048 (order: 2, 16384 bytes)
> POSIX conformance testing by UNIFIX
> Linux NET4.0 for Linux 2.3
> Based upon Swansea University Computer Society NET3.039
> NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
> NET4: Linux TCP/IP 1.0 for NET4.0
> IP Protocols: ICMP, UDP, TCP, IGMP
> IP: routing cache hash table of 512 buckets, 4Kbytes
> TCP: Hash tables configured (established 2048 bind 2048)
> Starting kswapd v1.6
> CPM UART driver version 0.01
> ttyS00 at 0x8000 is a SCC
> pty: 256 Unix98 ptys configured
> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
> loop: registered device at major 7
> loop: enabling 8 loop devices
> fcc_startup: gfmr: 0x2000003c, fccm: 0x1a0000, mask: 0x1a, fcce: 0x0,
> fpsmr: 0x80, fdsr: 0xd555
> eth0: FCC ENET Version 0.2, 08:00:06:08:e6:16
> Serial driver version 5.01 (2000-05-29) with no serial options enabled
> PPP generic driver version 2.4.1
> IP-Config: Entered.
> IP-Config: Opened eth0 (able=1)
> BOOTP: XID=72eef6f4
> Sending BOOTP requests....ic_bootp_recv
> BOOTP: Got extension 01 ff ff ff 00
> BOOTP: Got extension 11 2f 74 66 74 70 62 6f 6f 74 2f 4c 69
> 6e 75 78 50
> 51 32
> ic_bootp_recv
> OK
> IP-Config: Got BOOTP answer from 195.9.17.222, my address is
> 195.9.17.216
> IP-Config: device=eth0, local=c30911d8, server=c30911de,
> boot=c30911de,
> gw=ffffffff, mask=ffffff00
> IP-Config: host=195.9.17.216, domain=(none), path=`/tftpboot/LinuxPQ2'
> kmem_create: Forcing size word alignment - nfs_fh
> Looking up port of RPC 100003/2 on 195.9.17.222
> Looking up port of RPC 100005/2 on 195.9.17.222
> VFS: Mounted root (nfs filesystem).
> Freeing unused kernel memory: 52k init
> init: execute /bin/sh
> Machine check in kernel mode.
> Caused by (from SRR1=49030): Transfer error ack signal
> NIP: C000D5E4 XER: 20000000 LR: C004B830 REGS: c0129a30 TRAP: 0200
> MSR: 00049030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
> TASK = c0128000[6] 'modprobe' Last syscall: 11
> last math 00000000 last altivec 00000000
> GPR00: 000001E1 C0129AE0 C0128000 00000000 00000784 00000000 10023890
> 00000000
> GPR08: 30000000 00000000 C01271E0 C02491E0 0000000C D4B1D575 1002387C
> 100234C8
> GPR16: 10000000 1002387C 1002387C 00000002 100242F6 30010654 C0215620
> 00000006
> GPR24: C01271E0 100234C8 00001812 00000000 1002387C 1002387C C0129C78
> C0232720
> Call backtrace:
> C004B7E0 C004C850 C003D44C C003D808 C0006B70 C00048AC C00201CC
> C00202A8 C00095B0
> Kernel panic: machine check
> Rebooting in 180 seconds..
>
>
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