From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <39D475B0.94E3A7E8@siemens.at> Date: Fri, 29 Sep 2000 12:57:52 +0200 From: Rainer Kloud MIME-Version: 1.0 To: linuxppc-embedded Subject: root filesystem over nfs Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: 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@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.. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/