you cpu: 00001800
RC32334 ??? I dont know it.
epc : 80105088 Not tainted
It is the exception VICTIM.Could you offer the instruction at 0x80105088?
Status: 10018003
you can analysis this register for information,I dont know the cpu type,so Status...
Cause : 0000000c
in my cpu(r3000 similar) means ExcCode 3,TLB miss
It seems to me that NULL pointer has been refered in kernel,at 0x80105088.
you could change the kernel,or try to find out where the NULL pointer is generated.
Just FYI.
-----Original Message-----
From: embedlf [mailto:embedlf@citiz.net]
Sent: Thursday, September 18, 2003 9:22 AM
To: linux-mips@linux-mips.org
Subject: the problem about open file on ramdisk
linux-mips:
I use initrd ramdisk as rootfs on my mips cpu board.But after compiling kernel and download it to the board,that print the error message.Following is the message.
CPU revision is: 00001800
Primary instruction cache 64kb, linesize 16 bytes.
Primary data cache 16kb, linesize 16 bytes.
Linux version 2.4.18-MIPS-01.01 (l@l) (gcc version 2.96) #147 三 9月 17 15:21:28 CST 2003
Determined physical RAM map:
memory: 04000000 @ 00000000 (usable)
Initial ramdisk at: 0x80270000 (1917091 bytes)
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line:
Calibrating delay loop... 299.00 BogoMIPS
Memory: 59992k/65536k available (1281k kernel code, 5544k reserved, 1976k data, 72k init, 0k highmem)
Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes)
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
Checking for 'wait' instruction... available.
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
Journalled Block Device driver loaded
Dummy keyboard driver installed.
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
block: 128 slots per queue, batch=32
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
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 4096 bind 4096)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 1872k freed
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 72k freed
kernel BUG at traps.c:627!
Unable to handle kernel paging request at virtual address 00000000, epc == 80105088, ra == 80105088
Oops in fault.c:do_page_fault, line 205:
$0 : 00000000 10018000 0000001b 00000000 80262d10 00000001 00000001 00000000
$8 : 00001289 00001289 80450000 80448139 00000000 00000000 fffffff9 0000000a
$16: 80251000 8113bca8 00000440 8110e320 8116f660 00000000 00000000 00000000
$24: ffffffff 8113bb4a 8113a000 8113bc88 80458538 80105088
Hi : 00000000
Lo : 00000200
epc : 80105088 Not tainted
Status: 10018003
Cause : 0000000c
Process swapper (pid: 1, stackpage=8113a000)
Stack: 80229740 80229738 00000273 10018001 80251000 8116d000 00000440 80103f4c
83a202a0 8013147c 83a20660 00000000 83a20660 80263dec 00000000 80252000
80440000 8010a480 80251000 00000000 00000250 10018001 00000000 80225ad8
00ff0000 000003e8 00000001 80232700 80254000 8116f260 80251000 8116d000
00000440 8110e320 8116f660 00000000 00000000 00000000 00000400 81169000
8046a8c0 ...
Call Trace:
Code: 24a59738 0c045adb 24060273 <ac000000> 8e2200ac 04410002 8e2400a0 24840004 24820004
Kernel panic: Attempted to kill init!
<0>Rebooting in 180 seconds..
At the address 80105088, there is the function do_ri() in traps.c. I found that this fault
was caused by "if (open("/dev/console", O_RDWR, 0) < 0)".Why?
please help me to analyse this fault.How to conquer it?
embedlf
embedlf@citiz.net
2003-09-18
