From: Roger Harris (terhi.victor@logonet.com)
Date: Sun Sep 30 2001 - 20:21:57 EEST
Hi
After several months of trouble-free operation, my Linux node has suddenly
started behaving rather strangely. This problem started after there was a
couple of power failures (caused by the Electricity Board). After this, the
PC appeared to reboot OK and everything appears to work except the "routes"
command in the node. Can anyone suggest which files may have been
corrupted? I have checked the "node" binary and several others against
known working copies and they seem to be OK.
Only the "R" (routes) command is affected. Other node commands such as "S",
"U", "N" work OK. If users connect to the node (via Netrom, AX25 or Telnet)
and issue the "R" command, they are immediately disconnected and the
following kernel errors appear in /var/log/messages.
"
Sep 30 17:51:08 corley-uk kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000018
Sep 30 17:51:08 corley-uk kernel: current->tss.cr3 = 00a9d000, %cr3 = 00a9d000
Sep 30 17:51:08 corley-uk kernel: *pde = 00000000
Sep 30 17:51:08 corley-uk kernel: Oops: 0000
Sep 30 17:51:08 corley-uk kernel: CPU: 0
Sep 30 17:51:08 corley-uk kernel:
EIP:
0010:[3c503:__insmod_3c503_O/lib/modules/2.2.16/net/3c503.o_M39888646_V+-120803/84]
Sep 30 17:51:08 corley-uk kernel: EFLAGS: 00010082
Sep 30 17:51:08 corley-uk kernel: eax: 00000000 ebx: 057619f1 ecx:
c03f226a edx: c482b8dc
Sep 30 17:51:08 corley-uk kernel: esi: c3675d80 edi: 0000026a ebp:
c3675de8 esp: c0759f00
Sep 30 17:51:08 corley-uk kernel: ds: 0018 es: 0018 ss: 0018
Sep 30 17:51:08 corley-uk kernel: Process node (pid: 21506, process nr: 64,
stackpage=c0759000)
Sep 30 17:51:08 corley-uk kernel: Stack: c011c0b4 c1404d40 00000400
c03f2000 00000400 c2ad6ac0 c143dcc0 00000000
Sep 30 17:51:08 corley-uk kernel: c3675dac c3675dd4 00000400
c3675dc0 00000000 c1404d40 ffffffea 00000000
Sep 30 17:51:08 corley-uk kernel: c015557d c03f2000 c0759f80
00000000 00000400 00000000 40015000 00001000
Sep 30 17:51:08 corley-uk kernel: Call Trace: [do_mmap_pgoff+972/1120]
[proc_file_read+161/424] [proc_file_read+59/424]
[3c503:__insmod_3c503_O/lib/modules/2.2.16/net/3c503.o_M39888646_V+-93536/84]
[sys_read+178/208] [system_call+52/64]
Sep 30 17:51:08 corley-uk kernel: Code: 8b 40 18 eb 04 89 f6 31 c0 50 8b 86
e0 00 00 00 8b 40 40 50
"
Note the reference to the 3c503 module. I'm not sure of the significance of
this message, but the 3c503 ethernet card appears to be working OK.
I am using SuSe Linux 7.0 with Kernel 2.2.16 and LinuxNode v0.3.0.
Can anyone offer any clues or advice, other than rebuilding the system?
Many thanks
Roger
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This archive was generated by hypermail 2b30 : Sun Sep 30 2001 - 20:42:09 EEST