I've found some odd messages in my system logs:
Warning: dev (03:00) tty->count(1) != #fd's(2) in do_tty_hangup
Warning: dev (03:00) tty->count(1) != #fd's(2) in release_dev
Warning: dev (03:05) tty->count(1) != #fd's(2) in do_tty_hangup
(The system, by the way, has one modem connected which is used for an
incoming SLIP line.)
I also found this oops in my system logs from about ten days ago. The
system has been running fine since.
general protection: 0000
CPU: 0
EIP: 0010:[<001d4eec>]
EFLAGS: 00010246
eax: 00317000 ebx: 00000000 ecx: 00000000 edx: 002c2000
esi: 00000001 edi: 03d5c245 ebp: 08091000 esp: 0141bc28
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process bash (pid: 10877, process nr: 58, stackpage=0141b000)
Stack: 021f0018 001d0018 00119477 00ccdcd8 08091000 00000001 00119374 08091640
03981398 038f9810 03981398 00000000 0010a720 0141bc64 00000002 00000664
001104c0 038f9810 00ccdcd8 08091000 00000001 001103a4 08091640 bffffed4
Call Trace: [<00119477>] [<00119374>] [<0010a720>] [<001104c0>] [<001103a4>] [<0010a720>] [<0012dfeb>]
[<0012f0ed>] [<00140015>] [<001297af>] [<00129a05>] [<00129a2a>] [<00109d72>] [<0010a5bd>]
Code: 84 2d 27 00 c0 7b 20 00 18 c8 27 00 88 a9 22 00 c8 0d 2b 00
Using `/usr/src/linux-2.0.x/System.map' to map addresses to symbols.
>>EIP: 1d4eec <page_hash_table+738/2000>
Trace: 119477 <do_no_page+103/328>
Trace: 119477 <do_no_page+103/328>
Trace: 10a720 <error_code+40/48>
Trace: 1104c0 <do_page_fault+11c/2cc>
Trace: 1104c0 <do_page_fault+11c/2cc>
Trace: 10a720 <error_code+40/48>
Trace: 12dfeb <padzero+2f/3c>
Trace: 12f0ed <load_elf_binary+a95/b30>
Trace: 140015 <ip_options_fragment+45/7c>
Trace: 1297af <search_binary_handler+3f/150>
Trace: 129a05 <do_execve+145/1b8>
Trace: 129a2a <do_execve+16a/1b8>
Trace: 109d72 <sys_execve+32/50>
Trace: 10a5bd <system_call+55/7c>
Code: 1d4eec <page_hash_table+738/2000> testb %ch,0x7bc00027
Code: 1d4ef2 <page_hash_table+73e/2000> andb %al,(%eax)
Code: 1d4ef4 <page_hash_table+740/2000> sbbb %cl,%al
Code: 1d4ef6 <page_hash_table+742/2000> daa
Code: 1d4ef7 <page_hash_table+743/2000> addb %cl,0xc80022a9(%eax)
Code: 1d4efd <page_hash_table+749/2000> orl $0x9000002b,%eax
Code: 1d4f02 <page_hash_table+74e/2000> nop
Code: 1d4f03 <page_hash_table+74f/2000> nop