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SubjectRe: /dev/cpu/*/(cpuid, msr) unhappy as modules - OOPS!
Date
OK, I've just tried repeating this experiment on 2.2.18 (no devfs) and
it oopsed this time, so there's obviously something else going on
here.

$ ksymoops -m /boot/System.map-2.2.18 < oops2.txt
ksymoops 2.3.4 on i586 2.2.18. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.2.18/ (default)
-m /boot/System.map-2.2.18 (specified)

Warning (compare_maps): ksyms_base symbol module_list_R__ver_module_list not found in System.map. Ignoring ksyms_base entry
Dec 14 22:03:53 wellhouse kernel: Unable to handle kernel paging request at virtual address c888a27c
Dec 14 22:03:53 wellhouse kernel: current->tss.cr3 = 03003000, %%cr3 = 03003000
Dec 14 22:03:53 wellhouse kernel: *pde = 013f2063
Dec 14 22:03:53 wellhouse kernel: Oops: 0000
Dec 14 22:03:53 wellhouse kernel: CPU: 0
Dec 14 22:03:53 wellhouse kernel: EIP: 0010:[chrdev_open+56/88]
Dec 14 22:03:53 wellhouse kernel: EFLAGS: 00010286
Dec 14 22:03:53 wellhouse kernel: eax: c888a260 ebx: ffffffed ecx: 00000000 edx: 000000cb
Dec 14 22:03:53 wellhouse kernel: esi: c25ba8c0 edi: c18c2288 ebp: c3c50ca0 esp: c0ef9f4c
Dec 14 22:03:53 wellhouse kernel: ds: 0018 es: 0018 ss: 0018
Dec 14 22:03:53 wellhouse kernel: Process cat (pid: 7021, process nr: 61, stackpage=c0ef9000)
Dec 14 22:03:53 wellhouse kernel: Stack: c18c2288 00008000 00000003 400e88b3 bffffa6c c012497c c18c2288 c25ba8c0
Dec 14 22:03:53 wellhouse kernel: 00000000 c01248d5 00000003 c398a000 400e88b3 bffffa6c 00000000 c16b427c
Dec 14 22:03:53 wellhouse kernel: 00000400 c0124b6f c398a000 00008000 00000000 c0124b56 c0ef8000 40013ed0
Dec 14 22:03:53 wellhouse kernel: Call Trace: [filp_open+184/264] [filp_open+17/264] [sys_open+63/160] [sys_open+38/160] [error_code+45/64] [system_call+52/64]
Dec 14 22:03:53 wellhouse kernel: Code: 8b 40 1c 31 db 85 c0 74 0c 83 c4 f8 56 57 ff d0 89 c3 83 c4
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 8b 40 1c mov 0x1c(%eax),%eax
Code; 00000003 Before first symbol
3: 31 db xor %ebx,%ebx
Code; 00000005 Before first symbol
5: 85 c0 test %eax,%eax
Code; 00000007 Before first symbol
7: 74 0c je 15 <_EIP+0x15> 00000015 Before first symbol
Code; 00000009 Before first symbol
9: 83 c4 f8 add $0xfffffff8,%esp
Code; 0000000c Before first symbol
c: 56 push %esi
Code; 0000000d Before first symbol
d: 57 push %edi
Code; 0000000e Before first symbol
e: ff d0 call *%eax
Code; 00000010 Before first symbol
10: 89 c3 mov %eax,%ebx
Code; 00000012 Before first symbol
12: 83 c4 00 add $0x0,%esp


1 warning issued. Results may not be reliable.

Chris
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