Messages in this thread |  | | Date | Wed, 29 May 1996 00:51:11 -0400 (EDT) | From | "Mark E. Levitt" <> | Subject | oops with 1.99.8 |
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Hi. I received an oops while using 1.99.8. I was playing an audio CD compiled as a module (mcdx) and I got an oops at a (seemingly) random time.
Now, the oops is in kerneld, so, I'm going to take a wild stab and *guess* what may have happened: I was using workbone to play the CD. I ran workbone, started the CD playing, then quit workbone. Is it possible kerneld thought the CD was not in use and tried to remove it?
Here is the oops and as much info as I could gather following /Documentation/oops-tracing.txt. I wish I could be more helpful, but I'm barely within my level of competence as it is...:)
Oops: Unable to handle kernel paging request at virtual address ec292972 current->tss.cr3 = 00f04000, *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<00113f28>] EFLAGS: 00010202 eax: 40000000 ebx: 2c292972 ecx: 01835000 edx: 60000000 esi: 2c292972 edi: bffffb94 ebp: bffffe34 esp: 00f05f70 ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018 Process kerneld (pid: 10, process nr: 5, stackpage=00f05000) Stack: 00f28414 40001df0 bffffdfc bffffdec 0000000c 00000404 00000000 fffffffc 00000000 00000000 40016541 00000023 00000202 bffffdec 0000002b bffffd6c 00000000 00000000 0010a412 00000000 00000000 40000000 40001df0 bffffb94 Call Trace: [<0010a412>] Code: 8b 33 83 7b 04 00 75 45 83 7b 18 01 75 3f 8b 4b 14 8b 11 89
Here's it run through ksymoops:
Using `/boot/System.map' to map addresses to symbols.
>>EIP: 113f28 <sys_delete_module+ac/10c> Trace: 10a412 <system_call+52/80>
Code: 113f28 <sys_delete_module+ac/10c> movl (%ebx),%esi Code: 113f2a <sys_delete_module+ae/10c> cmpl $0x0,0x4(%ebx) Code: 113f2e <sys_delete_module+b2/10c> jne 113f75 <sys_delete_module+f9/10c> Code: 113f30 <sys_delete_module+b4/10c> cmpl $0x1,0x18(%ebx) Code: 113f34 <sys_delete_module+b8/10c> jne 113f75 <sys_delete_module+f9/10c> Code: 113f36 <sys_delete_module+ba/10c> movl 0x14(%ebx),%ecx Code: 113f39 <sys_delete_module+bd/10c> movl (%ecx),%edx Code: 113f3b <sys_delete_module+bf/10c> movl %eax,(%eax) Code: 113f3d <sys_delete_module+c1/10c> nop Code: 113f3e <sys_delete_module+c2/10c> nop
Here's the output of using gdb to disassemble that function:
(no debugging symbols found)... Dump of assembler code for function sys_delete_module: 0x113e7c <sys_delete_module>: subl $0x40,%esp 0x113e7f <sys_delete_module+3>: pushl %esi 0x113e80 <sys_delete_module+4>: pushl %ebx 0x113e81 <sys_delete_module+5>: movl 0x4c(%esp,1),%edx 0x113e85 <sys_delete_module+9>: movl 0x19d2e8,%eax 0x113e8a <sys_delete_module+14>: cmpw $0x0,0x11a(%eax) 0x113e92 <sys_delete_module+22>: je 0x113ea0 <sys_delete_module+36> 0x113e94 <sys_delete_module+24>: movl $0xffffffff,%eax 0x113e99 <sys_delete_module+29>: popl %ebx 0x113e9a <sys_delete_module+30>: popl %esi 0x113e9b <sys_delete_module+31>: addl $0x40,%esp 0x113e9e <sys_delete_module+34>: ret 0x113e9f <sys_delete_module+35>: nop 0x113ea0 <sys_delete_module+36>: orl $0x100,0x14(%eax) 0x113ea7 <sys_delete_module+43>: testl %edx,%edx 0x113ea9 <sys_delete_module+45>: je 0x113f18 <sys_delete_module+156> 0x113eab <sys_delete_module+47>: leal 0x8(%esp,1),%ebx 0x113eaf <sys_delete_module+51>: pushl %ebx 0x113eb0 <sys_delete_module+52>: pushl %edx 0x113eb1 <sys_delete_module+53>: call 0x1140f4 <get_mod_name> 0x113eb6 <sys_delete_module+58>: addl $0x8,%esp 0x113eb9 <sys_delete_module+61>: testl %eax,%eax 0x113ebb <sys_delete_module+63>: jne 0x113f81 <sys_delete_module+261> 0x113ec1 <sys_delete_module+69>: pushl %ebx 0x113ec2 <sys_delete_module+70>: call 0x114124 <find_module> 0x113ec7 <sys_delete_module+75>: movl %eax,%ebx 0x113ec9 <sys_delete_module+77>: addl $0x4,%esp 0x113ecc <sys_delete_module+80>: testl %ebx,%ebx 0x113ece <sys_delete_module+82>: jne 0x113edc <sys_delete_module+96> 0x113ed0 <sys_delete_module+84>: movl $0xfffffffe,%eax 0x113ed5 <sys_delete_module+89>: popl %ebx 0x113ed6 <sys_delete_module+90>: popl %esi 0x113ed7 <sys_delete_module+91>: addl $0x40,%esp 0x113eda <sys_delete_module+94>: ret 0x113edb <sys_delete_module+95>: nop 0x113edc <sys_delete_module+96>: cmpl $0x0,0x4(%ebx) 0x113ee0 <sys_delete_module+100>: jne 0x113eed <sys_delete_module+113> 0x113ee2 <sys_delete_module+102>: movl 0x14(%ebx),%eax 0x113ee5 <sys_delete_module+105>: testl $0x9fffffff,(%eax) 0x113eeb <sys_delete_module+111>: je 0x113ef8 <sys_delete_module+124> 0x113eed <sys_delete_module+113>: movl $0xfffffff0,%eax 0x113ef2 <sys_delete_module+118>: popl %ebx 0x113ef3 <sys_delete_module+119>: popl %esi 0x113ef4 <sys_delete_module+120>: addl $0x40,%esp 0x113ef7 <sys_delete_module+123>: ret 0x113ef8 <sys_delete_module+124>: movl $0x0,(%eax) 0x113efe <sys_delete_module+130>: cmpl $0x1,0x18(%ebx) 0x113f02 <sys_delete_module+134>: jne 0x113f09 <sys_delete_module+141> 0x113f04 <sys_delete_module+136>: movl 0x1c(%ebx),%eax 0x113f07 <sys_delete_module+139>: call *%eax 0x113f09 <sys_delete_module+141>: movl $0x2,0x18(%ebx) 0x113f10 <sys_delete_module+148>: call 0x1141b0 <free_modules> 0x113f15 <sys_delete_module+153>: jmp 0x113f7f <sys_delete_module+259> 0x113f17 <sys_delete_module+155>: nop 0x113f18 <sys_delete_module+156>: movl 0x186e3c,%ebx 0x113f1e <sys_delete_module+162>: cmpl $0x193420,%ebx 0x113f24 <sys_delete_module+168>: je 0x113f7f <sys_delete_module+259> 0x113f26 <sys_delete_module+170>: nop 0x113f27 <sys_delete_module+171>: nop 0x113f28 <sys_delete_module+172>: movl (%ebx),%esi 0x113f2a <sys_delete_module+174>: cmpl $0x0,0x4(%ebx) 0x113f2e <sys_delete_module+178>: jne 0x113f75 <sys_delete_module+249> 0x113f30 <sys_delete_module+180>: cmpl $0x1,0x18(%ebx) 0x113f34 <sys_delete_module+184>: jne 0x113f75 <sys_delete_module+249> 0x113f36 <sys_delete_module+186>: movl 0x14(%ebx),%ecx 0x113f39 <sys_delete_module+189>: movl (%ecx),%edx 0x113f3b <sys_delete_module+191>: movl %edx,%eax 0x113f3d <sys_delete_module+193>: andl $0xdfffffff,%eax 0x113f42 <sys_delete_module+198>: cmpl $0x40000000,%eax 0x113f47 <sys_delete_module+203>: jne 0x113f75 <sys_delete_module+249> 0x113f49 <sys_delete_module+205>: testl $0x20000000,%edx 0x113f4f <sys_delete_module+211>: je 0x113f5c <sys_delete_module+224> 0x113f51 <sys_delete_module+213>: movl $0x40000000,(%ecx) 0x113f57 <sys_delete_module+219>: jmp 0x113f75 <sys_delete_module+249> 0x113f59 <sys_delete_module+221>: nop 0x113f5a <sys_delete_module+222>: nop 0x113f5b <sys_delete_module+223>: nop 0x113f5c <sys_delete_module+224>: andl $0x9fffffff,%edx 0x113f62 <sys_delete_module+230>: movl %edx,(%ecx) 0x113f64 <sys_delete_module+232>: movl 0x1c(%ebx),%eax 0x113f67 <sys_delete_module+235>: call *%eax 0x113f69 <sys_delete_module+237>: movl $0x2,0x18(%ebx) 0x113f70 <sys_delete_module+244>: call 0x1141b0 <free_modules> 0x113f75 <sys_delete_module+249>: movl %esi,%ebx 0x113f77 <sys_delete_module+251>: cmpl $0x193420,%ebx 0x113f7d <sys_delete_module+257>: jne 0x113f28 <sys_delete_module+172> 0x113f7f <sys_delete_module+259>: xorl %eax,%eax 0x113f81 <sys_delete_module+261>: popl %ebx 0x113f82 <sys_delete_module+262>: popl %esi 0x113f83 <sys_delete_module+263>: addl $0x40,%esp 0x113f86 <sys_delete_module+266>: ret 0x113f87 <sys_delete_module+267>: nop End of assembler dump.
Finally, here's the relevent portion of the System.map
0011390c T init_modules 0011390c t gcc2_compiled. 0011394c T sys_create_module 00113a78 T sys_init_module 00113e7c T sys_delete_module 00113f88 T sys_get_kernel_syms 001140f4 t get_mod_name 00114124 t find_module 00114164 t drop_refs 001141b0 t free_modules 00114248 T get_module_list 001143f8 T get_ksyms_list 001144ec T register_symtab_from 00114724 T force_sig 00114724 t gcc2_compiled. 00114770 T send_sig
Sorry if any of this is irrelevent/useless/redundant.
Peace.
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Mark E. Levitt Department of Speech Communication, Syracuse University E-mail: melevitt@syr.edu Home Page: http://web.syr.edu/~melevitt
PGP fingerprint = B8 A3 AA A6 0F 83 9A BE F2 7A 19 F9 15 79 FE A4 Public key available from http://web.syr.edu/~melevitt/pgpkey.html ____________________________________________________________________
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