Oops when loading ac

DISCUSSION Pierre Ossman 2 participants 3 messages Aug 24, 2004 – Aug 26, 2004 1 message not in the archive ACPI

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Pierre Ossman

author

2004-08-24 18:19 UTC #0 lore raw

Somewhere between 2.6.7 + acpi_20040715 and 2.6.8.1 (still present in 2.6.9-rc1) there appeared a bug that causes the ac module to crash when loading. I had no problems with the ac module before this. Any ideas on what has been changed and what to do about it?

Rgds
Pierre

From dmesg:

Unable to handle kernel paging request at virtual address c0452440

printing eip:
c0233162
*pde = 00488027
*pte = 00452000

Oops: 0002 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: ac radeon ipv6 xfs
CPU:    0
EIP:    0060:[<c0233162>]    Not tainted VLI
EFLAGS: 00010246   (2.6.9-rc1)

EIP is at acpi_bus_register_driver+0xd4/0x169
eax: c0452440 ebx: e0903b40 ecx: e090336b edx: ffffffed
esi: dd468000 edi: e0903c80 ebp: c03cec60 esp: dd469f84
ds: 007b es: 007b ss: 0068
Process insmod (pid: 573, threadinfo=dd468000 task=dd4909f0)

Stack: c03ceca0 e0905031 e0903b40 c014c54b c0469884 00000001 e0903c80 4003edfa
      0001120e bffffeec 00000004 40010008 00000000 00000000 dd468000 
c0106b79
      40010008 0002edf2 0807a008 00000000 00000000 bfffcef8 00000080 
0000007b
Call Trace:
[<e0905031>] init_module+0x31/0x52 [ac]
[<c014c54b>] sys_init_module+0x1ab/0x370
[<c0106b79>] sysenter_past_esp+0x52/0x71
Code: 00 00 00 a1 6c 75 3d c0 c7 05 f8 74 3d c0 7c f2 39 c0 c7 05 fc 74 3d c0 bd 01 00 00 89 1d 6c 75 3d c0 c7 03 68 75 3d c0 89 43 04 <89> 18 81 3d e8 74 3d c0 3c 4b 24 1d 74 1c 68 e8 74 3d c0 68 bf

<6>note: insmod[573] exited with preempt_count 1
drivers/acpi/scan.c:445: spin_lock(drivers/acpi/scan.c:c03d74e8) already locked by drivers/acpi/scan.c/445

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Len Brown

2004-08-24 20:22 UTC #2 lore raw

no idea.
does compiling the module static or disabling PREEMPT or disabling DEBUG_PAGEALLOC have any effect?

Quoted 45 lines · Pierre Ossman

Somewhere between 2.6.7 + acpi_20040715 and 2.6.8.1 (still present in 2.6.9-rc1) there appeared a bug that causes the ac module to crash when loading. I had no problems with the ac module before this. Any ideas on what has been changed and what to do about it?
Rgds
Pierre
From dmesg:
Unable to handle kernel paging request at virtual address c0452440
 printing eip:
c0233162
*pde = 00488027
*pte = 00452000
Oops: 0002 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: ac radeon ipv6 xfs
CPU:    0
EIP:    0060:[<c0233162>]    Not tainted VLI
EFLAGS: 00010246   (2.6.9-rc1)
EIP is at acpi_bus_register_driver+0xd4/0x169
eax: c0452440 ebx: e0903b40 ecx: e090336b edx: ffffffed
esi: dd468000 edi: e0903c80 ebp: c03cec60 esp: dd469f84
ds: 007b es: 007b ss: 0068
Process insmod (pid: 573, threadinfo=dd468000 task=dd4909f0)
Stack: c03ceca0 e0905031 e0903b40 c014c54b c0469884 00000001 e0903c80 
4003edfa
       0001120e bffffeec 00000004 40010008 00000000 00000000 dd468000 
c0106b79
       40010008 0002edf2 0807a008 00000000 00000000 bfffcef8 00000080 
0000007b
Call Trace:
 [<e0905031>] init_module+0x31/0x52 [ac]
 [<c014c54b>] sys_init_module+0x1ab/0x370
 [<c0106b79>] sysenter_past_esp+0x52/0x71
Code: 00 00 00 a1 6c 75 3d c0 c7 05 f8 74 3d c0 7c f2 39 c0 c7 05 fc 74 
3d c0 bd 01 00 00 89 1d 6c 75 3d c0 c7 03 68 75 3d c0 89 43 04 <89> 18 81 3d e8 74 3d c0 3c 4b 24 1d 74 1c 68 e8 74 3d c0 68 bf
<6>note: insmod[573] exited with preempt_count 1
drivers/acpi/scan.c:445: spin_lock(drivers/acpi/scan.c:c03d74e8) already locked by drivers/acpi/scan.c/445

Quoted 9 lines

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Pierre Ossman

author

2004-08-26 07:09 UTC #3 lore raw

I've done some testing now and the bug only appears with DEBUG_PAGEALLOC. PREEMPT has no influence.

Quoted 4 lines · Len Brown

no idea.
does compiling the module static or disabling PREEMPT or disabling DEBUG_PAGEALLOC have any effect?

Quoted 55 lines

Quoted 49 lines · Pierre Ossman
Somewhere between 2.6.7 + acpi_20040715 and 2.6.8.1 (still present in 2.6.9-rc1) there appeared a bug that causes the ac module to crash when loading. I had no problems with the ac module before this. Any ideas on what has been changed and what to do about it?
Rgds
Pierre
From dmesg:
Unable to handle kernel paging request at virtual address c0452440
printing eip:
c0233162
*pde = 00488027
*pte = 00452000
Oops: 0002 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: ac radeon ipv6 xfs
CPU:    0
EIP:    0060:[<c0233162>]    Not tainted VLI
EFLAGS: 00010246   (2.6.9-rc1)
EIP is at acpi_bus_register_driver+0xd4/0x169
eax: c0452440 ebx: e0903b40 ecx: e090336b edx: ffffffed
esi: dd468000 edi: e0903c80 ebp: c03cec60 esp: dd469f84
ds: 007b es: 007b ss: 0068
Process insmod (pid: 573, threadinfo=dd468000 task=dd4909f0)
Stack: c03ceca0 e0905031 e0903b40 c014c54b c0469884 00000001 e0903c80 4003edfa
      0001120e bffffeec 00000004 40010008 00000000 00000000 dd468000 
c0106b79
      40010008 0002edf2 0807a008 00000000 00000000 bfffcef8 00000080 
0000007b
Call Trace:
[<e0905031>] init_module+0x31/0x52 [ac]
[<c014c54b>] sys_init_module+0x1ab/0x370
[<c0106b79>] sysenter_past_esp+0x52/0x71
Code: 00 00 00 a1 6c 75 3d c0 c7 05 f8 74 3d c0 7c f2 39 c0 c7 05 fc 74 3d c0 bd 01 00 00 89 1d 6c 75 3d c0 c7 03 68 75 3d c0 89 43 04 <89> 18 81 3d e8 74 3d c0 3c 4b 24 1d 74 1c 68 e8 74 3d c0 68 bf
<6>note: insmod[573] exited with preempt_count 1
drivers/acpi/scan.c:445: spin_lock(drivers/acpi/scan.c:c03d74e8) already locked by drivers/acpi/scan.c/445
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SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift.
http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285
_______________________________________________
Acpi-devel mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/acpi-devel