http://bugzilla.kernel.org/show_bug.cgi?id=8802
Summary: Jul 24 21:40:41 skogen kernel: ACPI Exception
(processor_throttling-0084): AE_NOT_FOUND, Evaluating
_PTC [20070126]
Product: ACPI
Version: 2.5
KernelVersion: 2.6.23-rc1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: low
Priority: P1
Component: Power-Processor
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: 2.6.22.1
Distribution: Slackware-current
Hardware Environment: 2.4XP, 768Ram, Abit KX7-333 with VIA VT8366 chipset
Software Environment: Slackware, gcc 4.1.2, 2.6.23-rc1
Problem Description:
1, Getting these during boot:
Jul 24 21:40:41 skogen kernel: ACPI Exception (processor_throttling-0084):
AE_NOT_FOUND, Evaluating _PTC [20070126]
Jul 24 21:40:41 skogen kernel: ACPI Exception (processor_throttling-0147):
AE_NOT_FOUND, Evaluating _TSS [20070126]
2, After doing what I wrote below I get in syslog:
BUG: unable to handle kernel NULL pointer dereference at virtual address
00000000
printing eip:
c01cc098
*pdpt = 000000002a912001
*pde = 0000000000000000
Oops: 0000 [#2]
PREEMPT
Modules linked in:
CPU: 0
EIP: 0060:[<c01cc098>] Tainted: P D VLI
EFLAGS: 00010246 (2.6.23-rc1 #1)
EIP is at acpi_processor_throttling_seq_show+0x98/0xdc
eax: 00000000 ebx: effb8100 ecx: 00000000 edx: 00000000
esi: c1764000 edi: 00000000 ebp: ed515040 esp: ef381ef8
ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068
Process cat (pid: 1273, ti=ef380000 task=ed62e000 task.ti=ef380000)
Stack: ed515040 c02f39ad 00000002 00000000 00000000 00000001 00000000 effb8100
ed515040 00000001 00001000 c01615c3 0804f000 ea0d8c80 ed515060 00000000
ed6606b4 ed660680 00000001 c010c12d 00000000 00000000 effb8100 c01614dc
Call Trace:
[<c01615c3>] seq_read+0xe7/0x274
[<c010c12d>] do_page_fault+0x318/0x739
[<c01614dc>] seq_read+0x0/0x274
[<c0172e14>] proc_reg_read+0x83/0x96
[<c0172d91>] proc_reg_read+0x0/0x96
[<c014be5b>] vfs_read+0x7c/0xb2
[<c014c157>] sys_read+0x41/0x67
[<c010252e>] syscall_call+0x7/0xb
=======================
Code: e8 95 50 f9 ff ba 03 3a 2f c0 89 e8 e8 74 4e f9 ff c7 44 24 18 00 00 00
00 eb 42 8b 86 04 03 00 00 8b 54 24 18 3b be d8 02 00 00 <8b> 0c 02 b8 20 00 00
00 ba 2a 00 00 00 89 7c 24 0c c7 44 24 04
EIP: [<c01cc098>] acpi_processor_throttling_seq_show+0x98/0xdc SS:ESP
0068:ef381ef8
Steps to reproduce: cat /proc/acpi/processor/CPU0/throttling (segfaults)
Note: Same as this: http://lkml.org/lkml/2007/6/7/60, it apparently got fixed
in 2.6.22-rc4 but it still is here. It doesn't affect anything other I do.
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