Bug 200121

Summary: BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug()
Product: [Fedora] Fedora Reporter: sangu <sangu.fedora>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-07-26 04:21:17 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
dmesg file none

Description sangu 2006-07-25 16:18:35 UTC 
Description of problem:
$dmesg
[...]
Lukewarm IQ detected in hotplug locking
BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() (Tainted: P     )
 [<c04051ea>] show_trace_log_lvl+0x54/0xfd
 [<c04057a6>] show_trace+0xd/0x10
 [<c04058bf>] dump_stack+0x19/0x1b
 [<c043f23f>] lock_cpu_hotplug+0x49/0x6f
 [<c05a22f8>] __cpufreq_driver_target+0x15/0x6d
 [<c05a3258>] cpufreq_governor_userspace+0x199/0x1cc
 [<c05a1d9f>] __cpufreq_governor+0x57/0xd8
 [<c05a1fb7>] __cpufreq_set_policy+0x197/0x1a9
 [<c05a2165>] store_scaling_governor+0x12d/0x15b
 [<c05a17f0>] store+0x37/0x48
 [<c04a8cd4>] sysfs_write_file+0xab/0xd1
 [<c0471f33>] vfs_write+0xab/0x157
 [<c0472578>] sys_write+0x3b/0x60
 [<c0403faf>] syscall_call+0x7/0xb
Lukewarm IQ detected in hotplug locking
BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() (Tainted: P     )
 [<c04051ea>] show_trace_log_lvl+0x54/0xfd
 [<c04057a6>] show_trace+0xd/0x10
 [<c04058bf>] dump_stack+0x19/0x1b
 [<c043f23f>] lock_cpu_hotplug+0x49/0x6f
 [<c05a22f8>] __cpufreq_driver_target+0x15/0x6d
 [<c05a3258>] cpufreq_governor_userspace+0x199/0x1cc
 [<c05a1d9f>] __cpufreq_governor+0x57/0xd8
 [<c05a1fb7>] __cpufreq_set_policy+0x197/0x1a9
 [<c05a2165>] store_scaling_governor+0x12d/0x15b
 [<c05a17f0>] store+0x37/0x48
 [<c04a8cd4>] sysfs_write_file+0xab/0xd1
 [<c0471f33>] vfs_write+0xab/0x157
 [<c0472578>] sys_write+0x3b/0x60
 [<c0403faf>] syscall_call+0x7/0xb


Version-Release number of selected component (if applicable):
2.6.17-1.2445.fc6

How reproducible:
always

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:
$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 43
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
stepping        : 1
cpu MHz         : 1000.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
]$ uname -a
Linux localhost.localdomain 2.6.17-1.2445.fc6 #1 SMP Mon Jul 24 22:43:31 EDT
2006 i686 athlon i386 GNU/Linux
Comment 1 sangu 2006-07-25 16:18:35 UTC 
Created attachment 133002 [details]
dmesg file
Comment 4 Dave Jones 2006-07-26 04:21:17 UTC 

*** This bug has been marked as a duplicate of 197803 ***