CPU HOTPLUG BUG 2.6.18-rc4

From: Lukas Hejtmanek
Date: Wed Aug 09 2006 - 14:46:25 EST


just tested CPU HOTPLUG using 2.6.18-rc4 kernel on Intel Core 2 Duo on DP965LT
Intel board. I'm running in X86_64 mode, SMP, kernel preemtion, bkl preemt.

After booting I got this (non fatal) dump:
Lukewarm IQ detected in hotplug locking
BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug()

Call Trace:
[<ffffffff802a0708>] lock_cpu_hotplug+0x51/0x76
[<ffffffff80298917>] __create_workqueue+0x57/0x157
[<ffffffff803fc52b>] cpufreq_governor_dbs+0xbb/0x330
[<ffffffff803f9f98>] __cpufreq_governor+0x98/0x19f
[<ffffffff803fa72d>] __cpufreq_set_policy+0xfd/0x142
[<ffffffff803faf43>] store_scaling_governor+0x183/0x1e2
[<ffffffff803faabc>] handle_update+0x0/0x14
[<ffffffff8020f086>] __alloc_pages+0x76/0x2d0
[<ffffffff8027bef2>] store+0x44/0x5b
[<ffffffff802e0673>] sysfs_write_file+0xb8/0xe3
[<ffffffff8021674d>] vfs_write+0xad/0x159
[<ffffffff80216fe7>] sys_write+0x45/0x7e
[<ffffffff802617ce>] system_call+0x7e/0x83

Lukáš Hejtmánek
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