linux-kernel - 2.6.21.5-rt17 on lenovo t61, some BUG's (lukewarm IQ?)

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Message-Id: <1183000802.4085.5.camel@cmn3.stanford.edu>
Date:	Wed, 27 Jun 2007 20:20:02 -0700
From:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>
To:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>
Cc:	nando@...ma.Stanford.EDU
Subject: 2.6.21.5-rt17 on lenovo t61, some BUG's (lukewarm IQ?)

Hi Ingo, this is happening in a brand new laptop, a Lenovo t61 with a
7700 processor and the Santa Rosa chipset. 

Lukewarm IQ detected in hotplug locking
BUG: at kernel/cpu.c:44 lock_cpu_hotplug()
 [<c0405f88>] dump_trace+0x64/0x105
 [<c0406041>] show_trace_log_lvl+0x18/0x2c
 [<c040664e>] show_trace+0xf/0x11
 [<c04066cf>] dump_stack+0x12/0x14
 [<c0447519>] lock_cpu_hotplug+0x51/0x74
 [<c0426251>] sched_setaffinity+0x13/0xe5
 [<c045bee7>] __synchronize_sched+0x35/0x5a
 [<c04244f1>] arch_reinit_sched_domains+0x13/0x29
 [<c0424543>] sched_power_savings_store+0x3c/0x49
 [<c0554680>] sysdev_class_store+0x1e/0x22
 [<c04b32f7>] sysfs_write_file+0xa3/0xc6
 [<c047beb3>] vfs_write+0xa8/0x154
 [<c047c4ce>] sys_write+0x41/0x67
 [<c0404f7c>] syscall_call+0x7/0xb
 [<b7fb3410>] 0xb7fb3410
 =======================
Lukewarm IQ detected in hotplug locking
BUG: at kernel/cpu.c:44 lock_cpu_hotplug()
 [<c0405f88>] dump_trace+0x64/0x105
 [<c0406041>] show_trace_log_lvl+0x18/0x2c
 [<c040664e>] show_trace+0xf/0x11
 [<c04066cf>] dump_stack+0x12/0x14
 [<c0447519>] lock_cpu_hotplug+0x51/0x74
 [<c0426251>] sched_setaffinity+0x13/0xe5
 [<c045bf09>] __synchronize_sched+0x57/0x5a
 [<c04244f1>] arch_reinit_sched_domains+0x13/0x29
 [<c0424543>] sched_power_savings_store+0x3c/0x49
 [<c0554680>] sysdev_class_store+0x1e/0x22
 [<c04b32f7>] sysfs_write_file+0xa3/0xc6
 [<c047beb3>] vfs_write+0xa8/0x154
 [<c047c4ce>] sys_write+0x41/0x67
 [<c0404f7c>] syscall_call+0x7/0xb
 [<b7fb3410>] 0xb7fb3410
 =======================

I'm attaching the full output of dmesg FYI, let me know if you need
something else to make sense of this. 

[BTW, I tried to unsuccessfully boot rt18 today in one of my CCRMA
machines but the boot hung when trying to start the acpi daemon - this
was on FC6, I'll try to find out more tomorrow. We are seeing some hungs
with rt17 that I have not tried to diagnose yet]

-- Fernando


View attachment "dmesg.1" of type "text/plain" (45507 bytes)