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SubjectRe: 2.6.17-mm2
On Sat, 24 Jun 2006 13:20:14 -0400
Dave Jones <davej@redhat.com> wrote:

> On Sat, Jun 24, 2006 at 05:53:44PM +0200, Rafael J. Wysocki wrote:
> > On Saturday 24 June 2006 15:19, Andrew Morton wrote:
> > >
> > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17/2.6.17-mm2/
> >
> > The box seems to work, although I have some "interesting" stuff in dmesg:
> >
> > int3: 0000 [1] PREEMPT
> > last sysfs file: /devices/pci0000:00/0000:00:0a.0/0000:02:00.0/subsystem_device
> > CPU 0
> > Modules linked in: acpi_cpufreq usbserial asus_acpi thermal processor fan button battery ac snd_pcm_oss snd_mixer_oss snd_seq snd_seqd
> > Pid: 4839, comm: modprobe Not tainted 2.6.17-mm2 #4
> > RIP: 0010:[<ffffffff806b0401>] <ffffffff806b0401>{cpufreq_register_driver+1}
> > RSP: 0018:ffff810052c59e40 EFLAGS: 00000292
> > RAX: 00000000ffffffea RBX: ffffffff8832a340 RCX: 00000000ffffffff
> > RDX: ffff8100567e3810 RSI: ffffffff883092cf RDI: ffffffff8832a2a0
> > RBP: ffff810052c59e48 R08: 0000000000000000 R09: 0000000000000001
> > R10: 0000000000000001 R11: 0000000000000001 R12: ffff8100545f4de0
> > R13: ffffffff8832a340 R14: ffffc20000af49b0 R15: ffff8100545f53a0
> > FS: 00002ae4d623db00(0000) GS:ffffffff80689000(0000) knlGS:0000000000000000
> > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > CR2: 000000000051a680 CR3: 0000000054243000 CR4: 00000000000006e0
> > Process modprobe (pid: 4839, threadinfo ffff810052c58000, task ffff8100567e3810)
> > Stack: ffffffff880c808f ffff810052c59f78 ffffffff8024f14a ffffffff8832a390
> > ffffffff8832a358 ffffffff8830e340 ffffc20000af4970 ffffc20000af43b0
> > ffffc20000af4930 ffff8100531a5490
> > Call Trace: [<ffff810052c59f78>]
> >
> > Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
> > RIP <ffffffff806b0401>{cpufreq_register_driver+1} RSP <ffff810052c59e40>
>
> 'something' filled this function with breakpoints.
> Andrew mentioned he dropped the kgdb patches. Any chance something was missed?
>

My guess would be that cpufreq_register_driver() is being called after it
has been unloaded from the kernel.

Do you have CONFIG_CPU_FREQ=y?

Does removal of the __cpuinit from cpufreq_register_driver() fix it (or
move the crash elsewhere)?

Do you get any section mismatch warnings at build-time?

Chandra, those patches seem a bit wobbly.
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