On Sun, Dec 09, 2007 at 08:50:02AM +0100, Borislav Petkov wrote:
> Hi Andrew,
> Hi Len,
>
> after booting 2.6.24-rc4-mm1 (2.6.24-rc4-190-g94545ba, otoh, boots just
> fine) on my asus laptop, the machine reboots after claiming that
> "Critical temperature reached (255 C)." However, the degrees number
> is kinda hinting at 0xff all-ones field. Will try dump_stack in
> acpi_thermal_critical() to checkout the call path. For now here's the netconsole bootlog:
Here's what i got so far:
[ 50.287939] Pid: 1, comm: swapper Not tainted 2.6.24-rc4-mm1 #14
[ 50.287999] [<c0104b65>] show_trace_log_lvl+0x12/0x25
[ 50.288103] [<c01053e7>] show_trace+0xd/0x10
[ 50.288202] [<c0105a6c>] dump_stack+0x57/0x5f
[ 50.288303] [<c021c991>] acpi_thermal_check+0x150/0x3bb
[ 50.288415] [<c021d4b3>] acpi_thermal_add+0x261/0x2cf
[ 50.288515] [<c0213549>] acpi_device_probe+0x3e/0xdb
[ 50.288615] [<c023f8f5>] driver_probe_device+0xaf/0x12a
[ 50.288717] [<c023fa88>] __driver_attach+0x6c/0xa5
[ 50.288817] [<c023ee5a>] bus_for_each_dev+0x3e/0x60
[ 50.288916] [<c023f77d>] driver_attach+0x14/0x16
[ 50.289015] [<c023f5a6>] bus_add_driver+0xa6/0x1a8
[ 50.289114] [<c023fc53>] driver_register+0x42/0x47
[ 50.289214] [<c02138c2>] acpi_bus_register_driver+0x3a/0x3c
[ 50.289316] [<c044306b>] acpi_thermal_init+0x57/0x76
[ 50.289424] [<c04344a7>] kernel_init+0x138/0x280
[ 50.289525] [<c01047df>] kernel_thread_helper+0x7/0x10
[ 50.289625] =======================
[ 50.289680] ACPI: Critical trip point
[ 50.289736] Critical temperature reached (255 C), shutting down.
so in acpi_thermal_get_temperature() called in acpi_thermal_add() the
tz->temperature thingy is not set properly (printk's added):
[ 50.276607] Old temp: 4294967023
[ 50.281890] Got temp: 255
[ 50.282567] Old temp: 255
[ 50.287882] Got temp: 255
What's also strange is that the tz acpi_thermal is alloc'd with kzalloc and
there's still garbage in it after reading it in acpi_thermal_get_temperature()
for the first time. Debugging continues...
--
Regards/Gruß,
Boris.
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