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From: Michael Frank <mhf@linuxmail.org>
To: linux-kernel@vger.kernel.org
Subject: 2.4.22 hangs upon echo > /proc/acpi/alarm
Date: Wed, 12 Nov 2003 20:33:18 +0800	[thread overview]
Message-ID: <200311122033.18729.mhf@linuxmail.org> (raw)

ACPI version is 20031002

Initial backtrace obtained with kdb:

acpi_os_read_port+36
acpi_hw_lowlevel_read+7b
acpi_ev_gpe_detect+94
acpi_ev_sci_xrupt_handler+3c
acpi_irq+d
handle_IRQ_event+31
do_IRQ+72
call_do_IRQ+5
do_softirq+5a
do_IRQ+a1
proc_file_write+9b
sys_write+be
system_call+33

Further stepping shows endless loop around:

acpi_ev_gpe_detect+80
  acpi_hw_lowlevel_read
    acpi_os_read_port
    acpi_ut_get_region_name
    acpi_ut_debug_print 
  acpi_ut_debug_print
  jmp acpi_ev_gpe_detect+80

Debugging is compiled in, but no meesages go to dmesg

How to enable acpi_ut_debug_print output?

Regards
Michael


             reply	other threads:[~2003-11-12 12:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-12 12:33 Michael Frank [this message]
2003-11-13  1:21 ` 2.4.22 hangs upon echo > /proc/acpi/alarm Keith Owens
2003-11-13 18:24   ` Michael Frank
2003-11-14  1:20     ` Keith Owens
     [not found] <Retd.1TR.7@gated-at.bofh.it>
     [not found] ` <RuoB.4pK.25@gated-at.bofh.it>
2003-11-14  0:03   ` Karol Kozimor

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