http://bugzilla.kernel.org/show_bug.cgi?id=8757
------- Comment #8 from [EMAIL PROTECTED] 2007-08-02 08:59 ------- Well, I have a theory. Two, actually. Thinkpad-acpi, just like almost everything else sysfs and procfs, does not attempt to protect the system against a local DoS. Yet, anyway. But thinkpad-acpi *can*, as most of the ACPI system, DoS the embedded controller. And userland can cause it to happen by doing extremely stupid things, such as while true ; do cat /sys/bus/platform/devices/thinkpad_acpi/* ; done. And the thinkpad EC *has* built-in anti-DoS capabilities. If you are unfortunately enough to trigger it, it will *stop talking to you* for a while (or until a reboot, or whatever. Nobody really did a strong reverse engineering of that). Intel's powertop (google for it) might help you track down if something is bothering thinkpad-acpi too much. It does *not* do any polling by itself yet, so if it shows up in powertop at all, it means userspace is pestering it, and maybe it might be pestering it too much, and thus pestering the EC. There is also another possibility. If *anything* accesses the ACPI EC interface out-of-sync, it can go up in flames. Now, thinkpad-acpi does NOT do that by itself, it calls ACPICA for all EC access, so it should be always synchronized. But if some sort of locking is not exactly right at early resume, it might well be triggering the bug. thinkpad-acpi will cause AML method executions at early resume. Anyway, I wait your reply about the sourceforge patch. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
