Most recent kernel where this bug did not occur: Distribution: Hardware Environment: Software Environment: Problem Description: The Linux kernel ACPI interpreter fails the following AML test when it is compiled into a simulator. So if an OEM BIOS includes this code, Linux would fail. Steps to reproduce: Run interpreter with the .asl demo code attached below.
Created attachment 6215 [details] ASL code to reproduce bug (BitIndex case). The CreateField AML operator declared on a global level is passed with the Named object as a BitIndex parameter. This unexpectedly causes hang.
Created attachment 6216 [details] ASL code to reproduce bug (NumBits case). The CreateField AML operator declared on a global level is passed with the Named object as a NumBits parameter. This unexpectedly causes hang. INTERNAL BUG NUMBER 161
Created attachment 6835 [details] Proposed patch The update was tested by the ASLTS test suite runs (all the test cases) on the following systems: - CYGWIN_NT-5.1 1.5.18(0.132/4/2) 2005-07-02 20:30 i686 unknown unknown Cygwin - Linux 2.6.5-7.191-smp #1 SMP Tue Jun 28 14:58:56 UTC 2005 i686 i686 i386 GNU/Linux for the following (all) modes supported by the ASLTS test suite: - 32-bit norm mode - 64-bit norm mode - 32-bit slack mode - 32-bit slack mode The tests were run (on the systems described above) before update, then the tests were run on those systems after update. Then results of two runs were compared. All is Ok (the relevant error fixed, no new errors).
Released in ACPICA version 20060210
ACPICA 20060707 shipped in Linux-2.6.18 closed.