linux-kernel - Re: acpi_ex_system_memory_space

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Message-ID: <20090814075357.GA3545@localdomain.by>
Date:	Fri, 14 Aug 2009 10:53:57 +0300
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	Len Brown <lenb@...nel.org>, "Brown, Len" <len.brown@...el.com>,
	"Moore, Robert" <robert.moore@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: acpi_ex_system_memory_space_handler oops

> Could you please help to locate the line of code that causes oops, as
> below?
> 

$ addr2line -e ./vmlinux -i -f c12a77ca
acpi_ex_system_memory_space_handler
/media/dev/kernel/kernel-git/linux-2.6/drivers/acpi/acpica/exregion.c:129

exregion.c:129
        [...] 
        /*
         * Does the request fit into the cached memory mapping?
         * Is 1) Address below the current mapping? OR         
         *    2) Address beyond the current mapping?  
         */
        if ((address < mem_info->mapped_physical_address) ||
            (((acpi_integer) address + length) > ((acpi_integer)
                                                  mem_info->
                                                  mapped_physical_address +   
                                                  mem_info->mapped_length))) {
                /*
                 * The request cannot be resolved by the current memory mapping;
                 * Delete the existing mapping and create a new one.            
                 */
                if (mem_info->mapped_length) {
        [...]
             

        Sergey

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