On Thu, 2009-08-13 at 10:52 +0800, Lin Ming wrote: > From: Lin Ming <ming.m.lin@xxxxxxxxx> > Date: Thu, 13 Aug 2009 10:43:27 +0800 > Subject: [PATCH] ACPICA: fix leak of acpi_os_validate_address > > http://bugzilla.kernel.org/show_bug.cgi?id=13620 > > If the dynamic region is created and added to resource list over and over again, > it has the potential to be a memory leak by growing the list every time. > > This patch fixes the memory leak, as below > > 1) add a new field "count" to struct acpi_res_list. > > When inserting, if the region(addr, len) is already in the resource > list, we just increase "count", otherwise, the region is inserted > with count=1. > > When deleting, the "count" is decreased, if it's decreased to 0, > the region is deleted from the resource list. > > With "count", the region with same address and length can only be > inserted to the resource list once, so prevent potential memory leak. > > 2) add a new function acpi_os_invalidate_address, which is called when > region is deleted. > > Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx> Forgot to mention that it's applied on top of 2.6.31-rc5. Lin Ming -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
