id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
9159	Guest additions module vboxguest fails to load with 'unresolved symbol vunmap'	Martin Cockerell		"Module vboxguest fails to load due to 'unresolved symbol vunmap' in Linux guest with kernel version 2.4.20 - the vunmap system function is not available at this kernel level.

The guest additions source code contains conditional compilation directives to support various kernel levels (including above/below 2.4.22, the level at which the vmap/vunmap functions become available) but these are incomplete in the source file memobj-r0drv-linux.c.  Specifically, although the use of vmap and vunmap is bypassed in several places, vunmap is still called in function rtR0MemObjNativeFree for memory types RTR0MEMOBJTYPE_RES_VIRT and RTR0MEMOBJTYPE_MAPPING.

Commenting out these vunmap calls and rebuilding allows vboxguest to load and the shared folder functionality to work."	defect	closed	guest additions	VirtualBox 4.0.10	obsolete			Linux	Windows