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