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authorKyongHo <pullip.cho@samsung.com>2012-05-29 15:06:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:24 -0700
commitdbda591d920b4c7692725b13e3f68ecb251e9080 (patch)
tree15de210e18f06b02cfcd180556a07938a3d2578b /mm/memblock.c
parent26c191788f18129af0eb32a358cdaea0c7479626 (diff)
mm: fix faulty initialization in vmalloc_init()
The transfer of ->flags causes some of the static mapping virtual addresses to be prematurely freed (before the mapping is removed) because VM_LAZY_FREE gets "set" if tmp->flags has VM_IOREMAP set. This might cause subsequent vmalloc/ioremap calls to fail because it might allocate one of the freed virtual address ranges that aren't unmapped. va->flags has different types of flags from tmp->flags. If a region with VM_IOREMAP set is registered with vm_area_add_early(), it will be removed by __purge_vmap_area_lazy(). Fix vmalloc_init() to correctly initialize vmap_area for the given vm_struct. Also initialise va->vm. If it is not set, find_vm_area() for the early vm regions will always fail. Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Cc: "Olav Haugan" <ohaugan@codeaurora.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memblock.c')
0 files changed, 0 insertions, 0 deletions