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authorIan Abbott <abbotti@mev.co.uk>2009-02-24 17:22:59 (GMT)
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-24 23:38:25 (GMT)
commit6da2d377bba06c29d0bc41c8dee014164dec82a7 (patch)
tree46bdf19836227b27c4548431ec7cea5eeb2a8a08 /firmware
parent1bafeb378e915f39b1bf44ee0871823d6f402ea5 (diff)
downloadlinux-6da2d377bba06c29d0bc41c8dee014164dec82a7.tar.xz
UIO: Take offset into account when determining number of pages that can be mapped
If a UIO memory region does not start on a page boundary but straddles one, the number of actual pages that overlap the memory region may be calculated incorrectly because the offset isn't taken into account. If userspace sets the mmap length to offset+size, it may fail with -EINVAL if UIO thinks it's trying to allocate too many pages. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Cc: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions