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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2010-02-02 13:44:05 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-02 18:11:22 -0800
commit325fda71d0badc1073dc59f12a948f24ff05796a (patch)
treeb143817aba0e8c0d9b4b689bde32fa893a9fb559 /scripts
parent931e80e4b3263db75c8e34f078d22f11bbabd3a3 (diff)
devmem: check vmalloc address on kmem read/write
Otherwise vmalloc_to_page() will BUG(). This also makes the kmem read/write implementation aligned with mem(4): "References to nonexistent locations cause errors to be returned." Here we return -ENXIO (inspired by Hugh) if no bytes have been transfered to/from user space, otherwise return partial read/write results. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions

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