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This patch modifies the return value of kprobes exceptions notify handler. 
The kprobes exception notifier returns NOTIFY_STOP on handling
notification.  This patch helps other debuggers to co-exists with the
Kprobes.  Other debuggers registered for exceptions notification must
return NOTIFY_STOP on handling the notification.
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>