[PATCH] UML: tty locking
Ensure current->signal->tty doesn't get freed during log_exec(). Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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