• R
    recalc_sigpending_tsk fixes · 7bb44ade
    Roland McGrath 提交于
    Steve Hawkes discovered a problem where recalc_sigpending_tsk was called in
    do_sigaction but no signal_wake_up call was made, preventing later signals
    from waking up blocked threads with TIF_SIGPENDING already set.
    
    In fact, the few other calls to recalc_sigpending_tsk outside the signals
    code are also subject to this problem in other race conditions.
    
    This change makes recalc_sigpending_tsk private to the signals code.  It
    changes the outside calls, as well as do_sigaction, to use the new
    recalc_sigpending_and_wake instead.
    Signed-off-by: NRoland McGrath <roland@redhat.com>
    Cc: <Steve.Hawkes@motorola.com>
    Cc: Oleg Nesterov <oleg@tv-sign.ru>
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    7bb44ade
sched.h 52.0 KB