[PATCH 25/41] score: Use set_current_blocked()

Matt Fleming
2011-08-11T14:02:16Z

From: Matt Fleming <matt.fleming@intel.com>

As described in e6fa16ab ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block
is pending in the shared queue.

Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
---
arch/score/kernel/signal.c | 15 ++++++---------
1 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
index bf9e33e..3ba0298 100644
--- a/arch/score/kernel/signal.c
+++ b/arch/score/kernel/signal.c
@@ -159,10 +159,7 @@ score_rt_sigreturn(struct pt_regs *regs)
goto badframe;

sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);

sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
if (sig < 0)
@@ -273,12 +270,12 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
ret = setup_rt_frame(ka, regs, sig, oldset, info);

if (ret == 0) {
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
+ sigset_t blocked;
+
+ sigorsets(&blocked, &current->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ sigaddset(&blocked, sig);
+ set_current_blocked(&blocked);
}

return ret;
--
1.7.4.4