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Subject[PATCH 21/41] OpenRISC: Use set_current_blocked()
Date
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: Jonas Bonn <jonas@southpole.se>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
---
arch/openrisc/kernel/signal.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index b0bdfda..50a5156 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -108,10 +108,7 @@ asmlinkage long _sys_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);

if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
@@ -266,19 +263,17 @@ handle_signal(unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
{
+ sigset_t blocked;
int ret;

ret = setup_rt_frame(sig, ka, info, oldset, regs);
if (ret)
return ret;

- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
+ 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 0;
}
--
1.7.4.4


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