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authorMatt Fleming <matt.fleming@intel.com>2011-08-11 14:57:06 +0100
committerGuan Xuetao <gxt@mprc.pku.edu.cn>2012-01-10 10:29:41 +0800
commit7037bd803e24d4fdaa87f27456e686aafb061277 (patch)
tree4ca8c8d236244b2446a9aa8c58c7bafcbb5a0389 /arch/unicore32/kernel/signal.c
parenta50e4213e71adc7dde0d514aabd8af7275fee39f (diff)
downloadlinux-7037bd803e24d4fdaa87f27456e686aafb061277.tar.gz
unicore32: Use set_current_blocked()
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: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Diffstat (limited to 'arch/unicore32/kernel/signal.c')
-rw-r--r--arch/unicore32/kernel/signal.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c
index b163fca56789..911b549a6df5 100644
--- a/arch/unicore32/kernel/signal.c
+++ b/arch/unicore32/kernel/signal.c
@@ -63,10 +63,7 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)
err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
if (err == 0) {
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);
}
err |= __get_user(regs->UCreg_00, &sf->uc.uc_mcontext.regs.UCreg_00);
@@ -321,6 +318,7 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
{
struct thread_info *thread = current_thread_info();
struct task_struct *tsk = current;
+ sigset_t blocked;
int usig = sig;
int ret;
@@ -372,13 +370,10 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
/*
* Block the signal if we were successful.
*/
- spin_lock_irq(&tsk->sighand->siglock);
- sigorsets(&tsk->blocked, &tsk->blocked,
- &ka->sa.sa_mask);
+ sigorsets(&blocked, &tsk->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&tsk->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(&tsk->sighand->siglock);
+ sigaddset(&blocked, sig);
+ set_current_blocked(&blocked);
return 0;
}