diff options
| author | Matt Fleming <matt.fleming@intel.com> | 2011-08-11 14:57:06 +0100 |
|---|---|---|
| committer | Guan Xuetao <gxt@mprc.pku.edu.cn> | 2012-01-10 10:29:41 +0800 |
| commit | 7037bd803e24d4fdaa87f27456e686aafb061277 (patch) | |
| tree | 4ca8c8d236244b2446a9aa8c58c7bafcbb5a0389 /arch/unicore32 | |
| parent | a50e4213e71adc7dde0d514aabd8af7275fee39f (diff) | |
| download | lwn-7037bd803e24d4fdaa87f27456e686aafb061277.tar.gz lwn-7037bd803e24d4fdaa87f27456e686aafb061277.zip | |
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')
| -rw-r--r-- | arch/unicore32/kernel/signal.c | 15 |
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(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->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; } |