Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

Pull first series of signal handling cleanups from Al Viro:
 "This is just the first part of the queue (about a half of it);
  assorted fixes all over the place in signal handling.

  This one ends with all sigsuspend() implementations switched to
  generic one (->saved_sigmask-based).

  With this, a bunch of assorted old buglets are fixed and most of the
  missing bits of NOTIFY_RESUME hookup are in place.  Two more fixes sit
  in arm and um trees respectively, and there's a couple of broken ones
  that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME
  only on one of two codepaths; fixes for that will happen in the next
  series"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits)
  unicore32: if there's no handler we need to restore sigmask, syscall or no syscall
  xtensa: add handling of TIF_NOTIFY_RESUME
  microblaze: drop 'oldset' argument of do_notify_resume()
  microblaze: handle TIF_NOTIFY_RESUME
  score: add handling of NOTIFY_RESUME to do_notify_resume()
  m68k: add TIF_NOTIFY_RESUME and handle it.
  sparc: kill ancient comment in sparc_sigaction()
  h8300: missing checks of __get_user()/__put_user() return values
  frv: missing checks of __get_user()/__put_user() return values
  cris: missing checks of __get_user()/__put_user() return values
  powerpc: missing checks of __get_user()/__put_user() return values
  sh: missing checks of __get_user()/__put_user() return values
  sparc: missing checks of __get_user()/__put_user() return values
  avr32: struct old_sigaction is never used
  m32r: struct old_sigaction is never used
  xtensa: xtensa_sigaction doesn't exist
  alpha: tidy signal delivery up
  score: don't open-code force_sigsegv()
  cris: don't open-code force_sigsegv()
  blackfin: don't open-code force_sigsegv()
  ...

1 files changed, 6 insertions, 12 deletions

diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c
index 911b549a6df5..7754df6ef7d4 100644
--- a/arch/unicore32/kernel/signal.c
+++ b/arch/unicore32/kernel/signal.c
@@ -370,10 +370,7 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
         /*
          * Block the signal if we were successful.
          */
-        sigorsets(&blocked, &tsk->blocked, &ka->sa.sa_mask);
-        if (!(ka->sa.sa_flags & SA_NODEFER))
-                sigaddset(&blocked, sig);
-        set_current_blocked(&blocked);
+        block_sigmask(ka, sig);
 
         return 0;
 }
@@ -450,15 +447,12 @@ static void do_signal(struct pt_regs *regs, int syscall)
                     regs->UCreg_00 == -ERESTARTNOINTR) {
                         setup_syscall_restart(regs);
                 }
-
-                /* If there's no signal to deliver, we just put the saved
-                 * sigmask back.
-                 */
-                if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-                        clear_thread_flag(TIF_RESTORE_SIGMASK);
-                        sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-                }
         }
+        /* If there's no signal to deliver, we just put the saved
+         * sigmask back.
+         */
+        if (test_and_clear_thread_flag(TIF_RESTORE_SIGMASK))
+                set_current_blocked(&current->saved_sigmask);
 }
 
 asmlinkage void do_notify_resume(struct pt_regs *regs,