h8300: don't change blocked signals' mask if setting frame up fails

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index cd63f5a6c8fe9d3ad6a77f05d63a12d7cecd612a..78e9b65df93e4783365a85b86f13bda43c30135d 100644 (file)
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -304,7 +304,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
        return (void *)((usp - frame_size) & -8UL);
 }
 
-static void setup_frame (int sig, struct k_sigaction *ka,
+static int setup_frame (int sig, struct k_sigaction *ka,
                         sigset_t *set, struct pt_regs *regs)
 {
        struct sigframe *frame;
@@ -365,13 +365,14 @@ static void setup_frame (int sig, struct k_sigaction *ka,
        regs->er1 = (unsigned long)&(frame->sc);
        regs->er5 = current->mm->start_data;    /* GOT base */
 
-       return;
+       return 0;
 
 give_sigsegv:
        force_sigsegv(sig, current);
+       return -EFAULT;
 }
 
-static void setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
+static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
                            sigset_t *set, struct pt_regs *regs)
 {
        struct rt_sigframe *frame;
@@ -440,10 +441,11 @@ static void setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
        regs->er2 = (unsigned long)&frame->uc;
        regs->er5 = current->mm->start_data;    /* GOT base */
 
-       return;
+       return 0;
 
 give_sigsegv:
        force_sigsegv(sig, current);
+       return -EFAULT;
 }
 
 /*
@@ -453,6 +455,7 @@ static void
 handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
              sigset_t *oldset, struct pt_regs * regs)
 {
+       int ret;
        /* are we from a system call? */
        if (regs->orig_er0 >= 0) {
                switch (regs->er0) {
@@ -475,11 +478,12 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 
        /* set up the stack frame */
        if (ka->sa.sa_flags & SA_SIGINFO)
-               setup_rt_frame(sig, ka, info, oldset, regs);
+               ret = setup_rt_frame(sig, ka, info, oldset, regs);
        else
-               setup_frame(sig, ka, oldset, regs);
+               ret = setup_frame(sig, ka, oldset, regs);
 
-       block_sigmask(ka, sig);
+       if (!ret)
+               block_sigmask(ka, sig);
 }
 
 /*