arm: missing checks of __get_user()/__put_user() return values

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index d68d1b6946809831458d03d8a020ea32f571c62f..d554025dbcbc237f644532c110ba52b2e2d1ba81 100644 (file)
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -91,10 +91,10 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
                old_sigset_t mask;
                if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
                    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
-                   __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+                   __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+                   __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+                   __get_user(mask, &act->sa_mask))
                        return -EFAULT;
-               __get_user(new_ka.sa.sa_flags, &act->sa_flags);
-               __get_user(mask, &act->sa_mask);
                siginitset(&new_ka.sa.sa_mask, mask);
        }
 
@@ -103,10 +103,10 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
        if (!ret && oact) {
                if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
                    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
-                   __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+                   __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+                   __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+                   __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
                        return -EFAULT;
-               __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-               __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
        }
 
        return ret;