x86/vdso: Mark the vDSO code read-only after init

[firefly-linux-kernel-4.4.55.git] / arch / x86 / um / signal.c

diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index e5f854ce2d72404237067031a09297c8f0d3f424..14fcd01ed99293c162582438b4755a47fff59f43 100644 (file)
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -470,7 +470,7 @@ long sys_sigreturn(void)
        struct sigcontext __user *sc = &frame->sc;
        int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
 
-       if (copy_from_user(&set.sig[0], (void *)sc->oldmask, sizeof(set.sig[0])) ||
+       if (copy_from_user(&set.sig[0], &sc->oldmask, sizeof(set.sig[0])) ||
            copy_from_user(&set.sig[1], frame->extramask, sig_size))
                goto segfault;