signal: fix information leak in copy_siginfo_from_user32

[firefly-linux-kernel-4.4.55.git] / arch / tile / kernel / compat_signal.c

diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index e8c2c04143cda81db9b51018a449b611263ab68d..c667e104a0c251d73f02ce2b812ed09878ca79a0 100644 (file)
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -113,8 +113,6 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
        if (!access_ok(VERIFY_READ, from, sizeof(struct compat_siginfo)))
                return -EFAULT;
 
-       memset(to, 0, sizeof(*to));
-
        err = __get_user(to->si_signo, &from->si_signo);
        err |= __get_user(to->si_errno, &from->si_errno);
        err |= __get_user(to->si_code, &from->si_code);