osf_sigstack(): switch to put_user()

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

osf_sigstack(): switch to put_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8d2fd30e · Al Viro · 1cc6c463 · 8d2fd30e
Commit 8d2fd30e authored May 27, 2017 by Al Viro
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Showing with 2 additions and 3 deletions

arch/alpha/kernel/osf_sys.c arch/alpha/kernel/osf_sys.c +2 -3

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--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -713,9 +713,8 @@ SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
 	if (uoss) {
 		error = -EFAULT;
-		if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss))
+		if (put_user(oss_sp, &uoss->ss_sp) ||
-		    || __put_user(oss_sp, &uoss->ss_sp)
+		    put_user(oss_os, &uoss->ss_onstack))
-		    || __put_user(oss_os, &uoss->ss_onstack))
 			goto out;
 	}