From afd3f96dc34357584763c2dc453192c78a9dbce0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 20 Nov 2012 10:36:17 -0500 Subject: [PATCH] score: do_sigaltstack() expects a userland pointer... Signed-off-by: Al Viro --- arch/score/kernel/signal.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c index c268bbf8b410..02353bde92d8 100644 --- a/arch/score/kernel/signal.c +++ b/arch/score/kernel/signal.c @@ -148,7 +148,6 @@ score_rt_sigreturn(struct pt_regs *regs) { struct rt_sigframe __user *frame; sigset_t set; - stack_t st; int sig; /* Always make any pending restarted system calls return -EINTR */ @@ -168,12 +167,10 @@ score_rt_sigreturn(struct pt_regs *regs) else if (sig) force_sig(sig, current); - if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st))) - goto badframe; - /* It is more difficult to avoid calling this function than to call it and ignore errors. */ - do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]); + if (do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs->regs[0]) == -EFAULT) + goto badframe; regs->is_syscall = 0; __asm__ __volatile__( -- 2.20.1