diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-20 10:36:17 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-28 21:46:12 -0500 |
| commit | afd3f96dc34357584763c2dc453192c78a9dbce0 (patch) | |
| tree | a63b5f4c70e9cf947ce7410a2265955849e8b579 | |
| parent | 9dc87c7b5b0a2db407e086f45cf08ca78208cc16 (diff) | |
| download | linux-afd3f96dc34357584763c2dc453192c78a9dbce0.tar.bz2 | |
score: do_sigaltstack() expects a userland pointer...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/score/kernel/signal.c | 7 |
1 files 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__( |