diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2003-04-25 19:52:30 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2003-04-25 19:52:30 +0000 |
| commit | fdbaa60278d99ae90b16185ad58f959230b3a0fe (patch) | |
| tree | 7c583ce3574489c2254a1a7bc1f059cbbe1c5aa0 | |
| parent | b11c8f53dcbd5263a17f546ae4eb47c0ea5d5987 (diff) | |
Notes
| -rw-r--r-- | sys/alpha/osf1/osf1_signal.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/alpha/osf1/osf1_signal.c b/sys/alpha/osf1/osf1_signal.c index d2ecd39d1e92..3f03ef173718 100644 --- a/sys/alpha/osf1/osf1_signal.c +++ b/sys/alpha/osf1/osf1_signal.c @@ -572,6 +572,7 @@ osf1_sigreturn(struct thread *td, p = td->td_proc; scp = uap->sigcntxp; + mtx_lock(&Giant); if (useracc((caddr_t)scp, sizeof (*scp), VM_PROT_READ) == 0 ) { uprintf("uac fails\n"); uprintf("scp: %p\n", scp); @@ -581,8 +582,11 @@ osf1_sigreturn(struct thread *td, * We grab it all at once for speed. */ if (useracc((caddr_t)scp, sizeof (*scp), VM_PROT_READ) == 0 || - copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) + copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) { + mtx_unlock(&Giant); return (EFAULT); + } + mtx_unlock(&Giant); /* * Restore the user-supplied information. |