diff options
Diffstat (limited to 'arch/s390/kernel/signal.c')
| -rw-r--r-- | arch/s390/kernel/signal.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index b4fa7c0223e5..5c0ce019a8ae 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -70,21 +70,20 @@ static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs) save_fp_regs(¤t->thread.fp_regs); memcpy(&user_sregs.fpregs, ¤t->thread.fp_regs, sizeof(s390_fp_regs)); - return __copy_to_user(sregs, &user_sregs, sizeof(_sigregs)); + if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs))) + return -EFAULT; + return 0; } -/* Returns positive number on error */ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs) { - int err; _sigregs user_sregs; /* Alwys make any pending restarted system call return -EINTR */ current_thread_info()->restart_block.fn = do_no_restart_syscall; - err = __copy_from_user(&user_sregs, sregs, sizeof(_sigregs)); - if (err) - return err; + if (__copy_from_user(&user_sregs, sregs, sizeof(_sigregs))) + return -EFAULT; /* Use regs->psw.mask instead of PSW_USER_BITS to preserve PER bit. */ regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) | (user_sregs.regs.psw.mask & PSW_MASK_USER); |