From ffc51be82b17e1c515fdb2dd5b92605798216b30 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 22 Apr 2012 16:34:27 -0400 Subject: [PATCH] um: missing checks of __put_user()/__get_user() return values Signed-off-by: Al Viro --- arch/x86/um/signal.c | 4 ++-- arch/x86/um/syscalls_32.c | 12 ++++++------ 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index 35b283d3df0c..bb0fb03b9f85 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -544,8 +544,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, set->sig[0]); err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate); if (sizeof(*set) == 16) { - __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]); - __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); + err |= __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]); + err |= __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); } else err |= __copy_to_user(&frame->uc.uc_sigmask, set, diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c index 70ca357393b8..b853e8600b9d 100644 --- a/arch/x86/um/syscalls_32.c +++ b/arch/x86/um/syscalls_32.c @@ -44,10 +44,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act, old_sigset_t mask; if (!access_ok(VERIFY_READ, act, sizeof(*act)) || __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); siginitset(&new_ka.sa.sa_mask, mask); } @@ -56,10 +56,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act, if (!ret && oact) { if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); } return ret;