diff options
| -rw-r--r-- | include/linux/compat.h | 4 | ||||
| -rw-r--r-- | kernel/signal.c | 11 |
2 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h index 9e40be522793..aef47be2a5c1 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -711,8 +711,10 @@ int __compat_save_altstack(compat_stack_t __user *, unsigned long); compat_stack_t __user *__uss = uss; \ struct task_struct *t = current; \ put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ - put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \ + put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ put_user_ex(t->sas_ss_size, &__uss->ss_size); \ + if (t->sas_ss_flags & SS_AUTODISARM) \ + sas_ss_reset(t); \ } while (0); asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, diff --git a/kernel/signal.c b/kernel/signal.c index 13f9def8b24a..214a8feeb771 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3239,10 +3239,17 @@ int compat_restore_altstack(const compat_stack_t __user *uss) int __compat_save_altstack(compat_stack_t __user *uss, unsigned long sp) { + int err; struct task_struct *t = current; - return __put_user(ptr_to_compat((void __user *)t->sas_ss_sp), &uss->ss_sp) | - __put_user(sas_ss_flags(sp), &uss->ss_flags) | + err = __put_user(ptr_to_compat((void __user *)t->sas_ss_sp), + &uss->ss_sp) | + __put_user(t->sas_ss_flags, &uss->ss_flags) | __put_user(t->sas_ss_size, &uss->ss_size); + if (err) + return err; + if (t->sas_ss_flags & SS_AUTODISARM) + sas_ss_reset(t); + return 0; } #endif |