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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[safe/jmp/linux-2.6]
/
kernel
/
futex_compat.c
diff --git
a/kernel/futex_compat.c
b/kernel/futex_compat.c
index
3254d4e
..
d607a5b
100644
(file)
--- a/
kernel/futex_compat.c
+++ b/
kernel/futex_compat.c
@@
-135,7
+135,7
@@
compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
{
struct compat_robust_list_head __user *head;
unsigned long ret;
{
struct compat_robust_list_head __user *head;
unsigned long ret;
-
uid_t euid = current_euid()
;
+
const struct cred *cred = current_cred(), *pcred
;
if (!futex_cmpxchg_enabled)
return -ENOSYS;
if (!futex_cmpxchg_enabled)
return -ENOSYS;
@@
-151,8
+151,10
@@
compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
if (!p)
goto err_unlock;
ret = -EPERM;
if (!p)
goto err_unlock;
ret = -EPERM;
- if (euid != p->euid && euid != p->uid &&
- !capable(CAP_SYS_PTRACE))
+ pcred = __task_cred(p);
+ if (cred->euid != pcred->euid &&
+ cred->euid != pcred->uid &&
+ !capable(CAP_SYS_PTRACE))
goto err_unlock;
head = p->compat_robust_list;
read_unlock(&tasklist_lock);
goto err_unlock;
head = p->compat_robust_list;
read_unlock(&tasklist_lock);