cred: use correct cred accessor with regards to rcu read lock
Commit "userns: Convert setting and getting uid and gid system calls to use
kuid and kgid has modified the accessors in wait_task_continued() and
wait_task_stopped() to use __task_cred() instead of task_uid().
__task_cred() assumes that we're inside a rcu read lock, which is untrue
for these two functions.
Modify it to use task_uid() instead.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/kernel/exit.c b/kernel/exit.c
index 789e3c5..910a071 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1427,7 +1427,7 @@
if (!unlikely(wo->wo_flags & WNOWAIT))
*p_code = 0;
- uid = from_kuid_munged(current_user_ns(), __task_cred(p)->uid);
+ uid = from_kuid_munged(current_user_ns(), task_uid(p));
unlock_sig:
spin_unlock_irq(&p->sighand->siglock);
if (!exit_code)
@@ -1500,7 +1500,7 @@
}
if (!unlikely(wo->wo_flags & WNOWAIT))
p->signal->flags &= ~SIGNAL_STOP_CONTINUED;
- uid = from_kuid_munged(current_user_ns(), __task_cred(p)->uid);
+ uid = from_kuid_munged(current_user_ns(), task_uid(p));
spin_unlock_irq(&p->sighand->siglock);
pid = task_pid_vnr(p);