gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

get_pid_cred(): proper locking around pid_task

Browse Source
This commit is contained in:
Balazs Gerofi
2016-12-25 17:17:03 +09:00
parent 3565959af7
commit e7af537452
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
executer/kernel/mcctrl/procfs.c
View File

@ -248,9 +248,11 @@ get_pid_cred(int pid)
{ {
struct task_struct *task = NULL; struct task_struct *task = NULL;
if(pid > 0){ if (pid > 0) {
rcu_read_lock();
task = pid_task(find_vpid(pid), PIDTYPE_PID); task = pid_task(find_vpid(pid), PIDTYPE_PID);
if(task){ rcu_read_unlock();
if (task) {
return __task_cred(task); return __task_cred(task);
} }
} }