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uti: Use copy_from_user() in mcexec_terminate_thread()

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This commit is contained in:
Masamichi Takagi
2018-02-18 18:17:40 +09:00
parent 58d038fcac
commit 062d7ecae3
1 changed files with 17 additions and 3 deletions
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20
executer/kernel/mcctrl/control.c
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@ -2459,9 +2459,12 @@ mcexec_sig_thread(ihk_os_t os, unsigned long arg, struct file *file)
long
mcexec_terminate_thread(ihk_os_t os, unsigned long *param, struct file *file)
{
int pid = param[0];
int tid = param[1];
struct task_struct *tsk = (struct task_struct *)param[3];
unsigned long param[4];
int rc;
int pid;
int tid;
long sig;
struct task_struct *tsk;
unsigned long flags;
struct host_thread *thread;
struct host_thread *prev;
@ -2469,6 +2472,17 @@ mcexec_terminate_thread(ihk_os_t os, unsigned long *param, struct file *file)
struct mcctrl_usrdata *usrdata = ihk_host_os_get_usrdata(os);
struct mcctrl_per_proc_data *ppd;
if (copy_from_user(param, arg, sizeof(unsigned long) * 4)) {
return -EFAULT;
}
pid = param[0];
tid = param[1];
sig = param[2];
tsk = (struct task_struct *)param[3];
//printk("%s: pid=%d,tid=%d,sig=%lx,task=%p\n", __FUNCTION__, pid, tid, sig, tsk);
write_lock_irqsave(&host_thread_lock, flags);
for (prev = NULL, thread = host_threads; thread;
prev = thread, thread = thread->next) {