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sched_setaffinity(): error handling for invalid input

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Balazs Gerofi
2016-08-19 11:52:44 +09:00
parent b9439947a7
commit a7ee3f531b
2 changed files with 8 additions and 1 deletions
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6
kernel/syscall.c
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@ -5674,6 +5674,10 @@ SYSCALL_DECLARE(sched_setaffinity)
int empty_set = 1;
extern int num_processors;
if (!u_cpu_set) {
return -EINVAL;
}
if (sizeof(k_cpu_set) > len) {
memset(&k_cpu_set, 0, sizeof(k_cpu_set));
}
@ -5681,7 +5685,7 @@ SYSCALL_DECLARE(sched_setaffinity)
len = MIN2(len, sizeof(k_cpu_set));
if (copy_from_user(&k_cpu_set, u_cpu_set, len)) {
kprintf("%s: error: copy_from_user failed for %p:%d\n", __FUNCTION__, u_cpu_set, len);
dkprintf("%s: error: copy_from_user failed for %p:%d\n", __FUNCTION__, u_cpu_set, len);
return -EFAULT;
}