diff options
Diffstat (limited to 'arch/ia64/sn/kernel/sn2/sn2_smp.c')
| -rw-r--r-- | arch/ia64/sn/kernel/sn2/sn2_smp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c index 49d3120415eb..e585f9a2afb9 100644 --- a/arch/ia64/sn/kernel/sn2/sn2_smp.c +++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c @@ -512,6 +512,8 @@ static ssize_t sn2_ptc_proc_write(struct file *file, const char __user *user, si int cpu; char optstr[64]; + if (count == 0 || count > sizeof(optstr)) + return -EINVAL; if (copy_from_user(optstr, user, count)) return -EFAULT; optstr[count - 1] = '\0'; |