net/atm: fix proc_mpc_write incorrect return value
[ Upstream commit d8bde3bf7f82dac5fc68a62c2816793a12cafa2a ]
Then the input contains '\0' or '\n', proc_mpc_write has read them,
so the return value needs +1.
Fixes: 1da177e4c3
("Linux-2.6.12-rc2")
Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
31294deb75
commit
c5f762b60c
@ -222,11 +222,12 @@ static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
|
|||||||
if (!page)
|
if (!page)
|
||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
for (p = page, len = 0; len < nbytes; p++, len++) {
|
for (p = page, len = 0; len < nbytes; p++) {
|
||||||
if (get_user(*p, buff++)) {
|
if (get_user(*p, buff++)) {
|
||||||
free_page((unsigned long)page);
|
free_page((unsigned long)page);
|
||||||
return -EFAULT;
|
return -EFAULT;
|
||||||
}
|
}
|
||||||
|
len += 1;
|
||||||
if (*p == '\0' || *p == '\n')
|
if (*p == '\0' || *p == '\n')
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user