android/android_kernel_asus_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/atm: fix proc_mpc_write incorrect return value

Browse Source 
[ 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:
Xiaobo Liu 2022-10-14 10:05:40 +08:00 committed by Greg Kroah-Hartman
parent 4258c473ee
commit 6453077a00
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/atm/mpoa_proc.c
View File

@ -222,11 +222,12 @@ static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
if (!page)
return -ENOMEM;
for (p = page, len = 0; len < nbytes; p++, len++) {
for (p = page, len = 0; len < nbytes; p++) {
if (get_user(*p, buff++)) {
free_page((unsigned long)page);
return -EFAULT;
}
len += 1;
if (*p == '\0' || *p == '\n')
break;
}