Commit adb6dc19 authored by Jaegeuk Kim's avatar Jaegeuk Kim

f2fs: return error when accessing insane flie offset

If file offset is insane, we have to return error instead of kernel panic.
Reported-by: default avatarEric Zhang <followme999@163.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 0adf6a1b
......@@ -555,7 +555,7 @@ static int get_node_path(struct inode *inode, long block,
level = 3;
goto got;
} else {
BUG();
return -E2BIG;
}
got:
return level;
......@@ -579,6 +579,8 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
int err = 0;
level = get_node_path(dn->inode, index, offset, noffset);
if (level < 0)
return level;
nids[0] = dn->inode->i_ino;
npage[0] = dn->inode_page;
......@@ -878,6 +880,8 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
trace_f2fs_truncate_inode_blocks_enter(inode, from);
level = get_node_path(inode, from, offset, noffset);
if (level < 0)
return level;
page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(page)) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment