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Diffstat (limited to 'fs')
-rw-r--r--fs/befs/linuxvfs.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 34ddda888e63..9158c07b2bd5 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -469,17 +469,22 @@ befs_follow_link(struct dentry *dentry, struct nameidata *nd)
befs_data_stream *data = &befs_ino->i_data.ds;
befs_off_t len = data->size;
- befs_debug(sb, "Follow long symlink");
-
- link = kmalloc(len, GFP_NOFS);
- if (!link) {
- link = ERR_PTR(-ENOMEM);
- } else if (befs_read_lsymlink(sb, data, link, len) != len) {
- kfree(link);
- befs_error(sb, "Failed to read entire long symlink");
+ if (len == 0) {
+ befs_error(sb, "Long symlink with illegal length");
link = ERR_PTR(-EIO);
} else {
- link[len - 1] = '\0';
+ befs_debug(sb, "Follow long symlink");
+
+ link = kmalloc(len, GFP_NOFS);
+ if (!link) {
+ link = ERR_PTR(-ENOMEM);
+ } else if (befs_read_lsymlink(sb, data, link, len) != len) {
+ kfree(link);
+ befs_error(sb, "Failed to read entire long symlink");
+ link = ERR_PTR(-EIO);
+ } else {
+ link[len - 1] = '\0';
+ }
}
} else {
link = befs_ino->i_data.symlink;