diff options
| -rw-r--r-- | fs/cifs/smb2ops.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index af446866cbe8..c5f521bcdee2 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -265,15 +265,18 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */, NULL /* no data input */, 0 /* no data input */, (char **)&out_buf, &ret_data_len); - - if ((rc == 0) && (ret_data_len > 0)) { + if (rc != 0) + cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc); + else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) { + cifs_dbg(VFS, "server returned bad net interface info buf\n"); + rc = -EINVAL; + } else { /* Dump info on first interface */ cifs_dbg(FYI, "Adapter Capability 0x%x\t", le32_to_cpu(out_buf->Capability)); cifs_dbg(FYI, "Link Speed %lld\n", le64_to_cpu(out_buf->LinkSpeed)); - } else - cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc); + } return rc; } |