From: Marios Makassikis mmakassikis@freebox.fr
commit cdfb2fef522d0c3f9cf293db51de88e9b3d46846 upstream.
Currently, smb2_tree_connect doesn't send an error response packet on error.
This causes libsmb2 to skip the specific error code and fail with the following: smb2_service failed with : Failed to parse fixed part of command payload. Unexpected size of Error reply. Expected 9, got 8
Signed-off-by: Marios Makassikis mmakassikis@freebox.fr Acked-by: Namjae Jeon linkinjeon@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ksmbd/smb2pdu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -1926,13 +1926,13 @@ int smb2_tree_connect(struct ksmbd_work if (conn->posix_ext_supported) status.tree_conn->posix_extensions = true;
-out_err1: rsp->StructureSize = cpu_to_le16(16); + inc_rfc1001_len(work->response_buf, 16); +out_err1: rsp->Capabilities = 0; rsp->Reserved = 0; /* default manual caching */ rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; - inc_rfc1001_len(work->response_buf, 16);
if (!IS_ERR(treename)) kfree(treename); @@ -1965,6 +1965,9 @@ out_err1: rsp->hdr.Status = STATUS_ACCESS_DENIED; }
+ if (status.ret != KSMBD_TREE_CONN_STATUS_OK) + smb2_set_err_rsp(work); + return rc; }