From ba77e8c7f7044394c213e1221e630943c3379a6b Mon Sep 17 00:00:00 2001 From: Paul Aurich Date: Mon, 31 Dec 2018 14:13:34 -0800 Subject: [PATCH] smb3: fix large reads on encrypted connections commit 6d2f84eee098540ae857998fe32f29b9e2cd9613 upstream. When passing a large read to receive_encrypted_read(), ensure that the demultiplex_thread knows that a MID was processed. Without this, those operations never complete. This is a similar issue/fix to lease break handling: commit 7af929d6d05ba5564139718e30d5bc96bdbc716a ("smb3: fix lease break problem introduced by compounding") CC: Stable # 4.19+ Fixes: b24df3e30cbf ("cifs: update receive_encrypted_standard to handle compounded responses") Signed-off-by: Paul Aurich Tested-by: Yves-Alexis Perez Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg Signed-off-by: Greg Kroah-Hartman --- fs/cifs/smb2ops.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 812da3e56a22..f44bb4a304e9 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3184,8 +3184,10 @@ smb3_receive_transform(struct TCP_Server_Info *server, } /* TODO: add support for compounds containing READ. */ - if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) + if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { + *num_mids = 1; return receive_encrypted_read(server, &mids[0]); + } return receive_encrypted_standard(server, mids, bufs, num_mids); } -- GitLab