чт, 24 янв. 2019 г. в 17:02, Ronnie Sahlberg <lsahlber@xxxxxxxxxx>: > > minus the various headers and blobs that will be part of the reply. > > or else we might trigger a session reconnect. > > Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx> > --- > fs/cifs/smb2ops.c | 6 +++++- > fs/cifs/smb2pdu.h | 14 ++++++++++++-- > 2 files changed, 17 insertions(+), 3 deletions(-) > > diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c > index 34f621fe6dc0..66ae218714bd 100644 > --- a/fs/cifs/smb2ops.c > +++ b/fs/cifs/smb2ops.c > @@ -905,7 +905,11 @@ smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, > FILE_READ_EA, > FILE_FULL_EA_INFORMATION, > SMB2_O_INFO_FILE, > - SMB2_MAX_EA_BUF, > + CIFSMaxBufSize - 4 - > + SMB2_TRANSFORM_HEADER_SIZE - > + MAX_SMB2_CREATE_RESPONSE_SIZE - > + 72 - /* query info response */ > + MAX_SMB2_CLOSE_RESPONSE_SIZE, > &rsp_iov, &buftype, cifs_sb); The bigbuffer is > /* 4 len + 52 transform hdr + 64 hdr + 88 create rsp */ plus CIFSMaxBufSize. The 1st part (in /* */) can have 4 + SMB2_TRANSFORM_HEADER_SIZE + 72 (query response). The 2nd (CIFSMaxBufSize) is for MAX_SMB2_CREATE_RESPONSE_SIZE, MAX_SMB2_CLOSE_RESPONSE_SIZE + query resp output payload. It seems that output_len argument should be: output_len = CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - MAX_SMB2_CLOSE_RESPONSE_SIZE. Correct? -- Best regards, Pavel Shilovsky
