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| author | Paul Aurich <paul@darkrain42.org> | 2018-12-31 14:13:34 -0800 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-01-02 23:03:56 -0600 |
| commit | 6d2f84eee098540ae857998fe32f29b9e2cd9613 (patch) | |
| tree | 7355a175aa07e44d2ef68fb482d1e09f66cc008d /fs | |
| parent | 645ff1e8e704c4f33ab1fcd3c87f95cb9b6d7144 (diff) | |
| download | linux-0-day-6d2f84eee098540ae857998fe32f29b9e2cd9613.tar.gz linux-0-day-6d2f84eee098540ae857998fe32f29b9e2cd9613.tar.xz | |
smb3: fix large reads on encrypted connections
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 <stable@vger.kernel.org> # 4.19+
Fixes: b24df3e30cbf ("cifs: update receive_encrypted_standard to handle compounded responses")
Signed-off-by: Paul Aurich <paul@darkrain42.org>
Tested-by: Yves-Alexis Perez <corsac@corsac.net>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/smb2ops.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 33100ef74d7f1..cf7eb891804f6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3472,8 +3472,10 @@ 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); } |