linux-stable.git/net/sunrpc, branch v3.2.99

svcrpc: don't leak contexts on PROC_DESTROY

2017-03-16T02:18:44+00:00

commit 78794d1890708cf94e3961261e52dcec2cc34722 upstream.

Context expiry times are in units of seconds since boot, not unix time.

The use of get_seconds() here therefore sets the expiry time decades in
the future.  This prevents timely freeing of contexts destroyed by
client RPC_GSS_PROC_DESTROY requests.  We'd still free them eventually
(when the module is unloaded or the container shut down), but a lot of
contexts could pile up before then.

Fixes: c5b29f885afe "sunrpc: use seconds since boot in expiry cache"
Reported-by: Andy Adamson 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Ben Hutchings

NFS: Don't drop CB requests with invalid principals

2016-11-20T01:01:25+00:00

commit a4e187d83d88eeaba6252aac0a2ffe5eaa73a818 upstream.

Before commit 778be232a207 ("NFS do not find client in NFSv4
pg_authenticate"), the Linux callback server replied with
RPC_AUTH_ERROR / RPC_AUTH_BADCRED, instead of dropping the CB
request. Let's restore that behavior so the server has a chance to
do something useful about it, and provide a warning that helps
admins correct the problem.

Fixes: 778be232a207 ("NFS do not find client in NFSv4 ...")
Signed-off-by: Chuck Lever 
Tested-by: Steve Wise 
Signed-off-by: Anna Schumaker 
Signed-off-by: Ben Hutchings

svc: Avoid garbage replies when pc_func() returns rpc_drop_reply

2016-11-20T01:01:25+00:00

commit 0533b13072f4bf35738290d2cf9e299c7bc6c42a upstream.

If an RPC program does not set vs_dispatch and pc_func() returns
rpc_drop_reply, the server sends a reply anyway containing a single
word containing the value RPC_DROP_REPLY (in network byte-order, of
course). This is a nonsense RPC message.

Fixes: 9e701c610923 ("svcrpc: simpler request dropping")
Signed-off-by: Chuck Lever 
Tested-by: Steve Wise 
Signed-off-by: Anna Schumaker 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

sunrpc/cache: fix off-by-one in qword_get()

2016-04-01T00:54:34+00:00

commit b7052cd7bcf3c1478796e93e3dff2b44c9e82943 upstream.

The qword_get() function NUL-terminates its output buffer.  If the input
string is in hex format \xXXXX... and the same length as the output
buffer, there is an off-by-one:

  int qword_get(char **bpp, char *dest, int bufsize)
  {
      ...
      while (len < bufsize) {
          ...
          *dest++ = (h << 4) | l;
          len++;
      }
      ...
      *dest = '\0';
      return len;
  }

This patch ensures the NUL terminator doesn't fall outside the output
buffer.

Signed-off-by: Stefan Hajnoczi 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Ben Hutchings

SUNRPC: xs_reset_transport must mark the connection as disconnected

2015-10-13T02:46:07+00:00

commit 0c78789e3a030615c6650fde89546cadf40ec2cc upstream.

In case the reconnection attempt fails.

Signed-off-by: Trond Myklebust 
[bwh: Backported to 3.2: add local variable xprt]
Signed-off-by: Ben Hutchings

SUNRPC: Fix a memory leak in the backchannel code

2015-08-12T14:33:14+00:00

commit 88de6af24f2b48b06c514d3c3d0a8f22fafe30bd upstream.

req->rq_private_buf isn't initialised when xprt_setup_backchannel calls
xprt_free_allocation.

Fixes: fb7a0b9addbdb ("nfs41: New backchannel helper routines")
Signed-off-by: Trond Myklebust 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

sunrpc: fix braino in ->poll()

2015-05-09T22:16:24+00:00

commit 1711fd9addf214823b993468567cab1f8254fc51 upstream.

POLL_OUT isn't what callers of ->poll() are expecting to see; it's
actually __SI_POLL | 2 and it's a siginfo code, not a poll bitmap
bit...

Signed-off-by: Al Viro 
Cc: Bruce Fields 
Signed-off-by: Linus Torvalds 
Signed-off-by: Ben Hutchings

xprtrdma: Free the pd if ib_query_qp() fails

2015-05-09T22:16:14+00:00

commit 5ae711a24601257f395c1f8746ac95be0cbd75e5 upstream.

If ib_query_qp() fails or the memory registration mode isn't
supported, don't leak the PD. An orphaned IB/core resource will
cause IB module removal to hang.

Fixes: bd7ed1d13304 ("RPC/RDMA: check selected memory registration ...")
Signed-off-by: Chuck Lever 
Reviewed-by: Steve Wise 
Signed-off-by: Anna Schumaker 
[bwh: Backported to 3.2:
 - Adjust context
 - There are only 2 goto's to be changed, not 3]
Signed-off-by: Ben Hutchings

SUNRPC: Fix locking around callback channel reply receive

2014-12-14T16:23:58+00:00

commit 093a1468b6edb0e568be7311b8d2228d205702db upstream.

Both xprt_lookup_rqst() and xprt_complete_rqst() require that you
take the transport lock in order to avoid races with xprt_transmit().

Signed-off-by: Trond Myklebust 
Reviewed-by: Jeff Layton 
Signed-off-by: J. Bruce Fields 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

sunrpc: fix byte-swapping of displayed XID

2014-12-14T16:23:58+00:00

commit 71efecb3f58c8c7a15f6135e3f9b39d1e3d3fae3 upstream.

xprt_lookup_rqst() and bc_send_request() display a byte-swapped XID,
but receive_cb_reply() does not.

Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Ben Hutchings