[PATCH net 0/4] rxrpc: Fixes ver #2

[David Howells]

Here are a number of fixes for AF_RXRPC:

 (1) Fix a potential use after free in rxrpc_put_local() where it was
     accessing the object just put to get tracing information.

 (2) Fix insufficient notifications being generated by the function that
     queues data packets on a call.  This occasionally causes recvmsg() to
     stall indefinitely.

 (3) Fix a number of packet-transmitting work functions to hold an active
     count on the local endpoint so that the UDP socket doesn't get
     destroyed whilst they're calling kernel_sendmsg() on it.

 (4) Fix a NULL pointer deref that stemmed from a call's connection pointer
     being cleared when the call was disconnected.

Changes:

 v2: Removed a couple of BUG() statements that got added.

The patches are tagged here:

	git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
	rxrpc-fixes-20200130

and can also be found on the following branch:

	http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=rxrpc-fixes

David
---
David Howells (4):
      rxrpc: Fix use-after-free in rxrpc_put_local()
      rxrpc: Fix insufficient receive notification generation
      rxrpc: Fix missing active use pinning of rxrpc_local object
      rxrpc: Fix NULL pointer deref due to call->conn being cleared on disconnect


 net/rxrpc/af_rxrpc.c     |    2 ++
 net/rxrpc/ar-internal.h  |   11 +++++++++++
 net/rxrpc/call_object.c  |    4 ++--
 net/rxrpc/conn_client.c  |    3 +--
 net/rxrpc/conn_event.c   |   30 ++++++++++++++++++++----------
 net/rxrpc/conn_object.c  |    4 ++--
 net/rxrpc/input.c        |    6 ++----
 net/rxrpc/local_object.c |   23 +++++++++++------------
 net/rxrpc/output.c       |   27 +++++++++------------------
 net/rxrpc/peer_event.c   |   42 +++++++++++++++++++++++-------------------
 10 files changed, 83 insertions(+), 69 deletions(-)