Chuck Lever bdb2ce8281 xprtrdma: Fix trace point use-after-free race ...

It's not safe to use resources pointed to by the @send_wr of
ib_post_send() _after_ that function returns. Those resources are
typically freed by the Send completion handler, which can run before
ib_post_send() returns.

Thus the trace points currently around ib_post_send() in the
client's RPC/RDMA transport are a hazard, even when they are
disabled. Rearrange them so that they touch the Work Request only
_before_ ib_post_send() is invoked.

Fixes: ab03eff58eb5 ("xprtrdma: Add trace points in RPC Call transmit paths")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

2020-04-20 10:44:01 -04:00

..

backchannel.c

xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt

2020-03-27 10:47:25 -04:00

frwr_ops.c

xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt

2020-03-27 10:47:25 -04:00

Makefile

xprtrdma: Remove support for FMR memory registration

2019-01-02 12:05:17 -05:00

module.c

NFS client updates for Linux 4.18

2018-06-12 10:09:03 -07:00

rpc_rdma.c

NFS client updates for Linux 5.7

2020-04-07 13:51:39 -07:00

svc_rdma_backchannel.c

svcrdma: Fix leak of transport addresses

2020-03-27 12:25:06 -04:00

svc_rdma_recvfrom.c

svcrdma: Fix double sync of transport header buffer

2020-03-16 12:04:33 -04:00

svc_rdma_rw.c

svcrdma: Rename svcrdma_encode trace points in send routines

2020-03-16 12:04:32 -04:00

svc_rdma_sendto.c

svcrdma: Avoid DMA mapping small RPC Replies

2020-03-16 12:04:33 -04:00

svc_rdma_transport.c

svcrdma: Remove svcrdma_cm_event() trace point

2020-03-16 12:04:32 -04:00

svc_rdma.c

svcrdma: Remove svc_rdma_wq

2019-08-19 10:59:28 -04:00

transport.c

xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt

2020-03-27 10:47:25 -04:00

verbs.c

xprtrdma: Fix trace point use-after-free race

2020-04-20 10:44:01 -04:00

xprt_rdma.h

xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt

2020-03-27 10:47:25 -04:00