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| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-10-29 12:26:17 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-11-04 19:46:19 -0400 |
| commit | d896ba8300ebd09e5fc9c43051d9eb36b65e996e (patch) | |
| tree | 7ca16fb82801fa28a737440a3a2985a532090125 /net | |
| parent | NFSv4.2 add tracepoint to OFFLOAD_CANCEL (diff) | |
| download | linux-dev-d896ba8300ebd09e5fc9c43051d9eb36b65e996e.tar.xz linux-dev-d896ba8300ebd09e5fc9c43051d9eb36b65e996e.zip | |
SUNRPC: Fix races when closing the socket
Ensure that we bump the xprt->connect_cookie when we set the
XPRT_CLOSE_WAIT flag so that another call to
xprt_conditional_disconnect() won't race with the reconnection.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprt.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 48560188e84d..691fe5a682b6 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -735,6 +735,8 @@ static void xprt_autoclose(struct work_struct *work) unsigned int pflags = memalloc_nofs_save(); trace_xprt_disconnect_auto(xprt); + xprt->connect_cookie++; + smp_mb__before_atomic(); clear_bit(XPRT_CLOSE_WAIT, &xprt->state); xprt->ops->close(xprt); xprt_release_write(xprt, NULL); diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index aa293e4a77fa..7fb302e202bc 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1134,6 +1134,7 @@ static void xs_run_error_worker(struct sock_xprt *transport, unsigned int nr) static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt) { + xprt->connect_cookie++; smp_mb__before_atomic(); clear_bit(XPRT_CLOSE_WAIT, &xprt->state); clear_bit(XPRT_CLOSING, &xprt->state); |