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SUNRPC: Fix Oops in xs_tcp_send_request() when transport is disconnected

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If a disconnection occurs while we're trying to reply to a server
callback, then we may end up calling xs_tcp_send_request() with a NULL
value for transport->inet, which trips up the call to
tcp_sock_set_cork().

Fixes: d737e5d418 ("SUNRPC: Set TCP_CORK until the transmit queue is empty")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2021-05-17 08:50:11 -04:00
parent a421d21860
commit d275880abc
1 changed files with 2 additions and 0 deletions
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2
net/sunrpc/xprtsock.c
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@ -1010,6 +1010,8 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
kernel_sock_shutdown(transport->sock, SHUT_RDWR); kernel_sock_shutdown(transport->sock, SHUT_RDWR);
return -ENOTCONN; return -ENOTCONN;
} }
if (!transport->inet)
return -ENOTCONN;
xs_pktdump("packet data:", xs_pktdump("packet data:",
req->rq_svec->iov_base, req->rq_svec->iov_base,