acrn-kernel/drivers/infiniband/sw
Bernard Metzler 5cf38e638e RDMA/siw: Fix connection failure handling
commit 53a3f77704 upstream.

In case immediate MPA request processing fails, the newly
created endpoint unlinks the listening endpoint and is
ready to be dropped. This special case was not handled
correctly by the code handling the later TCP socket close,
causing a NULL dereference crash in siw_cm_work_handler()
when dereferencing a NULL listener. We now also cancel
the useless MPA timeout, if immediate MPA request
processing fails.

This patch furthermore simplifies MPA processing in general:
Scheduling a useless TCP socket read in sk_data_ready() upcall
is now surpressed, if the socket is already moved out of
TCP_ESTABLISHED state.

Fixes: 6c52fdc244 ("rdma/siw: connection management")
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Link: https://lore.kernel.org/r/20230905145822.446263-1-bmt@zurich.ibm.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-10 22:00:45 +02:00
..
rdmavt
rxe RDMA/rxe: Fix incomplete state save in rxe_requester 2023-09-13 09:42:52 +02:00
siw RDMA/siw: Fix connection failure handling 2023-10-10 22:00:45 +02:00
Makefile