On Tue, 2018-03-13 at 14:51 -0700, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Subject: drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4
>
> gcc-4.4.4 has issues with initialization of anonymous unions.
That compiler was released in April of 2010, almost a full 8 years ago.
What still uses it, and do we seriously care?
>
> drivers/infiniband/core/verbs.c: In function '__ib_drain_sq':
> drivers/infiniband/core/verbs.c:2204: error: unknown field 'wr_cqe' specified in initializer
> drivers/infiniband/core/verbs.c:2204: warning: initialization makes integer from pointer without a cast
>
> Work around this.
>
> Fixes: a1ae7d0345edd5 ("RDMA/core: Avoid that ib_drain_qp() triggers an out-of-bounds stack access")
> Cc: Bart Van Assche <bart.vanassche@xxxxxxx>
> Cc: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
> Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
> Cc: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> ---
>
> drivers/infiniband/core/verbs.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff -puN drivers/infiniband/core/verbs.c~drivers-infiniband-core-verbsc-fix-build-with-gcc-444 drivers/infiniband/core/verbs.c
> --- a/drivers/infiniband/core/verbs.c~drivers-infiniband-core-verbsc-fix-build-with-gcc-444
> +++ a/drivers/infiniband/core/verbs.c
> @@ -2200,8 +2200,9 @@ static void __ib_drain_sq(struct ib_qp *
> struct ib_send_wr *bad_swr;
> struct ib_rdma_wr swr = {
> .wr = {
> + .next = NULL,
> + { .wr_cqe = &sdrain.cqe, },
> .opcode = IB_WR_RDMA_WRITE,
> - .wr_cqe = &sdrain.cqe,
> },
> };
> int ret;
> _
> --
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--
Doug Ledford <dledford@xxxxxxxxxx>
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