On 03/08/2017 04:35 PM, Johannes Thumshirn wrote:
> Hi Moni et al.,
>
> I'm getting a KASAN stack-out-of-bounds in rxe_post_send+0xdfe/0x1830
> [rdma_rxe] at addr ffff8800187072e8 with v4.11-rc1
>
> rxe_post_send+0xdfe is the following (note: the pr_err was inserted by
> me to aid debugging).
Quick follow up to my last mail
Slamming in a:
@@ -753,9 +757,18 @@ static int init_send_wqe(struct rxe_qp *qp, struct
ib_send_wr *ibwr,
memcpy(wqe->dma.sge, ibwr->sg_list,
num_sge * sizeof(struct ib_sge));
- wqe->iova = (mask & WR_ATOMIC_MASK) ?
- atomic_wr(ibwr)->remote_addr :
- rdma_wr(ibwr)->remote_addr;
+
+ if (ibwr->opcode == IB_WR_RDMA_WRITE ||
+ ibwr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
+ ibwr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
+ ibwr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD)
+ wqe->iova = (mask & WR_ATOMIC_MASK) ?
+ atomic_wr(ibwr)->remote_addr :
+ rdma_wr(ibwr)->remote_addr;
+
wqe->mask = mask;
wqe->dma.length = length;
wqe->dma.resid = length;
Gives me
[ 4.286632] rdma_rxe: qp#17 moved to error state
[ ...hang... ]
[ 64.847464] nvme nvme0: Connect command failed, error wo/DNR bit: 7
[ 64.859829]
==================================================================
[ 64.861048] BUG: KASAN: stack-out-of-bounds in
rxe_post_send+0x12f3/0x1880 [rdma_rxe] at addr ffff88001f787838
Which translates to:
(gdb) list *(rxe_post_send+0x12f3)
0x1e133 is in rxe_post_send (drivers/infiniband/sw/rxe/rxe_verbs.c:685).
680 switch (wr->opcode) {
681 case IB_WR_RDMA_WRITE_WITH_IMM:
682 wr->ex.imm_data = ibwr->ex.imm_data;
683 case IB_WR_RDMA_READ:
684 case IB_WR_RDMA_WRITE:
685 wr->wr.rdma.remote_addr =
rdma_wr(ibwr)->remote_addr;
686 wr->wr.rdma.rkey =
rdma_wr(ibwr)->rkey;
687 break;
688 case IB_WR_SEND_WITH_IMM:
689 wr->ex.imm_data = ibwr->ex.imm_data;
--
Johannes Thumshirn Storage
jthumshirn@xxxxxxx +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
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