diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-01-10 11:15:51 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-01-10 16:52:47 -0500 |
| commit | b3a459961014b14c267544c327db033669493295 (patch) | |
| tree | 02d130f1ed845bc44b2a8a04c2a700c70fda6e9e | |
| parent | 18d3451c0d7e23d155db37b9ec1a8886c114a5d3 (diff) | |
IB/rxe: Fix a MR reference leak in check_rkey()
Avoid that calling check_rkey() for mem->state == RXE_MEM_STATE_FREE
triggers an MR reference leak.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Andrew Boyer <andrew.boyer@dell.com>
Cc: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_resp.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index 33defaddc000..60d78f45aa04 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -418,7 +418,7 @@ static enum resp_states check_length(struct rxe_qp *qp, static enum resp_states check_rkey(struct rxe_qp *qp, struct rxe_pkt_info *pkt) { - struct rxe_mem *mem; + struct rxe_mem *mem = NULL; u64 va; u32 rkey; u32 resid; @@ -459,38 +459,38 @@ static enum resp_states check_rkey(struct rxe_qp *qp, mem = lookup_mem(qp->pd, access, rkey, lookup_remote); if (!mem) { state = RESPST_ERR_RKEY_VIOLATION; - goto err1; + goto err; } if (unlikely(mem->state == RXE_MEM_STATE_FREE)) { state = RESPST_ERR_RKEY_VIOLATION; - goto err1; + goto err; } if (mem_check_range(mem, va, resid)) { state = RESPST_ERR_RKEY_VIOLATION; - goto err2; + goto err; } if (pkt->mask & RXE_WRITE_MASK) { if (resid > mtu) { if (pktlen != mtu || bth_pad(pkt)) { state = RESPST_ERR_LENGTH; - goto err2; + goto err; } resid = mtu; } else { if (pktlen != resid) { state = RESPST_ERR_LENGTH; - goto err2; + goto err; } if ((bth_pad(pkt) != (0x3 & (-resid)))) { /* This case may not be exactly that * but nothing else fits. */ state = RESPST_ERR_LENGTH; - goto err2; + goto err; } } } @@ -500,9 +500,9 @@ static enum resp_states check_rkey(struct rxe_qp *qp, qp->resp.mr = mem; return RESPST_EXECUTE; -err2: - rxe_drop_ref(mem); -err1: +err: + if (mem) + rxe_drop_ref(mem); return state; } |