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IB/hfi1: Validate SDMA user request index 

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hifive-unleashed-5.1
Dean Luick 2016-07-28 15:21:14 -04:00 committed by Doug Ledford
parent bdf7752e07
commit 4fa0d22c9a
1 changed files with 8 additions and 0 deletions
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8
drivers/infiniband/hw/hfi1/user_sdma.c
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@ -552,6 +552,14 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
trace_hfi1_sdma_user_reqinfo(dd, uctxt->ctxt, fd->subctxt,
(u16 *)&info);
if (info.comp_idx >= hfi1_sdma_comp_ring_size) {
hfi1_cdbg(SDMA,
"[%u:%u:%u:%u] Invalid comp index",
dd->unit, uctxt->ctxt, fd->subctxt, info.comp_idx);
return -EINVAL;
}
if (cq->comps[info.comp_idx].status == QUEUED ||
test_bit(SDMA_REQ_IN_USE, &pq->reqs[info.comp_idx].flags)) {
hfi1_cdbg(SDMA, "[%u:%u:%u] Entry %u is in QUEUED state",