The eager buffers are not being cleared before being mmapped into a new
user address space. This is a potential security risk and should be fixed.
Note that the eager header queue is already being cleared OK.
Signed-off-by: Ralph Campbell <ralph.campb...@qlogic.com>
---
drivers/infiniband/hw/qib/qib_init.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/qib/qib_init.c
b/drivers/infiniband/hw/qib/qib_init.c
index 2589599..1d4db4b 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -1472,6 +1472,9 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd)
dma_addr_t pa = rcd->rcvegrbuf_phys[chunk];
unsigned i;
+ /* clear for security and sanity on each use */
+ memset(rcd->rcvegrbuf[chunk], 0, size);
+
for (i = 0; e < egrcnt && i < egrperchunk; e++, i++) {
dd->f_put_tid(dd, e + egroff +
(u64 __iomem *)
--
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