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authorSagi Grimberg <sagig@mellanox.com>2015-04-14 18:08:13 +0300
committerDoug Ledford <dledford@redhat.com>2015-04-15 16:07:12 -0400
commita065fe6aa25ba6ba93c02dc13486131bb3c64d5f (patch)
tree1f947568457fe28015a016373baedc0212ff315c /drivers/infiniband/ulp/iser/iser_initiator.c
parent30bf1d58ae8e87fef20248c7166777deab0d7f9c (diff)
IB/iser: Fix wrong calculation of protection buffer length
This length miss-calculation may cause a silent data corruption in the DIX case and cause the device to reference unmapped area. Fixes: d77e65350f2d ('libiscsi, iser: Adjust data_length to include protection information') Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iser_initiator.c')
-rw-r--r--drivers/infiniband/ulp/iser/iser_initiator.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 20e859a6f1a6..76eb57b31a59 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -409,8 +409,8 @@ int iser_send_command(struct iscsi_conn *conn,
if (scsi_prot_sg_count(sc)) {
prot_buf->buf = scsi_prot_sglist(sc);
prot_buf->size = scsi_prot_sg_count(sc);
- prot_buf->data_len = data_buf->data_len >>
- ilog2(sc->device->sector_size) * 8;
+ prot_buf->data_len = (data_buf->data_len >>
+ ilog2(sc->device->sector_size)) * 8;
}
if (hdr->flags & ISCSI_FLAG_CMD_READ) {