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IB/iser: Fix wrong calculation of protection buffer length

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This length miss-calculation may cause a silent data corruption
in the DIX case and cause the device to reference unmapped area.

Fixes: d77e65350f ('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>
This commit is contained in:
Sagi Grimberg 2015-04-14 18:08:13 +03:00 committed by Doug Ledford
parent 30bf1d58ae
commit a065fe6aa2
1 changed files with 2 additions and 2 deletions
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4
drivers/infiniband/ulp/iser/iser_initiator.c
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@ -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) {