Commit 72f9b0fa authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Sasha Levin

IB/iser: Fix wrong calculation of protection buffer length

[ Upstream commit a065fe6a ]

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

Fixes: d77e6535 ('libiscsi, iser: Adjust data_length to include protection information')
Signed-off-by: default avatarSagi Grimberg <sagig@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 4eb6d476
......@@ -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) {
......
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