Commit a065fe6a authored Apr 14, 2015 by Sagi Grimberg Committed by Doug Ledford Apr 15, 2015

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: d77e6535 ('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>

parent 30bf1d58

drivers/infiniband/ulp/iser/iser_initiator.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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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