From: Bernhard Kohl Date: Sun, 13 May 2012 21:39:37 +0000 (+0200) Subject: target: Fix SPC-2 RELEASE bug for multi-session iSCSI client setups X-Git-Url: http://git.alex.org.uk target: Fix SPC-2 RELEASE bug for multi-session iSCSI client setups This patch addresses a bug in a special case for target core SPC-2 RELEASE logic where the same physical client (eg: iSCSI InitiatorName) with differing iSCSI session identifiers (ISID) is allowed to incorrectly release the same client's SPC-2 reservation from the non reservation holding path. Note this bug is specific to iscsi-target w/ SPC-2 reservations, and with the default enforce_pr_isids=1 device attr setting in target-core controls if a InitiatorName + different ISID reservations are handled the same as a single iSCSI client entity. Signed-off-by: Bernhard Kohl Cc: Signed-off-by: Nicholas Bellinger --- diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 86f0c3b..c3148b1 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -220,6 +220,9 @@ int target_scsi2_reservation_release(struct se_task *task) if (dev->dev_reserved_node_acl != sess->se_node_acl) goto out_unlock; + if (dev->dev_res_bin_isid != sess->sess_bin_isid) + goto out_unlock; + dev->dev_reserved_node_acl = NULL; dev->dev_flags &= ~DF_SPC2_RESERVATIONS; if (dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID) {