From: Swen Schillig <swen@xxxxxxxxxxxx> The ERP got values assigned for which no reference was taken. This can lead to an unpredictable race condition. Fix this by only assigning the values which are required and for which a reference was pulled or is held implicitly. Signed-off-by: Swen Schillig <swen@xxxxxxxxxxxx> Signed-off-by: Christof Schmitt <christof.schmitt@xxxxxxxxxx> --- drivers/s390/scsi/zfcp_erp.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff -urpN linux-2.6/drivers/s390/scsi/zfcp_erp.c linux-2.6-patched/drivers/s390/scsi/zfcp_erp.c --- linux-2.6/drivers/s390/scsi/zfcp_erp.c 2010-11-17 10:04:27.000000000 +0100 +++ linux-2.6-patched/drivers/s390/scsi/zfcp_erp.c 2010-11-17 10:04:27.000000000 +0100 @@ -190,6 +190,9 @@ static struct zfcp_erp_action *zfcp_erp_ atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &zfcp_sdev->status); erp_action = &zfcp_sdev->erp_action; + memset(erp_action, 0, sizeof(struct zfcp_erp_action)); + erp_action->port = port; + erp_action->sdev = sdev; if (!(atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; @@ -202,6 +205,8 @@ static struct zfcp_erp_action *zfcp_erp_ zfcp_erp_action_dismiss_port(port); atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status); erp_action = &port->erp_action; + memset(erp_action, 0, sizeof(struct zfcp_erp_action)); + erp_action->port = port; if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; break; @@ -211,6 +216,7 @@ static struct zfcp_erp_action *zfcp_erp_ zfcp_erp_action_dismiss_adapter(adapter); atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status); erp_action = &adapter->erp_action; + memset(erp_action, 0, sizeof(struct zfcp_erp_action)); if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; @@ -220,10 +226,7 @@ static struct zfcp_erp_action *zfcp_erp_ return NULL; } - memset(erp_action, 0, sizeof(struct zfcp_erp_action)); erp_action->adapter = adapter; - erp_action->port = port; - erp_action->sdev = sdev; erp_action->action = need; erp_action->status = act_status; -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
