commit: ca579c9f136af4274ccfd1bcaee7f38a29a0e2e9 From: Julia Lawall <[email protected]> Date: Tue, 4 Sep 2012 15:23:33 +0200 Subject: [SCSI] zfcp: remove invalid reference to list iterator variable
If list_for_each_entry, etc complete a traversal of the list, the iterator variable ends up pointing to an address at an offset from the list head, and not a meaningful structure. Thus this value should not be used after the end of the iterator. Replace port->adapter->scsi_host by adapter->scsi_host. This problem was found using Coccinelle (http://coccinelle.lip6.fr/). Oversight in upsteam commit of v2.6.37 a1ca48319a9aa1c5b57ce142f538e76050bb8972 "[SCSI] zfcp: Move ACL/CFDC code to zfcp_cfdc.c" which merged the content of zfcp_erp_port_access_changed(). Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: Steffen Maier <[email protected]> Reviewed-by: Martin Peschke <[email protected]> Cc: <[email protected]> #2.6.37+ Signed-off-by: James Bottomley <[email protected]> --- drivers/s390/scsi/zfcp_cfdc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c index fbd8b4d..49b82e4 100644 --- a/drivers/s390/scsi/zfcp_cfdc.c +++ b/drivers/s390/scsi/zfcp_cfdc.c @@ -293,7 +293,7 @@ void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *adapter) } read_unlock_irqrestore(&adapter->port_list_lock, flags); - shost_for_each_device(sdev, port->adapter->scsi_host) { + shost_for_each_device(sdev, adapter->scsi_host) { zfcp_sdev = sdev_to_zfcp(sdev); status = atomic_read(&zfcp_sdev->status); if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) || -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
