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authorMike Christie <michaelc@cs.wisc.edu>2011-02-16 15:04:41 -0600
committerJames Bottomley <James.Bottomley@suse.de>2011-02-24 12:41:26 -0500
commitc7f7fd5b7ea114e0f85fc4f2a853f6564410588d (patch)
tree2e295b156c37a8d6ec6254ca6a1fed3db4b50118 /drivers/scsi/be2iscsi/be_iscsi.c
parent7c53c6f89d7a6487986c51cd73ae9a9be338a8f4 (diff)
downloadlinux-c7f7fd5b7ea114e0f85fc4f2a853f6564410588d.tar.bz2
[SCSI] be2iscsi: fix null ptr ref in conn get param
The ep_disconnect function could be freeing the ep while beiscsi_conn_get_param is running. This has the driver use the get ep param callback instead of the get conn param to fix this. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/be2iscsi/be_iscsi.c')
-rw-r--r--drivers/scsi/be2iscsi/be_iscsi.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index eaaa8813067d..868cc5590145 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -210,28 +210,20 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
}
/**
- * beiscsi_conn_get_param - get the iscsi parameter
- * @cls_conn: pointer to iscsi cls conn
+ * beiscsi_ep_get_param - get the iscsi parameter
+ * @ep: pointer to iscsi ep
* @param: parameter type identifier
* @buf: buffer pointer
*
* returns iscsi parameter
*/
-int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
+int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
enum iscsi_param param, char *buf)
{
- struct beiscsi_endpoint *beiscsi_ep;
- struct iscsi_conn *conn = cls_conn->dd_data;
- struct beiscsi_conn *beiscsi_conn = conn->dd_data;
+ struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
int len = 0;
SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_param, param= %d\n", param);
- beiscsi_ep = beiscsi_conn->ep;
- if (!beiscsi_ep) {
- SE_DEBUG(DBG_LVL_1,
- "In beiscsi_conn_get_param , no beiscsi_ep\n");
- return -ENODEV;
- }
switch (param) {
case ISCSI_PARAM_CONN_PORT:
@@ -244,7 +236,7 @@ int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
break;
default:
- return iscsi_conn_get_param(cls_conn, param, buf);
+ return -ENOSYS;
}
return len;
}