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authorJan Beulich <JBeulich@suse.com>2017-04-04 06:27:22 -0600
committerBoris Ostrovsky <boris.ostrovsky@oracle.com>2017-04-04 10:11:06 -0400
commitac4cde398a96c1d28b1c28a0f69b6efd892a1c8a (patch)
tree6d034541449c0a0b15e560f34e7da6538d325d40 /drivers/xen
parent1914f0cd203c941bba72f9452c8290324f1ef3dc (diff)
xenbus: remove transaction holder from list before freeing
After allocation the item is being placed on the list right away. Consequently it needs to be taken off the list before freeing in the case xenbus_dev_request_and_reply() failed, as in that case the callback (xenbus_dev_queue_reply()) is not being called (and if it was called, it should do both). Fixes: 5584ea250ae44f929feb4c7bd3877d1c5edbf813 Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xenbus/xenbus_dev_frontend.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index 1f4733b80c87..f3b089b7c0b6 100644
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -442,8 +442,10 @@ static int xenbus_write_transaction(unsigned msg_type,
return xenbus_command_reply(u, XS_ERROR, "ENOENT");
rc = xenbus_dev_request_and_reply(&u->u.msg, u);
- if (rc)
+ if (rc && trans) {
+ list_del(&trans->list);
kfree(trans);
+ }
out:
return rc;