linux-kernel - [PATCH 1/3] dlm: fix invalid free

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Message-Id: <20181102201822.12518-2-tycho@tycho.ws>
Date:   Fri,  2 Nov 2018 14:18:20 -0600
From:   Tycho Andersen <tycho@...ho.ws>
To:     Christine Caulfield <ccaulfie@...hat.com>,
        David Teigland <teigland@...hat.com>
Cc:     cluster-devel@...hat.com, linux-kernel@...r.kernel.org,
        Tycho Andersen <tycho@...ho.ws>
Subject: [PATCH 1/3] dlm: fix invalid free

dlm_config_nodes() does not allocate nodes on failure, so we should not
free() nodes when it fails.

Signed-off-by: Tycho Andersen <tycho@...ho.ws>
---
 fs/dlm/member.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index 3fda3832cf6a..cad6d85911a8 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -680,7 +680,7 @@ int dlm_ls_start(struct dlm_ls *ls)
 
 	error = dlm_config_nodes(ls->ls_name, &nodes, &count);
 	if (error < 0)
-		goto fail;
+		goto fail_rv;
 
 	spin_lock(&ls->ls_recover_lock);
 
@@ -712,8 +712,9 @@ int dlm_ls_start(struct dlm_ls *ls)
 	return 0;
 
  fail:
-	kfree(rv);
 	kfree(nodes);
+ fail_rv:
+	kfree(rv);
 	return error;
 }
 
-- 
2.17.1