From 8dd7903e48df3779bc424196c22dc73b66d0643e Mon Sep 17 00:00:00 2001 From: Sunil Mushran Date: Wed, 11 Sep 2013 14:19:49 -0700 Subject: [PATCH] fs/ocfs2/cluster/tcp.c: fix possible null pointer dereferences Fix some possible null pointer dereferences that were detected by the static code analyser, smatch. Signed-off-by: Sunil Mushran Reported-by: Dan Carpenter Reported-by: Guozhonghua Cc: Sunil Mushran Cc: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/cluster/tcp.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index d644dc611425..d04a3c2fad3c 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -543,8 +543,9 @@ static void o2net_set_nn_state(struct o2net_node *nn, } if (was_valid && !valid) { - printk(KERN_NOTICE "o2net: No longer connected to " - SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc)); + if (old_sc) + printk(KERN_NOTICE "o2net: No longer connected to " + SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc)); o2net_complete_nodes_nsw(nn); } @@ -1695,13 +1696,12 @@ static void o2net_start_connect(struct work_struct *work) ret = 0; out: - if (ret) { + if (ret && sc) { printk(KERN_NOTICE "o2net: Connect attempt to " SC_NODEF_FMT " failed with errno %d\n", SC_NODEF_ARGS(sc), ret); /* 0 err so that another will be queued and attempted * from set_nn_state */ - if (sc) - o2net_ensure_shutdown(nn, sc, 0); + o2net_ensure_shutdown(nn, sc, 0); } if (sc) sc_put(sc); -- 2.20.1