Patchwork ipvs: freeing uninitialized pointer on error

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Submitter Simon Horman
Date Jan. 28, 2013, 1:18 a.m.
Message ID <1359335914-27325-2-git-send-email-horms@verge.net.au>
Download mbox | patch
Permalink /patch/216087/
State Accepted
Headers show

Comments

Simon Horman - Jan. 28, 2013, 1:18 a.m.
From: Dan Carpenter <dan.carpenter@oracle.com>

If state != IP_VS_STATE_BACKUP then tinfo->buf is uninitialized.  If
kthread_run() fails then it means we free random memory resulting in an
oops.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
---
 net/netfilter/ipvs/ip_vs_sync.c |    2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index effa10c..44fd10c 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1795,6 +1795,8 @@  int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid)
 					     GFP_KERNEL);
 			if (!tinfo->buf)
 				goto outtinfo;
+		} else {
+			tinfo->buf = NULL;
 		}
 		tinfo->id = id;