diff options
| author | Jarek Poplawski <jarkao2@gmail.com> | 2010-01-16 01:04:04 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-02-09 04:50:56 -0800 |
| commit | a74e62c2ef1fda92ad697556261b0e00fee5d581 (patch) | |
| tree | 778a0008b9128fcebfad332a4d9749d55e6a56de /net/netrom | |
| parent | 3125258f78ae4930916d8c569a10dfd621db77ba (diff) | |
ax25: netrom: rose: Fix timer oopses
[ Upstream commit d00c362f1b0ff54161e0a42b4554ac621a9ef92d ]
Wrong ax25_cb refcounting in ax25_send_frame() and by its callers can
cause timer oopses (first reported with 2.6.29.6 kernel).
Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=14905
Reported-by: Bernard Pidoux <bpidoux@free.fr>
Tested-by: Bernard Pidoux <bpidoux@free.fr>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/netrom')
| -rw-r--r-- | net/netrom/nr_route.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index 4eb1ac9a767..850ffc00390 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -842,12 +842,13 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25) dptr = skb_push(skb, 1); *dptr = AX25_P_NETROM; - ax25s = ax25_send_frame(skb, 256, (ax25_address *)dev->dev_addr, &nr_neigh->callsign, nr_neigh->digipeat, nr_neigh->dev); - if (nr_neigh->ax25 && ax25s) { - /* We were already holding this ax25_cb */ + ax25s = nr_neigh->ax25; + nr_neigh->ax25 = ax25_send_frame(skb, 256, + (ax25_address *)dev->dev_addr, + &nr_neigh->callsign, + nr_neigh->digipeat, nr_neigh->dev); + if (ax25s) ax25_cb_put(ax25s); - } - nr_neigh->ax25 = ax25s; dev_put(dev); ret = (nr_neigh->ax25 != NULL); |