Messages in this thread Patch in this message | | | Date | Wed, 29 Apr 2009 15:07:22 -0700 | From | Greg KH <> | Subject | [patch 23/58] net/netrom: Fix socket locking |
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2.6.27-stable review patch. If anyone has any objections, please let us know.
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From: Jean Delvare <jdelvare@suse.de>
upstream commit: cc29c70dd581f85ee7a3e7980fb031f90b90a2ab
Patch "af_rose/x25: Sanity check the maximum user frame size" (commit 83e0bbcbe2145f160fbaa109b0439dae7f4a38a9) from Alan Cox got locking wrong. If we bail out due to user frame size being too large, we must unlock the socket beforehand.
Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- net/netrom/af_netrom.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -1084,8 +1084,10 @@ static int nr_sendmsg(struct kiocb *iocb /* Build a packet - the conventional user limit is 236 bytes. We can do ludicrously large NetROM frames but must not overflow */ - if (len > 65536) - return -EMSGSIZE; + if (len > 65536) { + err = -EMSGSIZE; + goto out; + } SOCK_DEBUG(sk, "NET/ROM: sendto: building packet.\n"); size = len + NR_NETWORK_LEN + NR_TRANSPORT_LEN;
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