Did this not get sent to stable? (Now upstream as 84e28a307e376f271505af65a7b7e212dd6f61f4.)
--b. On Mon, Sep 24, 2012 at 01:39:01PM -0400, [email protected] wrote: > From: Bryan Schumaker <[email protected]> > > f39c1bfb5a03e2d255451bff05be0d7255298fa4 (SUNRPC: Fix a UDP transport > regression) introduced the "alloc_slot" function for xprt operations, > but never created one for the backchannel operations. This patch fixes > a null pointer dereference when mounting NFS over v4.1. > > Call Trace: > [<ffffffffa0207957>] ? xprt_reserve+0x47/0x50 [sunrpc] > [<ffffffffa02023a4>] call_reserve+0x34/0x60 [sunrpc] > [<ffffffffa020e280>] __rpc_execute+0x90/0x400 [sunrpc] > [<ffffffffa020e61a>] rpc_async_schedule+0x2a/0x40 [sunrpc] > [<ffffffff81073589>] process_one_work+0x139/0x500 > [<ffffffff81070e70>] ? alloc_worker+0x70/0x70 > [<ffffffffa020e5f0>] ? __rpc_execute+0x400/0x400 [sunrpc] > [<ffffffff81073d1e>] worker_thread+0x15e/0x460 > [<ffffffff8145c839>] ? preempt_schedule+0x49/0x70 > [<ffffffff81073bc0>] ? rescuer_thread+0x230/0x230 > [<ffffffff81079603>] kthread+0x93/0xa0 > [<ffffffff81465d04>] kernel_thread_helper+0x4/0x10 > [<ffffffff81079570>] ? kthread_freezable_should_stop+0x70/0x70 > [<ffffffff81465d00>] ? gs_change+0x13/0x13 > > Signed-off-by: Bryan Schumaker <[email protected]> > --- > net/sunrpc/xprtsock.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c > index 86b7777..aaaadfb 100644 > --- a/net/sunrpc/xprtsock.c > +++ b/net/sunrpc/xprtsock.c > @@ -2521,6 +2521,7 @@ static struct rpc_xprt_ops xs_tcp_ops = { > static struct rpc_xprt_ops bc_tcp_ops = { > .reserve_xprt = xprt_reserve_xprt, > .release_xprt = xprt_release_xprt, > + .alloc_slot = xprt_alloc_slot, > .rpcbind = xs_local_rpcbind, > .buf_alloc = bc_malloc, > .buf_free = bc_free, > -- > 1.7.12.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
