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* [PATCH] SUNRPC: Remove resource leak in svc_rdma_send_error()
@ 2011-01-22 21:40 Jesper Juhl
2011-03-17 18:37 ` J. Bruce Fields
0 siblings, 1 reply; 3+ messages in thread
From: Jesper Juhl @ 2011-01-22 21:40 UTC (permalink / raw)
To: linux-nfs
Cc: netdev, linux-kernel, Pavel Emelyanov, Chuck Lever, Tejun Heo,
Tom Tucker, David S. Miller, Trond Myklebust, Neil Brown,
J. Bruce Fields
We leak the memory allocated to 'ctxt' when we return after
'ib_dma_mapping_error()' returns !=0.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
---
svc_rdma_transport.c | 1 +
1 file changed, 1 insertion(+)
compile tested only
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 9df1ead..1a10dcd 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1335,6 +1335,7 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
p, 0, length, DMA_FROM_DEVICE);
if (ib_dma_mapping_error(xprt->sc_cm_id->device, ctxt->sge[0].addr)) {
put_page(p);
+ svc_rdma_put_context(ctxt, 1);
return;
}
atomic_inc(&xprt->sc_dma_used);
--
Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] SUNRPC: Remove resource leak in svc_rdma_send_error()
2011-01-22 21:40 [PATCH] SUNRPC: Remove resource leak in svc_rdma_send_error() Jesper Juhl
@ 2011-03-17 18:37 ` J. Bruce Fields
2011-03-17 18:54 ` Tom Tucker
0 siblings, 1 reply; 3+ messages in thread
From: J. Bruce Fields @ 2011-03-17 18:37 UTC (permalink / raw)
To: Jesper Juhl
Cc: linux-nfs, netdev, linux-kernel, Pavel Emelyanov, Chuck Lever,
Tejun Heo, Tom Tucker, David S. Miller, Trond Myklebust,
Neil Brown
On Sat, Jan 22, 2011 at 10:40:20PM +0100, Jesper Juhl wrote:
> We leak the memory allocated to 'ctxt' when we return after
> 'ib_dma_mapping_error()' returns !=0.
>
> Signed-off-by: Jesper Juhl <jj@chaosbits.net>
I don't know this code, but I can't see how that could be wrong....
Applying unless Tom tells me otherwise.
--b.
> ---
> svc_rdma_transport.c | 1 +
> 1 file changed, 1 insertion(+)
>
> compile tested only
>
> diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> index 9df1ead..1a10dcd 100644
> --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
> +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> @@ -1335,6 +1335,7 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
> p, 0, length, DMA_FROM_DEVICE);
> if (ib_dma_mapping_error(xprt->sc_cm_id->device, ctxt->sge[0].addr)) {
> put_page(p);
> + svc_rdma_put_context(ctxt, 1);
> return;
> }
> atomic_inc(&xprt->sc_dma_used);
>
>
> --
> Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/
> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
> Plain text mails only, please.
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] SUNRPC: Remove resource leak in svc_rdma_send_error()
2011-03-17 18:37 ` J. Bruce Fields
@ 2011-03-17 18:54 ` Tom Tucker
0 siblings, 0 replies; 3+ messages in thread
From: Tom Tucker @ 2011-03-17 18:54 UTC (permalink / raw)
To: J. Bruce Fields
Cc: Jesper Juhl, linux-nfs, netdev, linux-kernel, Pavel Emelyanov,
Chuck Lever, Tejun Heo, David S. Miller, Trond Myklebust,
Neil Brown
Hi Bruce,
I believe this fix is correct.
Tom
On 3/17/11 12:37 PM, J. Bruce Fields wrote:
> On Sat, Jan 22, 2011 at 10:40:20PM +0100, Jesper Juhl wrote:
>> We leak the memory allocated to 'ctxt' when we return after
>> 'ib_dma_mapping_error()' returns !=0.
>>
>> Signed-off-by: Jesper Juhl<jj@chaosbits.net>
> I don't know this code, but I can't see how that could be wrong....
> Applying unless Tom tells me otherwise.
>
> --b.
>
>> ---
>> svc_rdma_transport.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> compile tested only
>>
>> diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
>> index 9df1ead..1a10dcd 100644
>> --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
>> +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
>> @@ -1335,6 +1335,7 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
>> p, 0, length, DMA_FROM_DEVICE);
>> if (ib_dma_mapping_error(xprt->sc_cm_id->device, ctxt->sge[0].addr)) {
>> put_page(p);
>> + svc_rdma_put_context(ctxt, 1);
>> return;
>> }
>> atomic_inc(&xprt->sc_dma_used);
>>
>>
>> --
>> Jesper Juhl<jj@chaosbits.net> http://www.chaosbits.net/
>> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
>> Plain text mails only, please.
>>
> --
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-03-17 18:54 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2011-01-22 21:40 [PATCH] SUNRPC: Remove resource leak in svc_rdma_send_error() Jesper Juhl
2011-03-17 18:37 ` J. Bruce Fields
2011-03-17 18:54 ` Tom Tucker
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