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Date: Mon, 16 Jun 2014 16:44:04 -0700 (PDT) From: David Rientjes <rientjes@...gle.com> To: Steve Wise <swise@...ngridcomputing.com> cc: Nicholas Krause <xerofoify@...il.com>, swise@...lsio.com, roland@...nel.org, sean.hefty@...el.com, hal.rosenstock@...il.com, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] infiniband: Fixes memory leak in send_flowc On Mon, 16 Jun 2014, Steve Wise wrote: > On 6/16/2014 12:49 PM, Nicholas Krause wrote: > > Signed-off-by: Nicholas Krause <xerofoify@...il.com> > > --- > > drivers/infiniband/hw/cxgb4/cm.c | 5 ++++- > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/infiniband/hw/cxgb4/cm.c > > b/drivers/infiniband/hw/cxgb4/cm.c > > index 5e153f6..867e664 100644 > > --- a/drivers/infiniband/hw/cxgb4/cm.c > > +++ b/drivers/infiniband/hw/cxgb4/cm.c > > @@ -455,8 +455,11 @@ static void send_flowc(struct c4iw_ep *ep, struct > > sk_buff *skb) > > unsigned int flowclen = 80; > > struct fw_flowc_wr *flowc; > > int i; > > - > > Please add back the above blank line. > > > skb = get_skb(skb, flowclen, GFP_KERNEL); > > + if (!skb) { > > + kfree_skb(skb); > > Let's do a pr_warn() here; > > pr_warn(MOD "%s failed to allocate skb.\n", __func__); > No need, if the allocation from skbuff_head_cache fails in the slab allocator, the page allocator will loop forever for orders less than PAGE_ALLOC_COSTLY_ORDER or spew a page allocation failure warning with a stack trace that indicated the high order page allocation failed in this path. > > > + return; > > + } > > flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); > > flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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