linux-kernel - Re: [EXT] [PATCH] PCI: endpoint: functions/pci-epf-test: fix a potential memory leak

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Message-ID: <17f0ac8707d.e967ff2c113435.3595297833916391134@zohomail.com>
Date:   Fri, 18 Feb 2022 11:03:02 +0800
From:   Li Chen <lchen.firstlove@...omail.com>
To:     "xkernelwang" <xkernel.wang@...mail.com>
Cc:     "kishon@...com" <kishon@...com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "kw@...ux.com" <kw@...ux.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [EXT] [PATCH] PCI: endpoint: functions/pci-epf-test: fix a
 potential memory leak

Hi Xiaoke,
This is duplicate  to https://lore.kernel.org/lkml/17ed816b6f3.d4fb44fb69745.1048447841721382920@zohomail.com/T/

Regards,
Li

 ---- On Fri, 18 Feb 2022 00:31:24 +0800  <xkernel.wang@...mail.com> wrote ----
 > From: Xiaoke Wang <xkernel.wang@...mail.com>
 > 
 > In pci_epf_test_write(), there is an error path does not properly
 > release 'buf' which is allocated by kzalloc(). It is better to release
 > it by changing the target label of goto statement.
 > 
 > Signed-off-by: Xiaoke Wang <xkernel.wang@...mail.com>
 > ---
 >  drivers/pci/endpoint/functions/pci-epf-test.c | 2 +-
 >  1 file changed, 1 insertion(+), 1 deletion(-)
 > 
 > diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
 > index 90d84d3..41227dd 100644
 > --- a/drivers/pci/endpoint/functions/pci-epf-test.c
 > +++ b/drivers/pci/endpoint/functions/pci-epf-test.c
 > @@ -441,7 +441,7 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test)
 >          if (!epf_test->dma_supported) {
 >              dev_err(dev, "Cannot transfer data using DMA\n");
 >              ret = -EINVAL;
 > -            goto err_map_addr;
 > +            goto err_dma_map;
 >          }
 >  
 >          src_phys_addr = dma_map_single(dma_dev, buf, reg->size,
 > -- 
 > 
 > ######################################################################
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