diff mbox series

[next] PCI: endpoint: functions/pci-epf-test: fix memory leak of buf

Message ID 20200401223541.403438-1-colin.king@canonical.com
State New
Headers show
Series [next] PCI: endpoint: functions/pci-epf-test: fix memory leak of buf | expand

Commit Message

Colin Ian King April 1, 2020, 10:35 p.m. UTC 
From: Colin Ian King <colin.king@canonical.com>

In the case where data cannot be transferred using DMA the allocation
of buf leaked on the error return path. Fix this by jumping to the
label err_dma_map that kfree's buf before the return.

Addresses-Coverity: ("Resource leak")
Fixes: a558357b1b34 ("PCI: endpoint: functions/pci-epf-test: Add DMA support to transfer data")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/pci/endpoint/functions/pci-epf-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Alan Mikhak April 3, 2020, 7:51 p.m. UTC | #1 
Hi Colin,

Please note a similar leak in pci_epf_test_write().

Regards,
Alan Mikhak
diff mbox series

Patch

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 3b4cf7e2bc60..60330f3e3751 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -347,7 +347,7 @@  static int pci_epf_test_read(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;
 		}
 
 		dst_phys_addr = dma_map_single(dma_dev, buf, reg->size,