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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2015-11-21 00:36:44 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-12-01 14:45:52 -0800
commitf9fa1887dcf26bd346665a6ae3d3f53dec54cba1 (patch)
tree3764610ae00991b4a007f561826c4bec4e2c5d02
parent464ad8c43a9ead98c2b0eaed86bea727f2ad106e (diff)
USB: whci-hcd: add check for dma mapping error
qset_fill_page_list() do not check for dma mapping errors. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/host/whci/qset.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index dc31c42..9f1c053 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -377,6 +377,10 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f
if (std->pl_virt == NULL)
return -ENOMEM;
std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
+ if (dma_mapping_error(whc->wusbhc.dev, std->dma_addr)) {
+ kfree(std->pl_virt);
+ return -EFAULT;
+ }
for (p = 0; p < std->num_pointers; p++) {
std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);