From: Gustavo A. R. Silva gustavo@embeddedor.com
commit 66d1b0c0580b7f1b1850ee4423f32ac42afa2e92 upstream.
Remove pointer dereference after free.
pci_pool_free doesn't care about contents of td. It's just a void* for it
Addresses-Coverity-ID: 1091173 ("Use after free") Cc: stable@vger.kernel.org Acked-by: Michal Nazarewicz mina86@mina86.com Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com Link: https://lore.kernel.org/r/20191106202821.GA20347@embeddedor Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/gadget/udc/pch_udc.c | 1 - 1 file changed, 1 deletion(-)
--- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -1519,7 +1519,6 @@ static void pch_udc_free_dma_chain(struc td = phys_to_virt(addr); addr2 = (dma_addr_t)td->next; dma_pool_free(dev->data_requests, td, addr); - td->next = 0x00; addr = addr2; } req->chain_len = 1;