From 8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bf Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Sat, 18 Dec 2021 17:57:48 +0800 Subject: usb: mtu3: fix list_head check warning This is caused by uninitialization of list_head. BUG: KASAN: use-after-free in __list_del_entry_valid+0x34/0xe4 Call trace: dump_backtrace+0x0/0x298 show_stack+0x24/0x34 dump_stack+0x130/0x1a8 print_address_description+0x88/0x56c __kasan_report+0x1b8/0x2a0 kasan_report+0x14/0x20 __asan_load8+0x9c/0xa0 __list_del_entry_valid+0x34/0xe4 mtu3_req_complete+0x4c/0x300 [mtu3] mtu3_gadget_stop+0x168/0x448 [mtu3] usb_gadget_unregister_driver+0x204/0x3a0 unregister_gadget_item+0x44/0xa4 Fixes: 83374e035b62 ("usb: mtu3: add tracepoints to help debug") Cc: stable@vger.kernel.org Reported-by: Yuwen Ng Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/20211218095749.6250-3-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_gadget.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index c51be015345b..b6c8a4a99c4d 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -235,6 +235,7 @@ struct usb_request *mtu3_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) mreq->request.dma = DMA_ADDR_INVALID; mreq->epnum = mep->epnum; mreq->mep = mep; + INIT_LIST_HEAD(&mreq->list); trace_mtu3_alloc_request(mreq); return &mreq->request; -- cgit v1.2.3