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authorChunfeng Yun <chunfeng.yun@mediatek.com>2021-12-18 17:57:48 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-21 09:05:45 +0100
commit8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bf (patch)
tree3ee693e1514196251499059f966dd3b8e342cd45 /drivers
parenta7aae769ca626819a7f9f078ebdc69a8a1b00c81 (diff)
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 <yuwen.ng@mediatek.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20211218095749.6250-3-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/mtu3/mtu3_gadget.c1
1 files changed, 1 insertions, 0 deletions
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;