From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
<linux-usb@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Eddie Hung <eddie.hung@mediatek.com>,
"Yuwen Ng" <yuwen.ng@mediatek.com>
Subject: [PATCH 3/3] usb: mtu3: fix list_head check warning
Date: Thu, 9 Dec 2021 11:14:24 +0800 [thread overview]
Message-ID: <20211209031424.17842-3-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <20211209031424.17842-1-chunfeng.yun@mediatek.com>
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
Reported-by: Yuwen Ng <yuwen.ng@mediatek.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
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;
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
next prev parent reply other threads:[~2021-12-09 3:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 3:14 [PATCH 1/3] usb: mtu3: fix interval value for intr and isoc Chunfeng Yun
2021-12-09 3:14 ` [PATCH 2/3] usb: mtu3: add memory barrier before set GPD's HWO Chunfeng Yun
2021-12-13 14:18 ` Greg Kroah-Hartman
2021-12-16 8:32 ` Chunfeng Yun
2021-12-09 3:14 ` Chunfeng Yun [this message]
2021-12-09 9:10 ` [PATCH 3/3] usb: mtu3: fix list_head check warning Sergey Shtylyov
2021-12-10 1:19 ` Chunfeng Yun
2021-12-13 14:19 ` Greg Kroah-Hartman
2021-12-16 8:43 ` Chunfeng Yun
2021-12-13 14:20 ` [PATCH 1/3] usb: mtu3: fix interval value for intr and isoc Greg Kroah-Hartman
2021-12-16 8:45 ` Chunfeng Yun
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211209031424.17842-3-chunfeng.yun@mediatek.com \
--to=chunfeng.yun@mediatek.com \
--cc=eddie.hung@mediatek.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-usb@vger.kernel.org \
--cc=matthias.bgg@gmail.com \
--cc=yuwen.ng@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).