From: Ivan Pravdin <ipravdin.official@gmail.com>
To: syzbot+1e3edf922962b5ea40a4@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in raw_event_queue_add
Date: Fri, 6 Jun 2025 01:16:15 -0400 [thread overview]
Message-ID: <4a7f4d21-8b1c-4616-82bb-210395215035@gmail.com> (raw)
In-Reply-To: <683ed7e6.a00a0220.d8eae.006b.GAE@google.com>
#syz test
diff --git a/drivers/usb/gadget/legacy/raw_gadget.c b/drivers/usb/gadget/legacy/raw_gadget.c
index 20165e1582d9..d7fca01afbf1 100644
--- a/drivers/usb/gadget/legacy/raw_gadget.c
+++ b/drivers/usb/gadget/legacy/raw_gadget.c
@@ -120,9 +120,13 @@ static struct usb_raw_event *raw_event_queue_fetch(
static void raw_event_queue_destroy(struct raw_event_queue *queue)
{
int i;
+ unsigned long flags;
+ spin_lock_irqsave(&queue->lock, flags);
for (i = 0; i < queue->size; i++)
kfree(queue->events[i]);
+ spin_unlock_irqrestore(&queue->lock, flags);
+
queue->size = 0;
}
Ivan Pravdin
next prev parent reply other threads:[~2025-06-06 5:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-03 11:09 [syzbot] [usb?] KASAN: slab-use-after-free Read in raw_event_queue_add syzbot
2025-06-06 5:16 ` Ivan Pravdin [this message]
2025-06-06 5:16 ` syzbot
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