From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+683f8cb11b94b1824c77@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in skb_queue_purge_reason (2)
Date: Wed, 5 Feb 2025 19:05:27 +0800 [thread overview]
Message-ID: <20250205110528.1938-1-hdanton@sina.com> (raw)
In-Reply-To: <67a228ba.050a0220.d7c5a.00b9.GAE@google.com>
On Tue, 04 Feb 2025 06:48:26 -0800
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 40b8e93e17bf Add linux-next specific files for 20250204
> git tree: linux-next
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12f74f64580000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
--- x/drivers/bluetooth/hci_mrvl.c
+++ y/drivers/bluetooth/hci_mrvl.c
@@ -97,11 +97,14 @@ static int mrvl_close(struct hci_uart *h
if (hu->serdev)
serdev_device_close(hu->serdev);
+ if (!mrvl)
+ goto out;
skb_queue_purge(&mrvl->txq);
skb_queue_purge(&mrvl->rawq);
kfree_skb(mrvl->rx_skb);
kfree(mrvl);
+out:
hu->priv = NULL;
return 0;
}
--
next prev parent reply other threads:[~2025-02-05 11:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-17 8:44 syzbot
2025-02-04 14:48 ` syzbot
2025-02-05 11:05 ` Hillf Danton [this message]
2025-02-05 11:31 ` syzbot
2025-02-10 11:26 ` syzbot
2025-02-11 14:16 ` [DMARC error] " Arseniy Krasnov
2025-02-11 16:22 ` Arseniy Krasnov
2025-02-11 16:51 ` Luiz Augusto von Dentz
2025-02-12 6:05 ` Arseniy Krasnov
2025-02-12 6:49 ` [syzbot] " syzbot
[not found] <0cc53c2e-a7cc-74ea-a5f0-928af997ecf7@salutedevices.com>
2025-02-12 7:14 ` syzbot
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