From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+8ed98cbd0161632bce95@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [can?] general protection fault in can_rx_unregister (2)
Date: Mon, 25 May 2026 11:35:50 +0800 [thread overview]
Message-ID: <tencent_E820E80EECC6CDFC793A6DA02D696CD8940A@qq.com> (raw)
In-Reply-To: <6a124882.050a0220.30ba69.0009.GAE@google.com>
#syz test
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 7bc86b176b4d..c9a79e087ed3 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -528,6 +528,8 @@ void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
spin_lock_bh(&net->can.rcvlists_lock);
dev_rcv_lists = can_dev_rcv_lists_find(net, dev);
+ if (!dev_rcv_lists)
+ goto out;
rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
/* Search the receiver list for the item to delete. This should
next prev parent reply other threads:[~2026-05-25 3:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-24 0:38 syzbot
2026-05-25 3:35 ` Edward Adam Davis [this message]
2026-05-25 4:32 ` syzbot
2026-05-25 11:48 ` Edward Adam Davis
2026-05-25 13:30 ` syzbot
2026-05-25 13:56 ` [PATCH] can: af_can: reject can rx unregister if dev is not can Edward Adam Davis
2026-05-25 18:15 ` Oliver Hartkopp
2026-05-25 23:46 ` Edward Adam Davis
2026-05-26 14:16 ` Oliver Hartkopp
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