linux-kernel - Re: [PATCH] tipc: fix panic in tipc_udp_nl_dump_remoteip() using bearer as udp without check

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Message-ID: <20250613075156.5dc12d97@kernel.org>
Date: Fri, 13 Jun 2025 07:51:56 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Haixia Qu <hxqu@...lstonenet.com>
Cc: Jon Maloy <jmaloy@...hat.com>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon
 Horman <horms@...nel.org>, Richard Alpe <richard.alpe@...csson.com>, Jon
 Maloy <jon.maloy@...csson.com>, netdev@...r.kernel.org,
 tipc-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tipc: fix panic in tipc_udp_nl_dump_remoteip() using
 bearer as udp without check

On Fri, 13 Jun 2025 07:38:26 +0000 Haixia Qu wrote:
> When TIPC_NL_UDP_GET_REMOTEIP cmd calls tipc_udp_nl_dump_remoteip() 
> with media name set to a l2 name, kernel panics [1].

Please take the time and read the doc Eric mentioned to you.
You're doing other things wrong, too.