From: sashiko-bot@kernel.org
To: "Binbin Deng" <18983559317@163.com>
Cc: linux-rdma@vger.kernel.org
Subject: Re: [PATCH v1] RDMA/rxe: unpublish the per-net tunnel socket before
Date: Wed, 23 Sep 2026 05:30:17 +0000 [thread overview]
Message-ID: <20260923053017.986ED1F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260923051800.244740-1-18983559317@163.com>
> KASAN reports a slab-use-after-free in ip6_route_output_flags()
> reached from rxe_find_route(), with the free in __sk_destruct() after
> rxe_sock_put(), and a user with CAP_NET_ADMIN can remove the device with
> "rdma link del rxe0" while RoCE v2 over IPv6 traffic keeps looking the
> socket up.
>
> BUG: KASAN: slab-use-after-free in ip6_route_output_flags+0x300/0x360
> Read of size 4 at addr ffff888115ddd794 by task kworker/u32:6/309
> Call Trace:
> <TASK>
> dump_stack_lvl+0x53/0x70
> print_report+0xd0/0x630
> ? __pfx__raw_spin_lock_irqsave+0x10/0x10
> ? ip6_route_output_flags+0x300/0x360
> kasan_report+0xce/0x100
> [ ... ]
>
> Fix by clearing the per-net pointer before the last reference is dropped.
>
> Fixes: f1327abd6abed ("RDMA/rxe: Support RDMA link creation and destruction per net namespace")
> Signed-off-by: Binbin Deng <18983559317@163.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260923051800.244740-1-18983559317@163.com?part=1
next prev parent reply other threads:[~2026-09-23 5:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-23 5:18 [PATCH v1] RDMA/rxe: unpublish the per-net tunnel socket before Binbin Deng
2026-09-23 5:30 ` sashiko-bot [this message]
2026-09-23 18:39 ` Zhu Yanjun
2026-09-29 18:26 ` Leon Romanovsky
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