linux-kernel - Re: [PATCH net] net, neigh: Fix null-ptr-deref in neigh_table

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Message-Id: <166744741655.12191.13515055087737354526.git-patchwork-notify@kernel.org>
Date:   Thu, 03 Nov 2022 03:50:16 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Chen Zhongjin <chenzhongjin@...wei.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, dsahern@...nel.org, daniel@...earbox.net,
        yangyingliang@...wei.com, stephen@...workplumber.org,
        wangyuweihx@...il.com, alexander.mikhalitsyn@...tuozzo.com,
        den@...nvz.org, xu.xin16@....com.cn
Subject: Re: [PATCH net] net, neigh: Fix null-ptr-deref in neigh_table_clear()

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 1 Nov 2022 20:15:52 +0800 you wrote:
> When IPv6 module gets initialized but hits an error in the middle,
> kenel panic with:
> 
> KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]
> CPU: 1 PID: 361 Comm: insmod
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
> RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370
> RSP: 0018:ffff888012677908 EFLAGS: 00000202
> ...
> Call Trace:
>  <TASK>
>  neigh_table_clear+0x94/0x2d0
>  ndisc_cleanup+0x27/0x40 [ipv6]
>  inet6_init+0x21c/0x2cb [ipv6]
>  do_one_initcall+0xd3/0x4d0
>  do_init_module+0x1ae/0x670
> ...
> Kernel panic - not syncing: Fatal exception
> 
> [...]

Here is the summary with links:
  - [net] net, neigh: Fix null-ptr-deref in neigh_table_clear()
    https://git.kernel.org/netdev/net/c/f8017317cb0b

You are awesome, thank you!
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