netdev - Re: [PATCH net v5] skmsg: skip zero length skb in sk_msg

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Message-Id: 
 <172051443055.11402.15346056734858431642.git-patchwork-notify@kernel.org>
Date: Tue, 09 Jul 2024 08:40:30 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Geliang Tang <geliang@...nel.org>
Cc: john.fastabend@...il.com, jakub@...udflare.com, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, ast@...nel.org,
 daniel@...earbox.net, tanggeliang@...inos.cn, dsahern@...nel.org,
 eddyz87@...il.com, mykolal@...com, martin.lau@...ux.dev, song@...nel.org,
 yonghong.song@...ux.dev, kpsingh@...nel.org, sdf@...gle.com,
 haoluo@...gle.com, jolsa@...nel.org, shuah@...nel.org, yatsenko@...a.com,
 miaxu@...a.com, yuran.pereira@...mail.com, chenhuacai@...nel.org,
 yangtiezhu@...ngson.cn, alibuda@...ux.alibaba.com, netdev@...r.kernel.org,
 bpf@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net v5] skmsg: skip zero length skb in sk_msg_recvmsg

Hello:

This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@...earbox.net>:

On Wed,  3 Jul 2024 16:39:31 +0800 you wrote:
> From: Geliang Tang <tanggeliang@...inos.cn>
> 
> Run this BPF selftests (./test_progs -t sockmap_basic) on a Loongarch
> platform, a kernel panic occurs:
> 
> '''
> Oops[#1]:
> CPU: 22 PID: 2824 Comm: test_progs Tainted: G           OE  6.10.0-rc2+ #18
> Hardware name: LOONGSON Dabieshan/Loongson-TC542F0, BIOS Loongson-UDK2018
>    ... ...
>    ra: 90000000048bf6c0 sk_msg_recvmsg+0x120/0x560
>   ERA: 9000000004162774 copy_page_to_iter+0x74/0x1c0
>  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
>  PRMD: 0000000c (PPLV0 +PIE +PWE)
>  EUEN: 00000007 (+FPE +SXE +ASXE -BTE)
>  ECFG: 00071c1d (LIE=0,2-4,10-12 VS=7)
> ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
>  BADV: 0000000000000040
>  PRID: 0014c011 (Loongson-64bit, Loongson-3C5000)
> Modules linked in: bpf_testmod(OE) xt_CHECKSUM xt_MASQUERADE xt_conntrack
> Process test_progs (pid: 2824, threadinfo=0000000000863a31, task=...)
> Stack : ...
>         ...
> Call Trace:
> [<9000000004162774>] copy_page_to_iter+0x74/0x1c0
> [<90000000048bf6c0>] sk_msg_recvmsg+0x120/0x560
> [<90000000049f2b90>] tcp_bpf_recvmsg_parser+0x170/0x4e0
> [<90000000049aae34>] inet_recvmsg+0x54/0x100
> [<900000000481ad5c>] sock_recvmsg+0x7c/0xe0
> [<900000000481e1a8>] __sys_recvfrom+0x108/0x1c0
> [<900000000481e27c>] sys_recvfrom+0x1c/0x40
> [<9000000004c076ec>] do_syscall+0x8c/0xc0
> [<9000000003731da4>] handle_syscall+0xc4/0x160
> 
> [...]

Here is the summary with links:
  - [net,v5] skmsg: skip zero length skb in sk_msg_recvmsg
    https://git.kernel.org/bpf/bpf/c/f0c180256937

You are awesome, thank you!
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