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Subject: Re: [PATCH net/bpf] bpf: add bpf_prog_run_data_pointers()
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <176314031800.1740925.6385057833740804551.git-patchwork-notify@kernel.org>
Date: Fri, 14 Nov 2025 17:11:58 +0000
References: <20251112125516.1563021-1-edumazet@google.com>
In-Reply-To: <20251112125516.1563021-1-edumazet@google.com>
To: Eric Dumazet <edumazet@google.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
 davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
 netdev@vger.kernel.org, bpf@vger.kernel.org, horms@kernel.org,
 jhs@mojatatu.com, victor@mojatatu.com, xiyou.wangcong@gmail.com,
 jiri@resnulli.us, toke@redhat.com, eric.dumazet@gmail.com,
 syzkaller@googlegroups.com, paulb@nvidia.com

Hello:

This patch was applied to bpf/bpf.git (master)
by Martin KaFai Lau <martin.lau@kernel.org>:

On Wed, 12 Nov 2025 12:55:16 +0000 you wrote:
> syzbot found that cls_bpf_classify() is able to change
> tc_skb_cb(skb)->drop_reason triggering a warning in sk_skb_reason_drop().
> 
> WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [inline]
> WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214
> 
> struct tc_skb_cb has been added in commit ec624fe740b4 ("net/sched:
> Extend qdisc control block with tc control block"), which added a wrong
> interaction with db58ba459202 ("bpf: wire in data and data_end for
> cls_act_bpf").
> 
> [...]

Here is the summary with links:
  - [net/bpf] bpf: add bpf_prog_run_data_pointers()
    https://git.kernel.org/bpf/bpf/c/4ef927436258

You are awesome, thank you!
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