netdev - Re: [PATCH v4 next-next] net/cls_cgroup: Fix task_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: 
 <175787642000.3528285.12140096607438105996.git-patchwork-notify@kernel.org>
Date: Sun, 14 Sep 2025 19:00:20 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Yafang Shao <laoar.shao@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, horms@...nel.org, daniel@...earbox.net,
 bigeasy@...utronix.de, tgraf@...g.ch, paulmck@...nel.org,
 razor@...ckwall.org, netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH v4 next-next] net/cls_cgroup: Fix task_get_classid()
 during
 qdisc run

Hello:

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

On Tue,  2 Sep 2025 14:29:33 +0800 you wrote:
> During recent testing with the netem qdisc to inject delays into TCP
> traffic, we observed that our CLS BPF program failed to function correctly
> due to incorrect classid retrieval from task_get_classid(). The issue
> manifests in the following call stack:
> 
>         bpf_get_cgroup_classid+5
>         cls_bpf_classify+507
>         __tcf_classify+90
>         tcf_classify+217
>         __dev_queue_xmit+798
>         bond_dev_queue_xmit+43
>         __bond_start_xmit+211
>         bond_start_xmit+70
>         dev_hard_start_xmit+142
>         sch_direct_xmit+161
>         __qdisc_run+102             <<<<< Issue location
>         __dev_xmit_skb+1015
>         __dev_queue_xmit+637
>         neigh_hh_output+159
>         ip_finish_output2+461
>         __ip_finish_output+183
>         ip_finish_output+41
>         ip_output+120
>         ip_local_out+94
>         __ip_queue_xmit+394
>         ip_queue_xmit+21
>         __tcp_transmit_skb+2169
>         tcp_write_xmit+959
>         __tcp_push_pending_frames+55
>         tcp_push+264
>         tcp_sendmsg_locked+661
>         tcp_sendmsg+45
>         inet_sendmsg+67
>         sock_sendmsg+98
>         sock_write_iter+147
>         vfs_write+786
>         ksys_write+181
>         __x64_sys_write+25
>         do_syscall_64+56
>         entry_SYSCALL_64_after_hwframe+100
> 
> [...]

Here is the summary with links:
  - [v4,next-next] net/cls_cgroup: Fix task_get_classid() during qdisc run
    https://git.kernel.org/netdev/net-next/c/66048f8b3cc7

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html