From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f78.google.com (mail-oa1-f78.google.com [209.85.160.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4A4BA314A67 for ; Tue, 20 Jan 2026 16:15:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768925734; cv=none; b=ru+/a6Vr+YXiTRTQZ4qlGZaZzEFLmiPJMj1AYRuvJuMQIS3ZqL05/nMWFMP7DgtSkDrnz8DMB1lzMXdDzGTLh1rBVFD0PcRbCZYvyIjUs/G9k30KT/SmM8BrvWs74EepilzAYuCe03Ax8BP292jIfA3dl54+L2JaEfJE54aQDmU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768925734; c=relaxed/simple; bh=Twa0jOFil5YiUIIWht/Y+QEC8GMD8rP/HD43jjr9t24=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=LyOjCWCOJIAiOSZRk+tn1hQB+aZx+fa44mhy24MknCMFROM5oXUgvGwT0liisJqj6b+1Un7uGJng73UCdtkVFjLzP+rLGae9QtZVzPKi6HzXUqEYPifIrVZw+GLWCrSvcZFHknmF5c0ZDA2fvx55Hqlqb7/GY/eUZ89DUei8/88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.160.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oa1-f78.google.com with SMTP id 586e51a60fabf-4081db82094so4000998fac.0 for ; Tue, 20 Jan 2026 08:15:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768925732; x=1769530532; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ZufEKCYQ3g1YhCFtyBBjkiGEIMWxhwcBQ1yp8jpI5wg=; b=b+2DAGzoVR8huVuuy3106PtYYncJHYoZkd703uwq7RT4xhUe822HfOT517Mke1lIFG n4RVo8oPn6Qh2orUTF0T5Jg5ybZPJb5XzbA3pFmGelClOy2PfGzFmiUbWRnw+SDwjL42 KuEofY2HnWKGajpXxmrV+3PVpYgiPvTLsAiJcOAFeh+D8VYlt1qITK8HUK6CIcTo8teT ajLdC/Do2MSwoKGQLkhQQv2a+YYa68+A4xeDW+NSCptYq4cXyw9GciYeUqnRI1zzskg8 SKJ890SF4CFTsQbOy9IXAVMlim9h9mghYobKzURSYEPO/ke7QaAQHb6goPHNUIeSgzIY M7PA== X-Forwarded-Encrypted: i=1; AJvYcCUIQTHkEGnTJpmhSv+nsbJc9uIKyYRg+C6KaAExkYl/DlSAa2j5P4bW2GSLWvkYfi8yTeNQOp0=@vger.kernel.org X-Gm-Message-State: AOJu0YwD8Vne0iGj9FiZ9Ilnn7gtlWCvz8ZFXOBgx7FmidzgqgwyYZe8 2pw5L/W0b9A50kAMNI5TxCGMX6u7Y2gZV9ck2mat53U/6B7ID4pLO+6Jo2hLS2G3gPVmZTBI12x vXdFiYFpw87FqlJZ9xQW5OR+UT1mZGROdXO2xsKEYCByzgzI/IZ1gEPznGNM= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:e901:0:b0:660:ffa9:c3fc with SMTP id 006d021491bc7-66117a09263mr6325955eaf.66.1768925731909; Tue, 20 Jan 2026 08:15:31 -0800 (PST) Date: Tue, 20 Jan 2026 08:15:31 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <696faa23.050a0220.4cb9c.001f.GAE@google.com> Subject: [syzbot] [net?] WARNING in __skb_flow_dissect (7) From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: dfdf77465620 net: airoha: Fix typo in airoha_ppe_setup_tc_.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=159d4052580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a94030c847137a18 dashboard link: https://syzkaller.appspot.com/bug?extid=c46409299c70a221415e compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9f2960b575f2/disk-dfdf7746.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3b48823d17c0/vmlinux-dfdf7746.xz kernel image: https://storage.googleapis.com/syzbot-assets/852fefdd1d14/bzImage-dfdf7746.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c46409299c70a221415e@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131, CPU#1: syz.2.1418/11053 Modules linked in: CPU: 1 UID: 0 PID: 11053 Comm: syz.2.1418 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131 Code: 55 00 00 80 3d 94 c5 36 06 01 0f 85 b3 55 00 00 e8 be 8d 8b f8 e9 83 f9 ff ff e8 b4 8d 8b f8 e9 b0 03 00 00 e8 aa 8d 8b f8 90 <0f> 0b 90 e9 16 ff ff ff e8 9c 8d 8b f8 c6 05 5d c5 36 06 01 48 c7 RSP: 0000:ffffc900033a7100 EFLAGS: 00010287 RAX: ffffffff8935c70e RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc9000d75c000 RSI: 0000000000000539 RDI: 000000000000053a RBP: ffffc900033a7718 R08: ffffffff893562c8 R09: ffffffff8df41aa0 R10: ffffc900033a77a0 R11: fffff52000674efe R12: dffffc0000000000 R13: ffffffff893562c8 R14: 0000000000000000 R15: ffffffff8f825fd0 FS: 00007fea4dbe96c0(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c38c723 CR3: 00000000294c6000 CR4: 00000000003526f0 Call Trace: bond_flow_dissect drivers/net/bonding/bond_main.c:4093 [inline] __bond_xmit_hash+0x2d7/0xba0 drivers/net/bonding/bond_main.c:4157 bond_xmit_hash_xdp drivers/net/bonding/bond_main.c:4208 [inline] bond_xdp_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5139 [inline] bond_xdp_get_xmit_slave+0x1fd/0x710 drivers/net/bonding/bond_main.c:5515 xdp_master_redirect+0x13f/0x2c0 net/core/filter.c:4388 bpf_prog_run_xdp include/net/xdp.h:700 [inline] bpf_test_run+0x6b2/0x7d0 net/bpf/test_run.c:421 bpf_prog_test_run_xdp+0x795/0x10e0 net/bpf/test_run.c:1390 bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4703 __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6182 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fea4cd8f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fea4dbe9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fea4cfe5fa0 RCX: 00007fea4cd8f749 RDX: 0000000000000059 RSI: 0000200000000600 RDI: 000000000000000a RBP: 00007fea4ce13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fea4cfe6038 R14: 00007fea4cfe5fa0 R15: 00007ffdb8efbed8 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup