From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 34D68302CD8 for ; Sat, 15 Nov 2025 18:59:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763233162; cv=none; b=G5I9zP7OTUBqd5Hn0i9qM530BwZL6jeVf7jlr1bPsogyBjVjTpjtdwtNeapT7lt5+hKspsCWLTgoxGGbwziyJhGayFVOUN1yuYZaa9ih4+qZqGSykhnxzd9NweDninR8ao6WGj4A3fSL3PLaC+4hdQQydgqfEqGoNe1uoFZE4LE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763233162; c=relaxed/simple; bh=e/LG2V68qjr6KYs1x+hk24Fd2s7sou2OoKXylbs/Xqw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=LyDYSiljywPEcQNDgLyIpT7ok9195x/MJbmiVUbgLLJgpcudDOo76mKzLO/KHom0NXXhHweUrHNXVnJjzVaRYZQR6aWCTvcekuE/6NC4DXgsnujaMiOnNMig+5snZwfGhhQS7ukzWplJ+qD5fE3XYzobztxKqYL453qgnkqYoRQ= 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=209.85.166.207 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-il1-f207.google.com with SMTP id e9e14a558f8ab-433689014feso37980975ab.1 for ; Sat, 15 Nov 2025 10:59:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763233160; x=1763837960; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=nrPZGbyCBd7pxlNyCqNfhdlpQ1jsL6PNLDxiOB2ByCU=; b=T0yDYpwt4n9Iipg9fygZMK2tdGX1tlzv2WABC9pBEuT/0xOrqzWkIyYZexDJZ02HN9 QCqyJyhDEZ7PlrLHy2c3qUBDMs9TxGQrutn7Gk7EU2SpT9oeKMYNt+CIR7QtrccK68o6 Bg7wS4aiLtlzIHhXVRtz5WzLzaQrIFJwyLtXW8tQspX72q3M11RWZk/GrDhY5y8I21Q8 UscWqXO/AcYeJTXT/DGJeDTM+YLqyrpBimVKVRU4SfyChBLokQ1prAW7T3xmpPfeurob zxvMa895sanl1pm5gCEfJOQNbkSNHyxoehEHc4nEzrg1+PxbX/2wFZtr/5+SHIZfmYQK daYw== X-Forwarded-Encrypted: i=1; AJvYcCXuG8jMO09wgztpD1CcgyRytfJ9td3I+t7e48Fpa4qMJjCBmprj+YNfkxf6hUk1w61uyTAKTT4MM9ntKvM=@vger.kernel.org X-Gm-Message-State: AOJu0YyjeJJXc1z8T10JGNVmgJjwN8N3Sye5/sZIbPZNzkRo2TsRytb4 5nJBmJth6K8Ab3KuxPFk7IXswkMatsWgLOSJyJufFZSDIA4ftjXCUyaQsy9HOSTSGtB4MNfd+ux LQ1clpBGs2IY/kl5uVwO3hvoA5yYwQ/7cp05xxlYVIrubcX8ey2Q31iIfrJ4= X-Google-Smtp-Source: AGHT+IGIvtH7/W2TzbqSnewRt4yal/nomyGfj2RzYewF4jvQdhiNwfk/CchVrF7sKV3yjwCUgoVZbp0XeVLoZaJzFRI0IV2rDvCY Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1947:b0:434:78d0:86a6 with SMTP id e9e14a558f8ab-4348c954efbmr107252825ab.30.1763233160379; Sat, 15 Nov 2025 10:59:20 -0800 (PST) Date: Sat, 15 Nov 2025 10:59:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6918cd88.050a0220.1c914e.0045.GAE@google.com> Subject: [syzbot] [net?] kernel BUG in ip6_pol_route (2) From: syzbot To: davem@davemloft.net, dsahern@kernel.org, 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: 7a0892d2836e Merge tag 'pci-v6.18-fixes-5' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b9a658580000 kernel config: https://syzkaller.appspot.com/x/.config?x=41ad820f608cb833 dashboard link: https://syzkaller.appspot.com/bug?extid=9b35e9bc0951140d13e6 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/168b5b7f897a/disk-7a0892d2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5d6e756ca306/vmlinux-7a0892d2.xz kernel image: https://storage.googleapis.com/syzbot-assets/d497b0a7a1f5/bzImage-7a0892d2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9b35e9bc0951140d13e6@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at net/ipv6/route.c:1473! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 9293 Comm: kworker/0:9 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1473 [inline] RIP: 0010:ip6_pol_route+0x117d/0x1180 net/ipv6/route.c:2305 Code: ab f8 e9 f4 fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 03 fb ff ff 48 89 df e8 ae 04 ab f8 e9 f6 fa ff ff e8 b4 44 49 f8 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e RSP: 0018:ffffc90004a073c0 EFLAGS: 00010293 RAX: ffffffff8975687c RBX: ffff888126df7000 RCX: ffff888024dd1e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004a074d0 R08: ffffe8ffffc4cdd7 R09: 1ffffd1ffff899ba R10: dffffc0000000000 R11: fffff91ffff899bb R12: ffff88823bf78f00 R13: ffffffff89755862 R14: dffffc0000000000 R15: 0000607ed8e55dd0 FS: 0000000000000000(0000) GS:ffff888126df7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdadd5ac18 CR3: 00000000370c4000 CR4: 00000000003526f0 Call Trace: pol_lookup_func include/net/ip6_fib.h:617 [inline] fib6_rule_lookup+0x1fc/0x6f0 net/ipv6/fib6_rules.c:120 ip6_route_output_flags_noref net/ipv6/route.c:2684 [inline] ip6_route_output_flags+0x364/0x5d0 net/ipv6/route.c:2696 ip6_dst_lookup_tail+0x299/0x1510 net/ipv6/ip6_output.c:1169 ip6_dst_lookup_flow+0x47/0xe0 net/ipv6/ip6_output.c:1272 send6+0x4ce/0x8d0 drivers/net/wireguard/socket.c:139 wg_socket_send_skb_to_peer+0x128/0x200 drivers/net/wireguard/socket.c:178 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1c8/0x7c0 drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1473 [inline] RIP: 0010:ip6_pol_route+0x117d/0x1180 net/ipv6/route.c:2305 Code: ab f8 e9 f4 fa ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 03 fb ff ff 48 89 df e8 ae 04 ab f8 e9 f6 fa ff ff e8 b4 44 49 f8 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e RSP: 0018:ffffc90004a073c0 EFLAGS: 00010293 RAX: ffffffff8975687c RBX: ffff888126df7000 RCX: ffff888024dd1e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004a074d0 R08: ffffe8ffffc4cdd7 R09: 1ffffd1ffff899ba R10: dffffc0000000000 R11: fffff91ffff899bb R12: ffff88823bf78f00 R13: ffffffff89755862 R14: dffffc0000000000 R15: 0000607ed8e55dd0 FS: 0000000000000000(0000) GS:ffff888126df7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdadd5ac18 CR3: 00000000370c4000 CR4: 00000000003526f0 --- 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