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AJvYcCXdoFBy5Zl81UC7BRvfMCu+sVkTCKDzdeA+WKHl8KozQ0qeTqItMQHdiEwD7bBi0kkuttyfm7O2zKZGWDEyivJN2uxCMGBL X-Gm-Message-State: AOJu0Yz5AbcGGtelNp3csctnrjcw9jccPHvu4YuQ70fzjod0TN5hmhbX 2GyeSbQLmCDQL+n5eBDNyiI4rHlH+QSINYoNOPrxjxSYqHP6AzWH/IvY81wCAiFbdYliOI9FQ8t OkkpQeiWiq2Q+hKMi5FZurOKcLUm0HeFmip9vah69USv4JDzIOuYm7qc= X-Google-Smtp-Source: AGHT+IG/QPXR4IHrIJSsY3j5x3NB2UWwan6p1oCg29ULQe8EmqX4ej73KmFSMr8Cwbz+35hp1kPPkB7xZPmkVIr9S+0YeWylvL6d Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:832a:b0:4b0:a7f3:fc21 with SMTP id 8926c6da1cb9f-4b0a7f3fe55mr241332173.3.1716807566156; Mon, 27 May 2024 03:59:26 -0700 (PDT) Date: Mon, 27 May 2024 03:59:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000020f77306196d696c@google.com> Subject: [syzbot] [net?] WARNING in __ip6_make_skb (2) From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, quic_abchauha@quicinc.com, syzkaller-bugs@googlegroups.com, willemb@google.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2c1713a8f1c9 bpf: constify member bpf_sysctl_kern:: Table git tree: bpf-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=1056ba0c980000 kernel config: https://syzkaller.appspot.com/x/.config?x=17ffd15f654c98ba dashboard link: https://syzkaller.appspot.com/bug?extid=d7b227731ec589e7f4f0 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1050742c980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14fd6b1a980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2cad2c60a177/disk-2c1713a8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0c8a5f440db5/vmlinux-2c1713a8.xz kernel image: https://storage.googleapis.com/syzbot-assets/53bcec8870e5/bzImage-2c1713a8.xz The issue was bisected to: commit 1693c5db6ab8262e6f5263f9d211855959aa5acd Author: Abhishek Chauhan Date: Thu May 9 21:18:33 2024 +0000 net: Add additional bit to support clockid_t timestamp type bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14eeacb2980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=16eeacb2980000 console output: https://syzkaller.appspot.com/x/log.txt?x=12eeacb2980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d7b227731ec589e7f4f0@syzkaller.appspotmail.com Fixes: 1693c5db6ab8 ("net: Add additional bit to support clockid_t timestamp type") ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5089 at include/linux/skbuff.h:4226 skb_set_delivery_type_by_clockid include/linux/skbuff.h:4226 [inline] WARNING: CPU: 1 PID: 5089 at include/linux/skbuff.h:4226 __ip6_make_skb+0x14f8/0x2470 net/ipv6/ip6_output.c:1930 Modules linked in: CPU: 1 PID: 5089 Comm: syz-executor227 Not tainted 6.9.0-syzkaller-08561-g2c1713a8f1c9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:skb_set_delivery_type_by_clockid include/linux/skbuff.h:4226 [inline] RIP: 0010:__ip6_make_skb+0x14f8/0x2470 net/ipv6/ip6_output.c:1930 Code: c0 0f 85 94 0a 00 00 41 8b 5d 00 4d 85 f6 74 0d e8 dd 50 6e f7 83 e3 fc 44 09 e3 eb 79 e8 d0 50 6e f7 eb 6f e8 c9 50 6e f7 90 <0f> 0b 90 48 8b 5c 24 08 48 8d 7b 20 48 89 f8 48 c1 e8 03 42 80 3c RSP: 0018:ffffc9000345f400 EFLAGS: 00010293 RAX: ffffffff8a27e107 RBX: 00000000000000ff RCX: ffff888025a99e00 RDX: 0000000000000000 RSI: ffffffff8f6e8f20 RDI: 00000000000000ff RBP: ffffc9000345f610 R08: 0000000000000001 R09: ffffffff8a27e049 R10: 0000000000000003 R11: ffff888025a99e00 R12: ffff88807ab76730 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc9000345f6a0 FS: 000055556e2a2380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045ad50 CR3: 000000007e9e2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_make_skb+0x48b/0x530 net/ipv6/ip6_output.c:2046 udpv6_sendmsg+0x237f/0x3270 net/ipv6/udp.c:1584 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xef/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe6cfe18ab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe2f15e328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe6cfe18ab9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000003 RBP: 00007fe6cfe8b5f0 R08: 0000000000000006 R09: 0000000000000006 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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