From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38AC234CD9 for ; Tue, 16 May 2023 13:53:37 +0000 (UTC) Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C9551FC2 for ; Tue, 16 May 2023 06:53:08 -0700 (PDT) Received: by mail-io1-f77.google.com with SMTP id ca18e2360f4ac-76984376366so2120736439f.3 for ; Tue, 16 May 2023 06:53:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684245187; x=1686837187; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Qr1vxVy6HYuTJTNyHtExF0PIYPUvWYwA1LbBeMRycn8=; b=hwHBe8jyOr7dOucqh9RMhvG+g8pMMMYyvB6l7CVtHHGfz/CicXv2jYK8YKTX0Wu8g7 8xsWL8KXnM9118SuSx0ICIRWHlHJkaqEp/Q3H58Is93/xYl9jo/cw+njttJTA8mzGx/b bxKLVyT6Wm2xmxbXX51S9OiYKu5pnhmy/NB/Q40e28FHpwXWp6wNKGJvwOa98kkr+v+q +DBfwxOEgT8FzoniNyU1G5iHWG234mf3X58csfnYcvlhiGazlztvfKOf+Uos0ikRzKvI n8gdlWrW8gIQuMJRBM5mZ3a2M87Y2B3oTzcPVFEs8Ox323ezA0PL+HUsJo9QvV+IR54G ZnEw== X-Gm-Message-State: AC+VfDxiyeFFrqI6cv5UV/BJH98ZTNUenKhQMtdckxAwEEPUeKKXV7KM f4rEAj5u49HW7jquVVKieHEHgFY8Pb4YUQY9yD/eqAKluFun X-Google-Smtp-Source: ACHHUZ66Gvsco3OMXyd2QdavElasL3aFdn+O1mUwGOadw/tUjbTPakzD6obGIA1lQaneS1eNW4rh3XT8YpxlB08CMeKX9B1ZwzjK Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a02:94a9:0:b0:40f:77a4:7e17 with SMTP id x38-20020a0294a9000000b0040f77a47e17mr12616665jah.0.1684245186965; Tue, 16 May 2023 06:53:06 -0700 (PDT) Date: Tue, 16 May 2023 06:53:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001575fe05fbcfe473@google.com> Subject: [syzbot] [net?] net-next test error: WARNING in register_net_sysctl From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, 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" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SORTED_RECIPS, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello, syzbot found the following issue on: HEAD commit: 8b33485128ad net: skbuff: update comment about pfmemalloc .. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=127f776e280000 kernel config: https://syzkaller.appspot.com/x/.config?x=8bc832f563d8bf38 dashboard link: https://syzkaller.appspot.com/bug?extid=a5e719ac7c268e414c95 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dede64e71bac/disk-8b334851.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/641ec7bf48a8/vmlinux-8b334851.xz kernel image: https://storage.googleapis.com/syzbot-assets/155dbbd26fa3/bzImage-8b334851.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a5e719ac7c268e414c95@syzkaller.appspotmail.com ------------[ cut here ]------------ sysctl net/ipv4/ipfrag_low_thresh: data points to kernel global data: ipfrag_low_thresh_unused WARNING: CPU: 0 PID: 5005 at net/sysctl_net.c:155 ensure_safe_net_sysctl net/sysctl_net.c:155 [inline] WARNING: CPU: 0 PID: 5005 at net/sysctl_net.c:155 register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167 Modules linked in: CPU: 0 PID: 5005 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00234-g8b33485128ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:ensure_safe_net_sysctl net/sysctl_net.c:155 [inline] RIP: 0010:register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167 Code: 8b 43 f4 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a9 01 00 00 48 8b 53 ec 4c 89 e9 4c 89 fe 48 c7 c7 c0 01 85 8b e8 59 61 81 f7 <0f> 0b 48 89 d8 48 c1 e8 03 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01 RSP: 0018:ffffc90003a3fbf8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88802a554454 RCX: 0000000000000000 RDX: ffff888028aebb80 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802a554448 R13: ffffffff8b850040 R14: 0000000000000000 R15: ffffffff8b694ce0 FS: 0000555556d45400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005592b998eff0 CR3: 0000000070817000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip4_frags_ns_ctl_register net/ipv4/ip_fragment.c:618 [inline] ipv4_frags_init_net net/ipv4/ip_fragment.c:689 [inline] ipv4_frags_init_net+0x269/0x430 net/ipv4/ip_fragment.c:660 ops_init+0xb9/0x6b0 net/core/net_namespace.c:136 setup_net+0x5d1/0xc50 net/core/net_namespace.c:339 copy_net_ns+0x4ee/0x8e0 net/core/net_namespace.c:491 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x449/0x920 kernel/fork.c:3444 __do_sys_unshare kernel/fork.c:3515 [inline] __se_sys_unshare kernel/fork.c:3513 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:3513 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8868a8d727 Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 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:00007ffc80abab68 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007ffc80abb1a8 RCX: 00007f8868a8d727 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003 R13: 00007ffc80abac40 R14: 00007f8868bac9d8 R15: 000000000000000c --- 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup