From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 114DCC4708F for ; Wed, 2 Jun 2021 16:37:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDDBB619A2 for ; Wed, 2 Jun 2021 16:37:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230196AbhFBQjS (ORCPT ); Wed, 2 Jun 2021 12:39:18 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:37680 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230099AbhFBQjK (ORCPT ); Wed, 2 Jun 2021 12:39:10 -0400 Received: by mail-il1-f199.google.com with SMTP id g12-20020a056e021a2cb02901dfc46878d8so2029716ile.4 for ; Wed, 02 Jun 2021 09:37:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=ScaWggXPBbQZ+j9iOKCUD+/Tr2hnGHxfC2G9+IXCng0=; b=INU83Zk1YjpfHQyM5lq/0ilt5elDbVnPrUc0jOTYANPYlapaFfU6/MiaykAfwGyjZJ +0tqSgaWO+VbOVjh/uuYnH3R8+2C2lsGCzs//aBp3snFQbqVZWiTpypg2upvyM9Wgpr2 wBcQcL5IyN03nUzf4sT6QmD+d9tH3KCs1oMtCZPIr8cyr/H+4zYEYfHPvZmzDYR3gBRr IfV75H6xdAFQhLe3erqajbH8jHT6iHU4Y/6Ecv5JEnBVyBnvqn94S7x8KpcSYAoiXycE 40Rw4v5f290t2NvoyI01wNi8ydv/TPncekEAbPsIuEjzElWx+a2tx9toBs24MRjtKYNC Bk2w== X-Gm-Message-State: AOAM530Gco9/dhPIDAvUuxjH1Ulan8kwplDjnjN67c91yq3Gn4wUMIwq PyVuvFQ1nkaUtTWaL8hgIS6bqwgKjuj9/dK9qRXL2a/E4GfJ X-Google-Smtp-Source: ABdhPJxAcIXnKkgcCVqanUnxxQ2yn32HsIrHELvpKVrza6Kh4f2/2nScpSkceUrWkb84Ss25ZJWsV7gLElsuqNVqA+pUtfe2fXVh MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1b83:: with SMTP id h3mr24952646ili.199.1622651846984; Wed, 02 Jun 2021 09:37:26 -0700 (PDT) Date: Wed, 02 Jun 2021 09:37:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ef07b205c3cb1234@google.com> Subject: [syzbot] general protection fault in nft_set_elem_expr_alloc From: syzbot To: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@netfilter.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 6850ec97 Merge branch 'mptcp-fixes-for-5-13' git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=1355504dd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=770708ea7cfd4916 dashboard link: https://syzkaller.appspot.com/bug?extid=ce96ca2b1d0b37c6422d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1502d517d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12bbbe13d00000 The issue was bisected to: commit 05abe4456fa376040f6cc3cc6830d2e328723478 Author: Pablo Neira Ayuso Date: Wed May 20 13:44:37 2020 +0000 netfilter: nf_tables: allow to register flowtable with no devices bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10fa1387d00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12fa1387d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=14fa1387d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ce96ca2b1d0b37c6422d@syzkaller.appspotmail.com Fixes: 05abe4456fa3 ("netfilter: nf_tables: allow to register flowtable with no devices") general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 8438 Comm: syz-executor343 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nft_set_elem_expr_alloc+0x17e/0x280 net/netfilter/nf_tables_api.c:5321 Code: 48 c1 ea 03 80 3c 02 00 0f 85 09 01 00 00 49 8b 9d c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d9 00 00 00 48 8b 5b 70 48 85 db 74 21 e8 9a bd RSP: 0018:ffffc90000fff338 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffffffff875b1e90 RDI: 0000000000000070 RBP: ffffc90000fff4a0 R08: fffffffffffff000 R09: 0000000000000000 R10: ffffffff875b1e86 R11: 0000000000000000 R12: ffff88802819f200 R13: ffff888028e11000 R14: ffffffff8dca5260 R15: ffffffff8a714120 FS: 0000000002387300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000190 CR3: 0000000019973000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_tables_newset+0x1b78/0x32a0 net/netfilter/nf_tables_api.c:4370 nfnetlink_rcv_batch+0x1788/0x25c0 net/netfilter/nfnetlink.c:510 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:631 [inline] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:649 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43f389 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdd09f0258 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f389 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 0000000000403370 R08: 0000000000000014 R09: 0000000000400488 R10: 0000000000000074 R11: 0000000000000246 R12: 0000000000403400 R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 Modules linked in: ---[ end trace dd21b65109300c05 ]--- RIP: 0010:nft_set_elem_expr_alloc+0x17e/0x280 net/netfilter/nf_tables_api.c:5321 Code: 48 c1 ea 03 80 3c 02 00 0f 85 09 01 00 00 49 8b 9d c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d9 00 00 00 48 8b 5b 70 48 85 db 74 21 e8 9a bd RSP: 0018:ffffc90000fff338 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffffffff875b1e90 RDI: 0000000000000070 RBP: ffffc90000fff4a0 R08: fffffffffffff000 R09: 0000000000000000 R10: ffffffff875b1e86 R11: 0000000000000000 R12: ffff88802819f200 R13: ffff888028e11000 R14: ffffffff8dca5260 R15: ffffffff8a714120 FS: 0000000002387300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa0ba0326c0 CR3: 0000000019973000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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 syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches