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=-2.6 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY autolearn=unavailable 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 1D733C33C8C for ; Tue, 7 Jan 2020 17:28:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F392620678 for ; Tue, 7 Jan 2020 17:28:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728378AbgAGR2K (ORCPT ); Tue, 7 Jan 2020 12:28:10 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:44651 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728211AbgAGR2K (ORCPT ); Tue, 7 Jan 2020 12:28:10 -0500 Received: by mail-il1-f199.google.com with SMTP id h87so111726ild.11 for ; Tue, 07 Jan 2020 09:28:10 -0800 (PST) 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:in-reply-to:message-id:subject :from:to; bh=zcJOkvouZPbSRqYxxbEiilRTbfXGpDRuJVTCWHOU3cc=; b=D5oFJpooa1ZfuwsmKA/zJ3/fsZ+ucJS+PY9QXABOSWSBRXQwJlE2wACIwQAfeOVto8 BofzgdcShyaRf3Kiy7oiwHziaBqbmHvA8cxnnzlXXZWb2AV6pl+8yeQCqfvbGNgfEudk gPaLX2Nl7sQnLrFwuVTFt9rkyaSWRSHPdUtq8WkzTbRBoCBAtE+3RoOgBjTCvbDOvdUG lw8KcU2asIUPLxGA3pprFDhz9xVCLp3dRK36D9CmOSFkhjzkhSXP4GFLIM+m2MD9WOli YAebycG2hqnpBEy+QSHBWBvtNbgyEargZjc2OUVMGLe/gQh1Z6xDpjApPWbQdzB1Yo4e 6vrg== X-Gm-Message-State: APjAAAW7eC1D71AMYFypaIjIoUzzFYqXckhhvT3hDyk9+nOe8cyz+b7i +poxwkflDZ/dOji+YxYbPQfjoPh627xUVGjfXPnEDf7/otlk X-Google-Smtp-Source: APXvYqw6q1hvmsYoBbeSDp7ozskflEF0SobE3NYgog1aSsfBxaHfqvjZC5bqnj3Ka3vZAJBdMI18ryTdQVohc3b78aH9yEBHzYoI MIME-Version: 1.0 X-Received: by 2002:a02:ca10:: with SMTP id i16mr613269jak.10.1578418089724; Tue, 07 Jan 2020 09:28:09 -0800 (PST) Date: Tue, 07 Jan 2020 09:28:09 -0800 In-Reply-To: <000000000000a347ef059b8ee979@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008b914b059b9019d2@google.com> Subject: Re: general protection fault in hash_ipportnet4_uadt From: syzbot To: allison@lohutok.net, coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, info@metux.net, jeremy@azazel.net, kadlec@netfilter.org, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: c101fffc Merge tag 'mlx5-fixes-2020-01-06' of git://git.ke.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=13f4f3c1e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=f2f3ef188b7e16cf dashboard link: https://syzkaller.appspot.com/bug?extid=34bd2369d38707f3f4a7 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b35ec6e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13044076e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+34bd2369d38707f3f4a7@syzkaller.appspotmail.com kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9656 Comm: syz-executor756 Not tainted 5.5.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 net/netfilter/ipset/ip_set_hash_ipportnet.c:173 Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2c RSP: 0018:ffffc90001ee7150 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc90001ee7320 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff867e4e78 RDI: ffff8880a7f08070 RBP: ffffc90001ee72b8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 R13: 0000000002000000 R14: ffffc90001ee7220 R15: ffff8880a4c3a400 FS: 0000000000e4b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000446 CR3: 000000009e154000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_set_utest+0x55b/0x890 net/netfilter/ipset/ip_set_core.c:1867 nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440839 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffde8ed0ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440839 RDX: 0000000000000002 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8 R10: 000000000000204e R11: 0000000000000246 R12: 00000000004020c0 R13: 0000000000402150 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 4497e0a4dc04971d ]--- RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 net/netfilter/ipset/ip_set_hash_ipportnet.c:173 Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2c RSP: 0018:ffffc90001ee7150 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc90001ee7320 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff867e4e78 RDI: ffff8880a7f08070 RBP: ffffc90001ee72b8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 R13: 0000000002000000 R14: ffffc90001ee7220 R15: ffff8880a4c3a400 FS: 0000000000e4b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000446 CR3: 000000009e154000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400