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=-0.4 required=3.0 tests=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 810CEC433FF for ; Sat, 10 Aug 2019 08:23:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5849C2166E for ; Sat, 10 Aug 2019 08:23:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726209AbfHJIXH (ORCPT ); Sat, 10 Aug 2019 04:23:07 -0400 Received: from mail-ot1-f72.google.com ([209.85.210.72]:53283 "EHLO mail-ot1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id 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MIME-Version: 1.0 X-Received: by 2002:a5e:9319:: with SMTP id k25mr26750905iom.137.1565425386362; Sat, 10 Aug 2019 01:23:06 -0700 (PDT) Date: Sat, 10 Aug 2019 01:23:06 -0700 In-Reply-To: <000000000000f5d619058faea744@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000139ca6058fbf000d@google.com> Subject: Re: general protection fault in tls_write_space From: syzbot To: aviadye@mellanox.com, borisp@mellanox.com, daniel@iogearbox.net, davejwatson@fb.com, davem@davemloft.net, jakub.kicinski@netronome.com, john.fastabend@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, oss-drivers@netronome.com, syzkaller-bugs@googlegroups.com, willemb@google.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: ca497fb6 taprio: remove unused variable 'entry_list_policy' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=109f3802600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d4cf1ffb87d590d7 dashboard link: https://syzkaller.appspot.com/bug?extid=dcdc9deefaec44785f32 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11c78cd2600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+dcdc9deefaec44785f32@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: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0-rc3+ #125 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tls_write_space+0x51/0x170 net/tls/tls_main.c:239 Code: c1 ea 03 80 3c 02 00 0f 85 26 01 00 00 49 8b 9c 24 b0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 6a 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 df 00 00 00 RSP: 0018:ffff8880a98b74c8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff860a27a2 RDX: 000000000000000d RSI: ffffffff862c86c1 RDI: 000000000000006a RBP: ffff8880a98b74e0 R08: ffff8880a98a2240 R09: fffffbfff167c289 R10: fffffbfff167c288 R11: ffffffff8b3e1447 R12: ffff8880a4de41c0 R13: ffff8880a4de45b8 R14: 000000000000000a R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000008c9d1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_new_space net/ipv4/tcp_input.c:5151 [inline] tcp_check_space+0x191/0x760 net/ipv4/tcp_input.c:5162 tcp_data_snd_check net/ipv4/tcp_input.c:5172 [inline] tcp_rcv_state_process+0xe24/0x4e48 net/ipv4/tcp_input.c:6303 tcp_v6_do_rcv+0x7d7/0x12c0 net/ipv6/tcp_ipv6.c:1381 tcp_v6_rcv+0x31f1/0x3500 net/ipv6/tcp_ipv6.c:1588 ip6_protocol_deliver_rcu+0x2fe/0x1660 net/ipv6/ip6_input.c:397 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:438 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:447 dst_input include/net/dst.h:442 [inline] ip6_rcv_finish+0x1de/0x2f0 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:5006 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5120 process_backlog+0x206/0x750 net/core/dev.c:5951 napi_poll net/core/dev.c:6388 [inline] net_rx_action+0x4d6/0x1080 net/core/dev.c:6456 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace c21a83505707bb9d ]--- RIP: 0010:tls_write_space+0x51/0x170 net/tls/tls_main.c:239 Code: c1 ea 03 80 3c 02 00 0f 85 26 01 00 00 49 8b 9c 24 b0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 6a 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 df 00 00 00 RSP: 0018:ffff8880a98b74c8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff860a27a2 RDX: 000000000000000d RSI: ffffffff862c86c1 RDI: 000000000000006a RBP: ffff8880a98b74e0 R08: ffff8880a98a2240 R09: fffffbfff167c289 R10: fffffbfff167c288 R11: ffffffff8b3e1447 R12: ffff8880a4de41c0 R13: ffff8880a4de45b8 R14: 000000000000000a R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000008c9d1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400