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 37ED3C3A5A1 for ; Thu, 22 Aug 2019 14:53:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09C0721848 for ; Thu, 22 Aug 2019 14:53:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388551AbfHVOxH (ORCPT ); Thu, 22 Aug 2019 10:53:07 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:36169 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388081AbfHVOxG (ORCPT ); Thu, 22 Aug 2019 10:53:06 -0400 Received: by mail-io1-f72.google.com with SMTP id i6so6661194ioi.3 for ; Thu, 22 Aug 2019 07:53:05 -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=kfIi0OSou2Ekw5QLTdZ8VtZ0z3hqSfowleVJYnTSHhc=; b=KnSLhHge5yYblw3fgPff9roNHCr4aj+ZfosEfDYA3RSb1bvVOkl0+rzSjhmFJlhODq TDipNySElVy8fgW8G5Bd+bie1TV8zypuS519NYWbRD7kNuMwxit+o+09B42IB2JYq8Mo nKtfOeXrhhamq/gSY7uFq+L/S+M2CBxGnXf7ML+QchX/rhLszC/4kbVAghmuWbh3e2nC LjEHmbAs+DXz5mR6/DK++Hk0mtOYpzPT9IkT0n/xwfNoXV1UPQfuyBnppzulpYHX78b4 aoZm5+4XeCiLl1MaVparclJsI33rE8saxgD+yfImH8jwj42QALw4M0ntNZam1IIvNScc FVlw== X-Gm-Message-State: APjAAAWW26SW4o3hoMPtxkEAGh0MogQZnYn/gv861cLPDIJ/wtxIHE+S yqkQMtoUpIspGo5IcI4MEoervaeNdJebA6OV2KUtiPm2DW42 X-Google-Smtp-Source: APXvYqw2pBMggwRHNC0lzjydaezprM8qkJSaYzg9R1+X41uK1S/e6CKOqbuqpYhbin1Rq+t39efQ14ItyMp4karQSg0YBWmMHNMl MIME-Version: 1.0 X-Received: by 2002:a5e:8e09:: with SMTP id a9mr69752ion.238.1566485585548; Thu, 22 Aug 2019 07:53:05 -0700 (PDT) Date: Thu, 22 Aug 2019 07:53:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000df5c7f0590b5d85d@google.com> Subject: general protection fault in sctp_inq_pop From: syzbot To: davem@davemloft.net, linux-kernel@vger.kernel.org, linux-sctp@vger.kernel.org, marcelo.leitner@gmail.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, syzkaller-bugs@googlegroups.com, vyasevich@gmail.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 Hello, syzbot found the following crash on: HEAD commit: 20e79a0a net: hns: add phy_attached_info() to the hns driver git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=10d6dfba600000 kernel config: https://syzkaller.appspot.com/x/.config?x=ce5e88233f2f83b0 dashboard link: https://syzkaller.appspot.com/bug?extid=4a0643a653ac375612d1 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4a0643a653ac375612d1@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: 15509 Comm: syz-executor.1 Not tainted 5.3.0-rc3+ #139 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:sctp_inq_pop+0x294/0xd80 net/sctp/inqueue.c:201 Code: 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 e3 08 00 00 49 8d 7d 02 4d 89 6c 24 60 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 4b RSP: 0018:ffff888097d9ee40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880968405d8 RCX: 0000000000000001 RDX: 0000000000005803 RSI: ffffffff86b236aa RDI: 000000000000000a RBP: ffff888097d9ee90 R08: ffff88808fd44240 R09: fffffbfff14a914f R10: fffffbfff14a914e R11: ffffffff8a548a77 R12: ffff888096840580 R13: 0000000000000008 R14: 0000000000000000 R15: ffff888097d9f478 FS: 00007f59f27b8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f40b77fd000 CR3: 0000000063e8e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sctp_endpoint_bh_rcv+0x184/0x8d0 net/sctp/endpointola.c:385 sctp_inq_push+0x1e4/0x280 net/sctp/inqueue.c:80 sctp_rcv+0x2807/0x3590 net/sctp/input.c:256 sctp6_rcv+0x17/0x30 net/sctp/ipv6.c:1049 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_sublist_rcv_finish+0x98/0x1e0 net/ipv6/ip6_input.c:84 ip6_list_rcv_finish net/ipv6/ip6_input.c:118 [inline] ip6_sublist_rcv+0x80c/0xcf0 net/ipv6/ip6_input.c:282 ipv6_list_rcv+0x373/0x4b0 net/ipv6/ip6_input.c:316 __netif_receive_skb_list_ptype net/core/dev.c:5049 [inline] __netif_receive_skb_list_core+0x1a2/0x9d0 net/core/dev.c:5087 __netif_receive_skb_list net/core/dev.c:5149 [inline] netif_receive_skb_list_internal+0x7eb/0xe60 net/core/dev.c:5244 gro_normal_list.part.0+0x1e/0xb0 net/core/dev.c:5757 gro_normal_list net/core/dev.c:5755 [inline] gro_normal_one net/core/dev.c:5769 [inline] napi_frags_finish net/core/dev.c:5782 [inline] napi_gro_frags+0xa6a/0xea0 net/core/dev.c:5855 tun_get_user+0x2e98/0x3fa0 drivers/net/tun.c:1974 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2020 call_write_iter include/linux/fs.h:1870 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015 do_writev+0x15b/0x330 fs/read_write.c:1058 __do_sys_writev fs/read_write.c:1131 [inline] __se_sys_writev fs/read_write.c:1128 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4596e1 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f59f27b7ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000010c RCX: 00000000004596e1 RDX: 0000000000000001 RSI: 00007f59f27b7c00 RDI: 00000000000000f0 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f59f27b86d4 R13: 00000000004c8783 R14: 00000000004df5a0 R15: 00000000ffffffff Modules linked in: ---[ end trace 4d09ea96a0c7705b ]--- RIP: 0010:sctp_inq_pop+0x294/0xd80 net/sctp/inqueue.c:201 Code: 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 e3 08 00 00 49 8d 7d 02 4d 89 6c 24 60 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 4b RSP: 0018:ffff888097d9ee40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880968405d8 RCX: 0000000000000001 RDX: 0000000000005803 RSI: ffffffff86b236aa RDI: 000000000000000a RBP: ffff888097d9ee90 R08: ffff88808fd44240 R09: fffffbfff14a914f R10: fffffbfff14a914e R11: ffffffff8a548a77 R12: ffff888096840580 R13: 0000000000000008 R14: 0000000000000000 R15: ffff888097d9f478 FS: 00007f59f27b8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f40b77fd000 CR3: 0000000063e8e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.