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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 8582EC43441 for ; Wed, 21 Nov 2018 04:28:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D07D2087E for ; Wed, 21 Nov 2018 04:28:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4D07D2087E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727247AbeKUPAt (ORCPT ); Wed, 21 Nov 2018 10:00:49 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:52860 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727010AbeKUPAt (ORCPT ); Wed, 21 Nov 2018 10:00:49 -0500 Received: by mail-io1-f69.google.com with SMTP id h7so4144473iof.19 for ; Tue, 20 Nov 2018 20:28:04 -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:message-id:subject:from:to; bh=VDLroSLjyPR0DtQ5ZuGtkmT92SznokM22QD+Ag5ejEI=; b=aRhZ8Rb+kt+zCqxIrqxt9SKDZr/THNJpeLkzaAjvzB+Hhppwy4AIV/DSqjIchLQttm h27m02hI47qLdWDLzYJ4iW2MLlItPApRfwaIvIQl/5TLQ8NsdKCuBEiDnMI7hOTJ0c3c yqkNWMjGI5MwlZKJUc07EWMLLwiZOfC3jF1Tnl8Q4v9ofb8RZz4hbBJDLhXb3f2Gq6kh T9QJuYN1w9enCWE/QbeXLVDlo/e3dzcD/4M3q0wpVnGEzaEURU6Cohxwc2eXxPhi/mw3 D5fDrb3BKowtQ4PgAS+LhsILGW/fj5+IWQ9qhQZMewSsOc59bh+Qr4A1RNcZfbwlYtLg UAKw== X-Gm-Message-State: AA+aEWZOzpnyZmd7MT7yoIAi2eq68Yp70WjSdT9rMTqnAX8NR/u9zSk5 zzm2krsMaLqebmIw9Y/J9yS9tojZs+Ep203VVitU5vVZWiRc X-Google-Smtp-Source: AJdET5foDGeVwM6kvtLD7lClpFYbJgvJQrLZ8FNAOBKV+udoIBmX7tw4OXMMfzy5iqH/Ujp2lwMfyncY1AF3AtXKasQz2EEXMBS6 MIME-Version: 1.0 X-Received: by 2002:a24:59d1:: with SMTP id p200-v6mr3602646itb.10.1542774483891; Tue, 20 Nov 2018 20:28:03 -0800 (PST) Date: Tue, 20 Nov 2018 20:28:03 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000014c430057b252d70@google.com> Subject: general protection fault in sctp_sched_dequeue_common 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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: cfc6731d2f79 Merge branch 'sctp-add-subscribe-per-asoc-and.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=14fc234d400000 kernel config: https://syzkaller.appspot.com/x/.config?x=73e2bc0cb6463446 dashboard link: https://syzkaller.appspot.com/bug?extid=e33a3a138267ca119c7d compiler: gcc (GCC) 8.0.1 20180413 (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+e33a3a138267ca119c7d@syzkaller.appspotmail.com netlink: 'syz-executor1': attribute type 39 has an invalid length. IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. 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: 4030 Comm: syz-executor5 Not tainted 4.20.0-rc3+ #304 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d RSP: 0018:ffff8881c1bfea48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881bb175618 RCX: ffffc9001006b000 RDX: 0000000000000000 RSI: ffffffff8752c823 RDI: ffff8881bb175620 RBP: ffff8881c1bfea60 R08: ffff88818dc04200 R09: ffff8881c1bff488 R10: ffffed103837feb6 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881cb4d8e20 R15: dffffc0000000000 FS: 00007f34b0944700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ae0ed0 CR3: 00000001cb898000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del_init include/linux/list.h:159 [inline] sctp_sched_dequeue_common+0xab/0x610 net/sctp/stream_sched.c:267 sctp_sched_fcfs_dequeue+0x18d/0x280 net/sctp/stream_sched.c:90 sctp_outq_dequeue_data net/sctp/outqueue.c:90 [inline] sctp_outq_flush_data net/sctp/outqueue.c:1079 [inline] sctp_outq_flush+0x13e2/0x34f0 net/sctp/outqueue.c:1205 sctp_outq_uncork+0x6a/0x80 net/sctp/outqueue.c:772 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline] sctp_do_sm+0x5ff/0x7180 net/sctp/sm_sideeffect.c:1191 sctp_primitive_SEND+0xa0/0xd0 net/sctp/primitive.c:178 sctp_sendmsg_to_asoc+0xa0b/0x1a10 net/sctp/socket.c:1955 sctp_sendmsg+0x13c2/0x1da0 net/sctp/socket.c:2113 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 sock_write_iter+0x35e/0x5c0 net/socket.c:900 call_write_iter include/linux/fs.h:1857 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f34b0943c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000034000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f34b09446d4 R13: 00000000004c5cde R14: 00000000004da090 R15: 00000000ffffffff Modules linked in: ---[ end trace 23757f22491d2e93 ]--- RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d kobject: 'loop0' (00000000e65c44e1): kobject_uevent_env kobject: 'loop0' (00000000e65c44e1): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 0018:ffff8881c1bfea48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881bb175618 RCX: ffffc9001006b000 kobject: 'rx-0' (000000005994716d): kobject_cleanup, parent 00000000ba7aa131 RDX: 0000000000000000 RSI: ffffffff8752c823 RDI: ffff8881bb175620 kobject: 'loop4' (000000004d250bad): kobject_uevent_env kobject: 'rx-0' (000000005994716d): auto cleanup 'remove' event kobject: 'loop4' (000000004d250bad): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (000000005994716d): kobject_uevent_env RBP: ffff8881c1bfea60 R08: ffff88818dc04200 R09: ffff8881c1bff488 R10: ffffed103837feb6 R11: 0000000000000003 R12: 0000000000000000 kobject: 'rx-0' (000000005994716d): kobject_uevent_env: uevent_suppress caused the event to drop! R13: 0000000000000000 R14: ffff8881cb4d8e20 R15: dffffc0000000000 kobject: 'rx-0' (000000005994716d): auto cleanup kobject_del FS: 00007f34b0944700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 kobject: 'rx-0' (000000005994716d): calling ktype release CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001cb898000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'rx-0': free name kobject: 'loop0' (00000000e65c44e1): kobject_uevent_env kobject: 'tx-3' (00000000a24965cd): kobject_cleanup, parent 00000000ba7aa131 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'tx-3' (00000000a24965cd): auto cleanup 'remove' event kobject: 'loop0' (00000000e65c44e1): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-3' (00000000a24965cd): kobject_uevent_env kobject: 'tx-3' (00000000a24965cd): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-3' (00000000a24965cd): auto cleanup kobject_del --- This bug is generated by a bot. 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