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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 12605C4320A for ; Thu, 5 Aug 2021 00:31:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E81D86109F for ; Thu, 5 Aug 2021 00:31:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229991AbhHEAbc (ORCPT ); Wed, 4 Aug 2021 20:31:32 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:44929 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236130AbhHEAbc (ORCPT ); Wed, 4 Aug 2021 20:31:32 -0400 Received: by mail-il1-f198.google.com with SMTP id m12-20020a056e021c2cb029022262095ea1so1807550ilh.11 for ; Wed, 04 Aug 2021 17:31:18 -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=TzhBp9lwKEy0vU08GWUBMtKPPyabEbnU7H1ncbPlilY=; b=SQd8omXQ4DXGb1cMsUt0cV78FCzWK5RkqWObAH6O24iTDr/vgjSDXQ3E6euTI6G0z9 SYn2vEgvLwt63wdnulyh3EAHfrGauY6YX/Zi+utPvjL2PNDA9SfELvQvTkItAo2T76kr 1MZmnVvocUFqGlr/2lrjPwFacMS1Z8PeGUBPUw93Y4Gr5P9+FZXE1NMZUvkQlIKT/eMn RipbBm+nu5A1opkr0sYUWHDcotcbKwaj4TO1iqsopFN/zvDdhJCS/nmFSK2T+Tgf2kuW M5aSf6MDFoKVz1xpyMWj9TxROBT96qP3rdaJNZG4Ccaqcd5ElnWd/8WXEXdMrjU/Y3Xp N2bA== X-Gm-Message-State: AOAM5305tBJ0F/VMRKxeVcxfT6YpHHoCc2YOHvc5JwcmncQDC728Q/e4 9qAlBa9qb2o+OSVQufnbNBoFHgH6dy0v5IruekHBljywE3fc X-Google-Smtp-Source: ABdhPJzg2Oo0b/7zSDsHoqoXsBjybiMLrIObPvfasJjZaMXlkxAARHGfJl71xxYAAew6Vha8WVoW60x5tBf5pyLdzNrqBH2tdsQs MIME-Version: 1.0 X-Received: by 2002:a05:6638:35aa:: with SMTP id v42mr1956961jal.21.1628123477537; Wed, 04 Aug 2021 17:31:17 -0700 (PDT) Date: Wed, 04 Aug 2021 17:31:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000877ae505c8c5092d@google.com> Subject: [syzbot] WARNING in netlink_sock_destruct From: syzbot To: 0x7f454c46@gmail.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, dsahern@kernel.org, fw@strlen.de, johannes.berg@intel.com, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.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: f3438b4c4e69 Merge tag '5.14-rc3-smb3-fixes' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=127416d4300000 kernel config: https://syzkaller.appspot.com/x/.config?x=bfd78f4abd4edaa6 dashboard link: https://syzkaller.appspot.com/bug?extid=987e85fbd9c71706c130 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+987e85fbd9c71706c130@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1042 at net/netlink/af_netlink.c:410 netlink_sock_destruct+0x230/0x2b0 net/netlink/af_netlink.c:410 Modules linked in: CPU: 0 PID: 1042 Comm: syz-executor.0 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:netlink_sock_destruct+0x230/0x2b0 net/netlink/af_netlink.c:410 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8a 00 00 00 48 83 bd d8 04 00 00 00 75 15 5b 5d 41 5c e9 a5 3a 22 fa e8 a0 3a 22 fa <0f> 0b e9 68 ff ff ff e8 94 3a 22 fa 0f 0b 5b 5d 41 5c e9 89 3a 22 RSP: 0018:ffffc90000007d90 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000407 RCX: 0000000000000100 RDX: ffff88808faa8000 RSI: ffffffff875360c0 RDI: 0000000000000003 RBP: ffff888000170000 R08: 0000000000000000 R09: ffff88800017020b R10: ffffffff87536027 R11: 0000000000000000 R12: ffff888000170208 R13: ffff888000170030 R14: 0000000000000002 R15: ffff888000170688 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f552db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002e826000 CR3: 00000000938ef000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sk_destruct+0x4b/0x900 net/core/sock.c:1900 sk_destruct+0xbd/0xe0 net/core/sock.c:1944 __sk_free+0xef/0x3d0 net/core/sock.c:1955 sk_free+0x78/0xa0 net/core/sock.c:1966 deferred_put_nlk_sk+0x151/0x2f0 net/netlink/af_netlink.c:740 rcu_do_batch kernel/rcu/tree.c:2550 [inline] rcu_core+0x7ab/0x1380 kernel/rcu/tree.c:2785 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 do_softirq.part.0+0xde/0x130 kernel/softirq.c:459 do_softirq kernel/softirq.c:451 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:383 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:757 [inline] __dev_queue_xmit+0x1b04/0x3620 net/core/dev.c:4312 __netlink_deliver_tap_skb net/netlink/af_netlink.c:303 [inline] __netlink_deliver_tap net/netlink/af_netlink.c:321 [inline] netlink_deliver_tap+0x9b5/0xbc0 net/netlink/af_netlink.c:334 netlink_deliver_tap_kernel net/netlink/af_netlink.c:343 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x5e5/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:723 sock_no_sendpage+0xf3/0x130 net/core/sock.c:2959 kernel_sendpage.part.0+0x1a0/0x340 net/socket.c:3673 kernel_sendpage net/socket.c:3670 [inline] sock_sendpage+0xe5/0x140 net/socket.c:1002 pipe_to_sendpage+0x2ad/0x380 fs/splice.c:364 splice_from_pipe_feed fs/splice.c:418 [inline] __splice_from_pipe+0x43e/0x8a0 fs/splice.c:562 splice_from_pipe fs/splice.c:597 [inline] generic_splice_sendpage+0xd4/0x140 fs/splice.c:746 do_splice_from fs/splice.c:767 [inline] do_splice+0xb7e/0x1960 fs/splice.c:1079 __do_splice+0x134/0x250 fs/splice.c:1144 __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice fs/splice.c:1332 [inline] __ia32_sys_splice+0x195/0x250 fs/splice.c:1332 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f54549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f552d5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 000000000004ffe0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 --- 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.