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=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 50139C433E2 for ; Mon, 31 Aug 2020 16:58:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 315B320707 for ; Mon, 31 Aug 2020 16:58:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728886AbgHaQ6u (ORCPT ); Mon, 31 Aug 2020 12:58:50 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:44400 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728777AbgHaQ6W (ORCPT ); Mon, 31 Aug 2020 12:58:22 -0400 Received: by mail-il1-f199.google.com with SMTP id j11so1560222ilr.11 for ; Mon, 31 Aug 2020 09:58:21 -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=Ve3fMaP+GgxKOYA2jQMbUsBIcbQ4arT97D2zd8YTu2Q=; b=jqJ4Bx2bevEHXz0ZBgGHhrVeu1E5pLiWWOiqfVux86lYiYR0NU7QFfDZTNwxdEYR7e B3AXucHzjenA/pHVEOk3cIQC3uw0RnTN16koAPeC422Iv7Ch9wnI6uB5fSDUiJjXgblA gCcAC/dYVlLe/E5+vTm0CAZAd9vjnxgcDn0Jw8zCMPEx3aaC8Lnqd+gZdZdwipT2qtrY 00J/mhQsY9MQPIruyZVOG1eQiduQE3WYmH0DZLzWKzXTzCbln86UJQoRxsgwOBz22sUC or6SBfC5Dk4rnX/jKY3Ns4k5OaCyH1bjQN0iq4rrIvLfJTITQ0FNmOEfcWCpZyN4qR/z E/tw== X-Gm-Message-State: AOAM532bCR9POMF8bZbudrsOmsdP5x2L+plbZR5pBGgJ6+M/za/9CR7m /cTUn9w7Al9wiQVC2yfEBFExDi3CiZk7SlkdaEYm4vJWuu/N X-Google-Smtp-Source: ABdhPJzebhMi2YVlQFv285w6irW+P0ujyzgsqNUG/Nz0LVkoTR+LISYvXb9Tq45g6gErJc3xGQPz6sdNe3TLeT7IuWRIkJdkg24k MIME-Version: 1.0 X-Received: by 2002:a05:6e02:ca3:: with SMTP id 3mr2232309ilg.227.1598893101210; Mon, 31 Aug 2020 09:58:21 -0700 (PDT) Date: Mon, 31 Aug 2020 09:58:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000054e22905ae2f4fae@google.com> Subject: WARNING in chnl_net_uninit From: syzbot To: davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, wangyunjian@huawei.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 4d41ead6 Merge tag 'block-5.9-2020-08-28' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100cf1de900000 kernel config: https://syzkaller.appspot.com/x/.config?x=5ebdb650dfa501c1 dashboard link: https://syzkaller.appspot.com/bug?extid=ef72fb13d1c081833ebe compiler: gcc (GCC) 10.1.0-syz 20200507 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+ef72fb13d1c081833ebe@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 3 PID: 11918 at net/caif/chnl_net.c:67 robust_list_del net/caif/chnl_net.c:67 [inline] WARNING: CPU: 3 PID: 11918 at net/caif/chnl_net.c:67 chnl_net_uninit+0xc9/0x2dc net/caif/chnl_net.c:380 Kernel panic - not syncing: panic_on_warn set ... CPU: 2 PID: 11918 Comm: syz-executor.1 Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:robust_list_del net/caif/chnl_net.c:67 [inline] RIP: 0010:chnl_net_uninit+0xc9/0x2dc net/caif/chnl_net.c:380 Code: 89 eb e8 3a 44 b0 f9 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 bf 01 00 00 48 81 fb 60 ba a5 8a 48 8b 2b 75 d0 e8 17 44 b0 f9 <0f> 0b 5b 5d 41 5c 41 5d e9 0a 44 b0 f9 4c 89 e3 e8 02 44 b0 f9 4c RSP: 0000:ffffc90001707070 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffffff8aa5ba60 RCX: ffffffff87c3fa72 RDX: ffff88802797d800 RSI: ffffffff87c3faf9 RDI: 0000000000000005 RBP: ffffffff8aa5ba60 R08: 0000000000000000 R09: ffffffff8a7e73e7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88805fdd6d88 R13: ffff88805fdd6000 R14: dffffc0000000000 R15: ffff888023b07f80 rollback_registered_many+0xa7a/0x1210 net/core/dev.c:9300 --- 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.