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 CAA36C18E5A for ; Tue, 10 Mar 2020 22:25:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D24B222C3 for ; Tue, 10 Mar 2020 22:25:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727852AbgCJWZQ (ORCPT ); Tue, 10 Mar 2020 18:25:16 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:43527 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727797AbgCJWZO (ORCPT ); Tue, 10 Mar 2020 18:25:14 -0400 Received: by mail-il1-f198.google.com with SMTP id t9so875ilk.10 for ; Tue, 10 Mar 2020 15:25:14 -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=/mGXnhXZurO4CREgFpYtZhovCFB8iVw1jhK1uRbKELA=; b=GNoroo3lXgVEEhSoQHWRF/8wcLJ3bK3TDO5KWezpMqI6akwrLuJt8QpMwTcsjM6TeO +/weMiPU40tBY/KbMBI7Dkf6Y11zv/WYTyrewLYZCs1QAz0T734hkdFX/mxPVZKxwUjI H7kl83d0MlZmDXujJXw2KkOTSKD7liXenuh1v9YQ+s/snoT5VawZPVF+FacWZAtmA8hj pcXkDoixp5dmQ6FZ/7WLeJnJzK9tiMgXglxA6yDWCkELDA+AScUC4NKFjkoPFKXsSQ7c uZRs2H0FzCE0wA9QxHwsK7UXN818dAH5kvR6y4ND4XbgLI0Xzft6hH9ct3cbHmRlgnLm S3ug== X-Gm-Message-State: ANhLgQ3D8Iz1DvNRiEeIJ5FnXTXhVfg2SebVeLqZtYNB67+IrR6NeBVX ip1RH0CfgoG95BTYKSXN4oxObYSP9JYe/3IbRkyLRu1k623i X-Google-Smtp-Source: ADFU+vuSCDa6sFDmriiZ0a0XGIM9FkUJKlP1Z4fwu89Hj8u7d6sDDMEcvTfI7GrxVA1ivCG/v+ATvnkrzGPr+j+rOHWgcOW0QdhF MIME-Version: 1.0 X-Received: by 2002:a5e:9b09:: with SMTP id j9mr240391iok.114.1583879113910; Tue, 10 Mar 2020 15:25:13 -0700 (PDT) Date: Tue, 10 Mar 2020 15:25:13 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f3b11305a0879723@google.com> Subject: WARNING in kfree (2) From: syzbot To: davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.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 crash on: HEAD commit: 2c523b34 Linux 5.6-rc5 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=154b5181e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=c2e311dba9a02ba9 dashboard link: https://syzkaller.appspot.com/bug?extid=50ef5e5e5ea5f812f0c2 compiler: gcc (GCC) 9.0.0 20181231 (experimental) userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15d8ae91e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+50ef5e5e5ea5f812f0c2@syzkaller.appspotmail.com ------------[ cut here ]------------ virt_to_cache: Object is not a Slab page! WARNING: CPU: 1 PID: 9436 at mm/slab.h:473 virt_to_cache mm/slab.h:473 [inline] WARNING: CPU: 1 PID: 9436 at mm/slab.h:473 kfree+0x1cf/0x2b0 mm/slab.c:3749 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9436 Comm: syz-executor.0 Not tainted 5.6.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:virt_to_cache mm/slab.h:473 [inline] RIP: 0010:kfree+0x1cf/0x2b0 mm/slab.c:3749 Code: 51 ff e9 67 fe ff ff 80 3d 8a a4 b2 08 00 75 1c 48 c7 c6 40 52 15 88 48 c7 c7 e8 03 26 89 c6 05 73 a4 b2 08 01 e8 b9 9f 95 ff <0f> 0b f6 c7 02 75 6b 48 83 3d 52 2e c5 07 00 0f 85 4e ff ff ff 0f RSP: 0018:ffffc900020e7030 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000282 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815bf4f1 RDI: fffff5200041cdf8 RBP: ffffffff8c3f7080 R08: ffff88808e97c600 R09: ffffed1015ce45c9 R10: ffffed1015ce45c8 R11: ffff8880ae722e43 R12: ffffffff8628c202 R13: dffffc0000000000 R14: ffff8880a0069c10 R15: 0000000000000000 tcf_exts_destroy+0x62/0xc0 net/sched/cls_api.c:3002 tcf_exts_change+0xf4/0x150 net/sched/cls_api.c:3059 tcindex_set_parms+0xed8/0x1a00 net/sched/cls_tcindex.c:456 tcindex_change+0x203/0x2e0 net/sched/cls_tcindex.c:518 tc_new_tfilter+0xa59/0x20b0 net/sched/cls_api.c:2103 rtnetlink_rcv_msg+0x810/0xad0 net/core/rtnetlink.c:5427 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2478 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0xec/0x1b0 net/socket.c:2430 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x270/0xe8f arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches