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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC733C4332F for ; Fri, 18 Nov 2022 10:38:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241002AbiKRKif (ORCPT ); Fri, 18 Nov 2022 05:38:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230042AbiKRKie (ORCPT ); Fri, 18 Nov 2022 05:38:34 -0500 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F80BA181 for ; Fri, 18 Nov 2022 02:38:32 -0800 (PST) Received: by mail-il1-f197.google.com with SMTP id j7-20020a056e02154700b003025b3c0ea3so3106830ilu.10 for ; Fri, 18 Nov 2022 02:38:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=B7rT5D+HD/NGgTOqEGVfQWh3AC4EcDUMZJA/cRRvNis=; b=IzQI5WfCZuTTxD/zXSn4ddco/+LrBFF9da7Sc0+m3254jWhm4HuCq7vYZmwtpZw/5y 1ZpxZnHphLuwOJ0uaQSG+d4letqLeJpnLTKiZr7nModYUatlxyJmMqHENPwL0eQ+FEig 7jkiCcRbXiaPm9L/BZoRHztBlRiznvIGC6pkFKyF7X3nCzfFfNrEt7N7CstrVPXzUUOu +8wIosVPWXvyr6/EjqQMTNPgzhwHFAqmC622Ld8Wsj0X1ZLx/JTt06aCvvKjIwd9MvD3 CHocVX4Z/oC8ikWvSolktwj6Qc72bLhW8WaTkKoIQt22qPMpuuBPTFRIADYI07R4E+VA +PvA== X-Gm-Message-State: ANoB5plQ72/n4omXF3HsbdaL91cITpMPV/WTPmWR1nh1zrrcAPbzQPu1 fSuBNvKPSfgzDAIyzx9XFpr1DLc4hs1P0nJe6RCvptqbJ7BN X-Google-Smtp-Source: AA0mqf4JOEguQPyJ2ydkLVLZWq5JhAmNtCDXzMr1MqSY2DNseMpscjjgZ9VATzrrKEMlVDX8MmozUo0fZ2FhavA2UaD2jQa7hX2W MIME-Version: 1.0 X-Received: by 2002:a05:6638:4419:b0:375:2b75:93d with SMTP id bp25-20020a056638441900b003752b75093dmr2797008jab.235.1668767911809; Fri, 18 Nov 2022 02:38:31 -0800 (PST) Date: Fri, 18 Nov 2022 02:38:31 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000098976a05edbc4ebc@google.com> Subject: [syzbot] BUG: corrupted list in __netif_napi_del (3) From: syzbot To: ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, john.fastabend@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 68d268d08931 Merge branch 'net-try_cmpxchg-conversions' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=14299759880000 kernel config: https://syzkaller.appspot.com/x/.config?x=893a728fb1a6b263 dashboard link: https://syzkaller.appspot.com/bug?extid=f39fd41c33711aecf0c1 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/399b143cdec5/disk-68d268d0.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cf1a3fd0fc27/vmlinux-68d268d0.xz kernel image: https://storage.googleapis.com/syzbot-assets/5649c9fe4b21/bzImage-68d268d0.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f39fd41c33711aecf0c1@syzkaller.appspotmail.com list_del corruption, ffff88804eace160->prev is LIST_POISON2 (dead000000000122) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:56! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4247 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-01115-g68d268d08931 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__list_del_entry_valid.cold+0x37/0x72 lib/list_debug.c:56 Code: e8 d2 62 f0 ff 0f 0b 48 89 ee 48 c7 c7 80 10 a8 8a e8 c1 62 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 40 11 a8 8a e8 ad 62 f0 ff <0f> 0b 48 89 ee 48 c7 c7 20 10 a8 8a e8 9c 62 f0 ff 0f 0b 4c 89 ea RSP: 0018:ffffc9000a116ed0 EFLAGS: 00010282 RAX: 000000000000004e RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8165772c RDI: fffff52001422dcc RBP: ffff88804eace160 R08: 000000000000004e R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: dead000000000122 R13: ffff88804eab6050 R14: ffff88804eace000 R15: ffff88804eace000 FS: 00007fa8ab74e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002040f030 CR3: 000000007efb8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:134 [inline] list_del_rcu include/linux/rculist.h:157 [inline] __netif_napi_del.part.0+0x118/0x530 net/core/dev.c:6458 __netif_napi_del+0x40/0x50 net/core/dev.c:6454 veth_napi_del_range+0xcd/0x560 drivers/net/veth.c:1041 veth_napi_del drivers/net/veth.c:1055 [inline] veth_close+0x164/0x500 drivers/net/veth.c:1385 __dev_close_many+0x1b6/0x2e0 net/core/dev.c:1501 __dev_close net/core/dev.c:1513 [inline] __dev_change_flags+0x2ce/0x750 net/core/dev.c:8528 dev_change_flags+0x97/0x170 net/core/dev.c:8602 do_setlink+0x9f1/0x3bb0 net/core/rtnetlink.c:2827 rtnl_group_changelink net/core/rtnetlink.c:3344 [inline] __rtnl_newlink+0xb90/0x1840 net/core/rtnetlink.c:3600 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3637 rtnetlink_rcv_msg+0x43e/0xca0 net/core/rtnetlink.c:6141 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa8aaa8b639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa8ab74e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa8aababf80 RCX: 00007fa8aaa8b639 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007fa8aaae6ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe720d839f R14: 00007fa8ab74e300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid.cold+0x37/0x72 lib/list_debug.c:56 Code: e8 d2 62 f0 ff 0f 0b 48 89 ee 48 c7 c7 80 10 a8 8a e8 c1 62 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 40 11 a8 8a e8 ad 62 f0 ff <0f> 0b 48 89 ee 48 c7 c7 20 10 a8 8a e8 9c 62 f0 ff 0f 0b 4c 89 ea RSP: 0018:ffffc9000a116ed0 EFLAGS: 00010282 RAX: 000000000000004e RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8165772c RDI: fffff52001422dcc RBP: ffff88804eace160 R08: 000000000000004e R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: dead000000000122 R13: ffff88804eab6050 R14: ffff88804eace000 R15: ffff88804eace000 FS: 00007fa8ab74e700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020513030 CR3: 000000007efb8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.