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 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 5735BC10F13 for ; Sun, 14 Apr 2019 16:48:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21F3E2084E for ; Sun, 14 Apr 2019 16:48:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727201AbfDNQsH (ORCPT ); Sun, 14 Apr 2019 12:48:07 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:41103 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726159AbfDNQsG (ORCPT ); Sun, 14 Apr 2019 12:48:06 -0400 Received: by mail-it1-f200.google.com with SMTP id m128so13787602itm.6 for ; Sun, 14 Apr 2019 09:48:06 -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=gp7DxYFgEXvtYebLYvfri0HqBz4so8qAizsohbVZgwg=; b=nZ9e2qbwDp6OC+plsF5UlsQZ5mv90gZNJwuy5mGAoUWLR3fe1IEhojOZL1ZfE07ZJh GoFn7tZVvUzi/HWxGh2I3Eqm6Y2vzcjcZB0D1fA6j/ryBvXE1eD3I64TcW0UBWvtzF0g RAlokxSyZ+QdZA0gsH5si38Eu/+tCMG0UYsMG32OIQW/11KhgSxff0+gBhC67tep/p4i VJxtQk+SnHSSg9iMvgKAC9alpTNrsmQcVw3kFSE1F9Limaem/ErIZZud4Pn3E/Nl6nNz gqc+Clg+YLCAQDcCHHiPn7s2a704sLI2J8nMpl99gRJZ3FYTWUq/RvdfdODtpqhf8a8+ EU2g== X-Gm-Message-State: APjAAAXd1Z9gO3kDR4LcCy3XALfMkl47/nydrJddwBKSQfm3IyK8+imz jBdwMQuhWzdg0TWRm2abIjUDbPy7QTTvRJN6WcA186LDgZHv X-Google-Smtp-Source: APXvYqxkYbDR0IEYusgdi0OvnOasMZZvTZfiC29P2wKCT6/pJv6ZEJ6cFsNlaIIGb4O31CG/2mUwrx1e9M/3Ll5/KvGKwaf5rPiR MIME-Version: 1.0 X-Received: by 2002:a24:5c12:: with SMTP id q18mr5564898itb.13.1555260485816; Sun, 14 Apr 2019 09:48:05 -0700 (PDT) Date: Sun, 14 Apr 2019 09:48:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ca5ede0586804c42@google.com> Subject: BUG: corrupted list in hsr_prune_nodes From: syzbot To: arvid.brodin@alten.se, davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes 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: c342dc10 bpf: refactor "check_reg_arg" to eliminate code r.. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=10a8a2f3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=94c460c3e4cd188a dashboard link: https://syzkaller.appspot.com/bug?extid=99ad9e40137a83c70ee3 compiler: gcc (GCC) 9.0.0 20181231 (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+99ad9e40137a83c70ee3@syzkaller.appspotmail.com list_del corruption. next->prev should be ffff88809b45c240, but was ffff8880a0202900 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:54! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13874 Comm: syz-executor.0 Not tainted 5.1.0-rc4+ #85 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold+0x48/0x4f lib/list_debug.c:54 Code: e8 00 cf 28 fe 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 a1 a1 87 e8 ec ce 28 fe 0f 0b 4c 89 f6 48 c7 c7 c0 a1 a1 87 e8 db ce 28 fe <0f> 0b 90 90 90 90 90 55 48 89 e5 41 54 53 48 89 fb 48 c7 c7 60 98 RSP: 0018:ffff8880ae807c80 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffffffffffd0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815affc6 RDI: ffffed1015d00f82 RBP: ffff8880ae807c98 R08: 0000000000000054 R09: ffffed1015d05011 R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffff88806f59b260 R13: ffff88806f59b260 R14: ffff88809b45c240 R15: 0000000000000000 FS: 00007fa430e01700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30724000 CR3: 0000000060d3e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del_rcu include/linux/rculist.h:130 [inline] hsr_prune_nodes+0x399/0x9d0 net/hsr/hsr_framereg.c:402 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1362 [inline] __run_timers kernel/time/timer.c:1681 [inline] __run_timers kernel/time/timer.c:1649 [inline] run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694 __do_softirq+0x266/0x95a kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:list_lru_count_one+0x2e/0x380 mm/list_lru.c:189 Code: 41 56 41 55 49 89 fd 41 54 49 89 d4 53 48 63 de e8 d7 97 d6 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 27 03 00 00 48 c1 e3 07 49 03 5d 00 e8 1f 44 c4 ff e8 aa 97 RSP: 0018:ffff888097d178c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005df3000 RDX: 1ffff1101316ba41 RSI: ffffffff8199f729 RDI: ffff888098b5d208 RBP: ffff888097d178e0 R08: ffff8880a9366480 R09: 0000000000000002 R10: ffffed1015d05bbf R11: ffff8880ae82ddfb R12: ffff88806fc38380 R13: ffff888098b5d208 R14: ffff888097d17a20 R15: ffff888097d17a24 list_lru_shrink_count include/linux/list_lru.h:122 [inline] super_cache_count+0x1a8/0x2e0 fs/super.c:147 do_shrink_slab+0x10e/0xa80 mm/vmscan.c:469 shrink_slab_memcg mm/vmscan.c:616 [inline] shrink_slab+0x36a/0x5e0 mm/vmscan.c:688 shrink_node+0x552/0x1570 mm/vmscan.c:2724 shrink_zones mm/vmscan.c:2953 [inline] do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:3015 try_to_free_mem_cgroup_pages+0x2dd/0xa30 mm/vmscan.c:3319 reclaim_high.constprop.0+0xb3/0x100 mm/memcontrol.c:2152 mem_cgroup_handle_over_high+0x8e/0x130 mm/memcontrol.c:2177 tracehook_notify_resume include/linux/tracehook.h:190 [inline] exit_to_usermode_loop+0x1ee/0x2c0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458c29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa430e00c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000003 RBX: 0000000000000005 RCX: 0000000000458c29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa430e016d4 R13: 00000000004c54b5 R14: 00000000004d9698 R15: 00000000ffffffff Modules linked in: ---[ end trace e4b315486d1a6405 ]--- RIP: 0010:__list_del_entry_valid.cold+0x48/0x4f lib/list_debug.c:54 Code: e8 00 cf 28 fe 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 a1 a1 87 e8 ec ce 28 fe 0f 0b 4c 89 f6 48 c7 c7 c0 a1 a1 87 e8 db ce 28 fe <0f> 0b 90 90 90 90 90 55 48 89 e5 41 54 53 48 89 fb 48 c7 c7 60 98 RSP: 0018:ffff8880ae807c80 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffffffffffd0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815affc6 RDI: ffffed1015d00f82 RBP: ffff8880ae807c98 R08: 0000000000000054 R09: ffffed1015d05011 R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffff88806f59b260 R13: ffff88806f59b260 R14: ffff88809b45c240 R15: 0000000000000000 FS: 00007fa430e01700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30724000 CR3: 0000000060d3e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 --- 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.