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 2BB08C433FF for ; Mon, 12 Aug 2019 10:20:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6B2C420820 for ; Mon, 12 Aug 2019 10:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727901AbfHLKUH (ORCPT ); Mon, 12 Aug 2019 06:20:07 -0400 Received: from mail-ot1-f72.google.com ([209.85.210.72]:50658 "EHLO mail-ot1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727323AbfHLKUH (ORCPT ); Mon, 12 Aug 2019 06:20:07 -0400 Received: by mail-ot1-f72.google.com with SMTP id a21so83540001otk.17 for ; Mon, 12 Aug 2019 03:20:06 -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:in-reply-to:message-id:subject :from:to; bh=F+sCkwDa9f+RxfruDpYk266w8j1SjIK4Xb0PYHWArdY=; b=SWLTcGVuC0QeZXCq3zH2mh7x9S05DOiq4CDf5CBf2H1iexzqHlx8ytMtuknJyEO2V2 Fw9lBpG/OkaMGypXjZJbPc9yM6HzMSMsyiEu7defKiG0COnZWHMDI1tRuopqmCtOKMWV 7ccYfPX8VHvAU61BfAui8NpbLISoaa+ZLjTJjtkWr3Hgdgo2WFumQHtrUXPH+2EFQHj7 UT5wKC5PtiZZ9cLVcCLnsV+mww+YUMFhChnXP/aPHdLx4+fviziqN493qCAqTeaBGtVB IyS0XDX68utHqeSc3KR6YhPYxruclIKKoCXyjFm+2o9tP0id4b7CGcutX8y1NCzMeymV mk3A== X-Gm-Message-State: APjAAAXRkZHecwk4aIYh+OxM9XKAIQYi2ZMVnw/sjsEub09hyFN0h30y OlL1F6xHBx/qAig4ZfnOl+2zj9ebpFCYvIOg7547ddO5n/0J X-Google-Smtp-Source: APXvYqylZCr71afqbkmSSEoG0bXp+Wqna6q1KYeqMuVdotyvmT64jqS7CvFtW+Sb2KKJRXvbqprM29x92pCgtQB9t92MfbiYnkEv MIME-Version: 1.0 X-Received: by 2002:a5d:8f8a:: with SMTP id l10mr8658161iol.306.1565605206234; Mon, 12 Aug 2019 03:20:06 -0700 (PDT) Date: Mon, 12 Aug 2019 03:20:06 -0700 In-Reply-To: <000000000000492086058fad2979@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002d1bcc058fe8deb8@google.com> Subject: Re: BUG: corrupted list in rxrpc_local_processor From: syzbot To: davem@davemloft.net, dhowells@redhat.com, linux-afs@lists.infradead.org, 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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: 125b7e09 net: tc35815: Explicitly check NET_IP_ALIGN is no.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=16fb7bc2600000 kernel config: https://syzkaller.appspot.com/x/.config?x=a4c9e9f08e9e8960 dashboard link: https://syzkaller.appspot.com/bug?extid=193e29e9387ea5837f1d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=159d4eba600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ba194a600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+193e29e9387ea5837f1d@syzkaller.appspotmail.com IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready list_del corruption. prev->next should be ffff8880996e84e0, but was ffff8880996e8960 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:51! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc3+ #159 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: krxrpcd rxrpc_local_processor RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51 Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03 1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b RSP: 0018:ffff8880a9917cc0 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffff8880996e84f8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1015322f8a RBP: ffff8880a9917cd8 R08: 0000000000000054 R09: ffffed1015d260d1 R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff88808f998638 R13: ffff88808f998638 R14: ffff8880996e84e0 R15: ffff8880aa0a8500 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2648a08db8 CR3: 00000000981a9000 CR4: 00000000001406e0 Call Trace: __list_del_entry include/linux/list.h:131 [inline] list_del_init include/linux/list.h:190 [inline] rxrpc_local_destroyer net/rxrpc/local_object.c:429 [inline] rxrpc_local_processor+0x251/0x830 net/rxrpc/local_object.c:465 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 4d70382ddfcfe2b8 ]--- RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51 Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03 1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b RSP: 0018:ffff8880a9917cc0 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffff8880996e84f8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1015322f8a RBP: ffff8880a9917cd8 R08: 0000000000000054 R09: ffffed1015d260d1 R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff88808f998638 R13: ffff88808f998638 R14: ffff8880996e84e0 R15: ffff8880aa0a8500 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2648a08db8 CR3: 00000000981a9000 CR4: 00000000001406e0