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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 4D88EC3524A for ; Tue, 4 Feb 2020 04:43:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A3322086A for ; Tue, 4 Feb 2020 04:43:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727244AbgBDEnM (ORCPT ); Mon, 3 Feb 2020 23:43:12 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:48903 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726992AbgBDEnM (ORCPT ); Mon, 3 Feb 2020 23:43:12 -0500 Received: by mail-il1-f200.google.com with SMTP id u14so13951807ilq.15 for ; Mon, 03 Feb 2020 20:43:12 -0800 (PST) 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=i5yXvtiH1y6cVNcs98LhuiQSJ2L1URSUSXCgGl2kp4o=; b=rNiYkSuVMylywQDtPYlxxE1dhA4i5dk4NqOPowUIL6TWxD83+yvpHFL+S3FTwlxHLO I1ZNtCke2i1uojxZddW4pJSAcQH5VjmQLA2AS4hP4YGfhv/ZTDHdeD39NR8tb16JzPnV mC/1YmuO+Ey+HXVIw3qEZY+dBzl2WLo23R2GZpm/CPKhhk2CRW6Ailg5cATRiG403Hi8 i91lIc3E5Z9EkmsRSoZyoEU6ySbNphuul5jEqBJM8fT7daPSZvsDAvPH5pKrXnQIDImj V4kLoJG+9oslGSrork4/e6y/UlBCANSqwo6uejIrMhej/QgqSw9N2kuRljtj7Is/wOJ7 REzw== X-Gm-Message-State: APjAAAUasu78cKFtQQvlcLSP1E6FOAHVv8lXeZdoRQGxQMwBfT1MTbbm 4vxvyZM1mmQSFACwy5ardzbPmifAdmPJnPGYacZOim8Lu+v/ X-Google-Smtp-Source: APXvYqxX6zG1qzU/DrmwB5dQxqB0SZivucTEFYJ6/NtVlFWzr7KkIpkeW5qBL1EBhh8tbFZUS27zAjdxQZK85VfxZFGD/7ffPaId MIME-Version: 1.0 X-Received: by 2002:a02:ccea:: with SMTP id l10mr14889099jaq.114.1580791391626; Mon, 03 Feb 2020 20:43:11 -0800 (PST) Date: Mon, 03 Feb 2020 20:43:11 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005cad20059db8adba@google.com> Subject: BUG: stack guard page was hit in update_stack_state From: syzbot To: bp@alien8.de, hpa@zytor.com, jannh@google.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, netdev@vger.kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: b3a60822 Merge branch 'for-v5.6' of git://git.kernel.org:/.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=147ae5f1e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=614e56d86457f3a7 dashboard link: https://syzkaller.appspot.com/bug?extid=c2fb6f9ddcea95ba49b5 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+c2fb6f9ddcea95ba49b5@syzkaller.appspotmail.com 8021q: adding VLAN 0 to HW filter on device bond40 BUG: stack guard page was hit at 0000000018e8ec40 (stack is 000000008cfdf90e..000000000f88bd28) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 28658 Comm: syz-executor.3 Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:update_stack_state+0x4b/0x5f0 arch/x86/kernel/unwind_frame.c:194 Code: fd 41 54 49 8d 0c 06 53 48 81 ec a0 00 00 00 48 c7 45 80 42 54 41 89 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 00 3f 33 81 <48> 89 b5 68 ff ff ff c7 01 f1 f1 f1 f1 c7 41 04 00 f3 f3 f3 48 89 RSP: 0018:ffffc9000769ffc0 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffffc900076a01a8 RCX: fffff52000ed4000 RDX: 1ffff92000ed4033 RSI: ffffc900076a0230 RDI: ffffc900076a01a8 RBP: ffffc900076a0088 R08: ffffc900076a01d0 R09: ffffc900076a0200 R10: ffffc900076a01d0 R11: ffffc900076a01e0 R12: 1ffff92000ed4018 R13: ffffc900076a01a8 R14: 1ffff92000ed4000 R15: ffffc900076a0230 FS: 00007fd172d8f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000769ffb8 CR3: 0000000097238000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace 04286e13cba26a71 ]--- RIP: 0010:update_stack_state+0x4b/0x5f0 arch/x86/kernel/unwind_frame.c:194 Code: fd 41 54 49 8d 0c 06 53 48 81 ec a0 00 00 00 48 c7 45 80 42 54 41 89 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 00 3f 33 81 <48> 89 b5 68 ff ff ff c7 01 f1 f1 f1 f1 c7 41 04 00 f3 f3 f3 48 89 RSP: 0018:ffffc9000769ffc0 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffffc900076a01a8 RCX: fffff52000ed4000 RDX: 1ffff92000ed4033 RSI: ffffc900076a0230 RDI: ffffc900076a01a8 RBP: ffffc900076a0088 R08: ffffc900076a01d0 R09: ffffc900076a0200 R10: ffffc900076a01d0 R11: ffffc900076a01e0 R12: 1ffff92000ed4018 R13: ffffc900076a01a8 R14: 1ffff92000ed4000 R15: ffffc900076a0230 FS: 00007fd172d8f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000769ffb8 CR3: 0000000097238000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.