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=-8.7 required=3.0 tests=BAYES_00,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 A829AC43461 for ; Tue, 15 Sep 2020 09:36:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A7C221974 for ; Tue, 15 Sep 2020 09:36:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726457AbgIOJgN (ORCPT ); Tue, 15 Sep 2020 05:36:13 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:55107 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726102AbgIOJgJ (ORCPT ); Tue, 15 Sep 2020 05:36:09 -0400 Received: by mail-io1-f69.google.com with SMTP id q6so1732709iod.21 for ; Tue, 15 Sep 2020 02:36:09 -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=UcoXJ3DWpxuxQFqTRdNdlGwpRE+88WY3RzezobyEb4w=; b=UdaS+6U/iGC04od1jSZOa4E0M0PJTQkLfTawGoju0E/HsfJSQKrqkKgY5aXVxSFZGI 9oQ2AYeaU5QmxGEUx61qNW1A8n8rSCtltIxOBeMUFQ9So4u6819LMns47DVdbYf+MkUO BCznFxmA+pRY/6EyxUPww//R0AWylMoeiYjJ/5GL8Zn82KakxB8Dnn93HnjhDVLZKtA0 BfVj619sCdiAcJeOujH/uFXwmM3qEFh3B6vJPc5Y9ccpJ/cQvGy3jHIq4kEcUjCqAXGM Ri9kMpEXifzlVw3+zciVo5NmN/OE2yt0fO7jDIDPD4n/HKSTdLpvn80VHhlANqXkFb0a Hqgw== X-Gm-Message-State: AOAM532OptAW8SJSSBSOyAblLnVQ1G2NcQrhRnNmQ9mDtPW4ikcLPGfX 6anpZjYqCxsmTN9kYjhv8pXf95gl93Ap6WAtidjaYtcQm1+Z X-Google-Smtp-Source: ABdhPJwZnkEcLy8h8u0SX4E5QCPA5MN3NTubf7r0fjA2ZMbOzsXpDEn33AmtqsuPHvyVOm7JCbmZ1uqAcWu92ldr1l8H3iiGaSPN MIME-Version: 1.0 X-Received: by 2002:a6b:244:: with SMTP id 65mr14205002ioc.7.1600162568887; Tue, 15 Sep 2020 02:36:08 -0700 (PDT) Date: Tue, 15 Sep 2020 02:36:08 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000080680205af56e162@google.com> Subject: Re: general protection fault in unlink_file_vma From: syzbot To: akpm@linux-foundation.org, hdanton@sina.com, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com 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 has tested the proposed patch but the reproducer is still triggering an issue: kernel panic: corrupted stack end in sys_nanosleep Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 13791 Comm: syz-executor.4 Not tainted 5.9.0-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+0x198/0x1fd lib/dump_stack.c:118 panic+0x347/0x7c0 kernel/panic.c:231 schedule_debug kernel/sched/core.c:4278 [inline] __schedule+0x221e/0x2230 kernel/sched/core.c:4422 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x222/0x650 kernel/time/hrtimer.c:1883 hrtimer_nanosleep+0x1f9/0x430 kernel/time/hrtimer.c:1936 __do_sys_nanosleep kernel/time/hrtimer.c:1970 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1957 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1957 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ba81 Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 84 cf fb ff c3 48 83 ec 08 e8 ea 46 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 33 47 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffca6cb6d70 EFLAGS: 00000293 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000002f226 RCX: 000000000045ba81 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffca6cb6d80 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffca6cb6e80 R11: 0000000000000293 R12: 000000000118cf40 R13: 000000000118d940 R14: ffffffffffffffff R15: 000000000118cfec Kernel Offset: disabled Rebooting in 86400 seconds.. Tested on: commit: 796cd8f4 fix gpf git tree: https://github.com/Linmiaohe/linux/ console output: https://syzkaller.appspot.com/x/log.txt?x=12b5d501900000 kernel config: https://syzkaller.appspot.com/x/.config?x=f82e58a6661a5ac4 dashboard link: https://syzkaller.appspot.com/bug?extid=c5d5a51dcbb558ca0cb5 compiler: gcc (GCC) 10.1.0-syz 20200507