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 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 680F8C2D0EA for ; Wed, 8 Apr 2020 07:43:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AAEF206A1 for ; Wed, 8 Apr 2020 07:43:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726889AbgDHHnS (ORCPT ); Wed, 8 Apr 2020 03:43:18 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:53091 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbgDHHnS (ORCPT ); Wed, 8 Apr 2020 03:43:18 -0400 Received: by mail-il1-f199.google.com with SMTP id a79so5912562ill.19 for ; Wed, 08 Apr 2020 00:43:17 -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=Yfh2racHXRGiiea0ss2C7ykuBCurPHg2w5+o2zZWepE=; b=KBzq44jj7T+riAc4PBd83E65Q5AwSXQisW0CVyvh3KKoEm0X70gfdwCxlu2ziieSt2 n8rvSN4OfLcR9XckHECnlEtJZFnXk+IAws71Es8HNYegV78Ov3v0HC2gNzQbBxBNOcJO X63F+cvafADYLZV9I1FVQKNGEN1IR/Fgl1VTmAsVDzJqVLRTSjzhfrAjSlIMYw/E101v 6kZi0X3XiXElszfv4FAJKBUpoMnG4PdxEz46KhSYkPMkvusyyBV2ph+pcufHZUFl7OjG +rN4iRLLTpTfqo/0XMObjpRqkgZRKoVeV8YuFWmHuQ94Z0q9x9q3flgvdibdKHsOU/Bj EzZw== X-Gm-Message-State: AGi0PuZKPhFpA5BAqLGkaC5LdpuTTa+GtO2rq5dx0Zdrc9QwgdhnrvhU 4hjtjtzqO0G4aAS3/yYIsT25muFJVGWSL/4RsobTHAWZuuMY X-Google-Smtp-Source: APiQypKYhNsV7VhUUeknf5ONVUjMGdirW/1J2Rp3wbrY+qYaMmSb2s8pHA6fI3guQfzv6HLR6oXKgFLg/3OagJWEPuvfND9TuLSo MIME-Version: 1.0 X-Received: by 2002:a05:6638:c44:: with SMTP id g4mr1832688jal.99.1586331797318; Wed, 08 Apr 2020 00:43:17 -0700 (PDT) Date: Wed, 08 Apr 2020 00:43:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004671b105a2c2a702@google.com> Subject: general protection fault in kernel_get_mempolicy From: syzbot To: akpm@linux-foundation.org, 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 found the following crash on: HEAD commit: bef7b2a7 Merge tag 'devicetree-for-5.7' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=124974e7e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=91b674b8f0368e69 dashboard link: https://syzkaller.appspot.com/bug?extid=ceba41fd2d12f822c1bd 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+ceba41fd2d12f822c1bd@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xf223931c0412cd20: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x911cb8e020966900-0x911cb8e020966907] CPU: 1 PID: 21483 Comm: syz-executor.5 Not tainted 5.6.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:page_to_nid include/linux/mm.h:1245 [inline] RIP: 0010:lookup_node mm/mempolicy.c:906 [inline] RIP: 0010:do_get_mempolicy mm/mempolicy.c:970 [inline] RIP: 0010:kernel_get_mempolicy+0x604/0xfb0 mm/mempolicy.c:1615 Code: 89 c7 e8 2f 37 c5 ff 85 db 0f 88 00 07 00 00 e8 b2 35 c5 ff 4c 8b 7c 24 78 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 fb 08 00 00 49 8b 1f 48 c7 c7 ff ff ff ff 48 89 RSP: 0018:ffffc900055e7de8 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90013b96000 RDX: 1223971c0412cd20 RSI: ffffffff81adaafe RDI: 0000000000000005 RBP: 0000000000000000 R08: ffff88802e0fe380 R09: ffffed1005c1fc71 R10: ffff88802e0fe387 R11: ffffed1005c1fc70 R12: 0000000000000000 R13: 1ffff92000abcfc4 R14: ffffffff89a6df60 R15: 911cb8e020966900 FS: 00007f93143f7700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30b23000 CR3: 0000000052590000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_get_mempolicy mm/mempolicy.c:1633 [inline] __se_sys_get_mempolicy mm/mempolicy.c:1629 [inline] __x64_sys_get_mempolicy+0xba/0x150 mm/mempolicy.c:1629 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45c849 Code: ad b6 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93143f6c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ef RAX: ffffffffffffffda RBX: 00007f93143f76d4 RCX: 000000000045c849 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000076bf00 R08: 0000000000000003 R09: 0000000000000000 R10: 000000002073b000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000000eb R14: 00000000004c371a R15: 000000000076bf0c Modules linked in: ---[ end trace 4f30e35dce9f5dd6 ]--- RIP: 0010:page_to_nid include/linux/mm.h:1245 [inline] RIP: 0010:lookup_node mm/mempolicy.c:906 [inline] RIP: 0010:do_get_mempolicy mm/mempolicy.c:970 [inline] RIP: 0010:kernel_get_mempolicy+0x604/0xfb0 mm/mempolicy.c:1615 Code: 89 c7 e8 2f 37 c5 ff 85 db 0f 88 00 07 00 00 e8 b2 35 c5 ff 4c 8b 7c 24 78 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 fb 08 00 00 49 8b 1f 48 c7 c7 ff ff ff ff 48 89 RSP: 0018:ffffc900055e7de8 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90013b96000 RDX: 1223971c0412cd20 RSI: ffffffff81adaafe RDI: 0000000000000005 RBP: 0000000000000000 R08: ffff88802e0fe380 R09: ffffed1005c1fc71 R10: ffff88802e0fe387 R11: ffffed1005c1fc70 R12: 0000000000000000 R13: 1ffff92000abcfc4 R14: ffffffff89a6df60 R15: 911cb8e020966900 FS: 00007f93143f7700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f535ca3c000 CR3: 0000000052590000 CR4: 00000000001426f0 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.