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=-3.7 required=3.0 tests=BAYES_00,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 0A15DC388F9 for ; Sat, 21 Nov 2020 13:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDCDB22206 for ; Sat, 21 Nov 2020 13:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727822AbgKUNFW (ORCPT ); Sat, 21 Nov 2020 08:05:22 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:47391 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727531AbgKUNFV (ORCPT ); Sat, 21 Nov 2020 08:05:21 -0500 Received: by mail-il1-f200.google.com with SMTP id u16so9830191ilq.14 for ; Sat, 21 Nov 2020 05:05:20 -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=Kx24CXOx4h3MoNKtzLcVFy4b4NJQ3zEv6U+MFEpVEMI=; b=l/u0DKnEFKCx6YiiGLzdevnsftC1eeFQ3KNAcKQgWaSSalRkEnaWCU+mZygtgd3zfc rsfqdYAAz0aGI6XX74NCrI+3BPkNiZlvf3V+qisyudpyHXV4snw7JWJu1t3WmKQA5iRc uMHudWm0cJC/QdsqkH7k4ZQYif+RD5G3+ifaJh0sWIh2Yw+TfEUIFHC/YZzldHB+RyYQ +e6HcPqzDRZPcmu/V0LSuaMR9wy31FUVu+2aJKlE52z4OVrHz/hfj/Mb/BvUEO3lrjNd 4xGZ+H3Pzi8fusBJ8pxuXFTL49bYtT1tmxSBbB1qCeejiWcqKIj2VgmTs3Ict1Cf2fQS a8eQ== X-Gm-Message-State: AOAM530LCEldQ8mouWdi1qA7G2d/4SffDrs3kqMQ5NqtfbfDG18QY5ie n1uU1HMXPPeo7aEhBUkFi68Gh55iAjYwiqUS8gwnf6o4FX6o X-Google-Smtp-Source: ABdhPJwrNBZNMz72JeyK7xgPiRK9+q7pfheadHRdv6fTc5ia/37KeI+sFITzY5vAAtdYELYBc1kVzcy0ZtQRQlsaPXIvhji/Y8eX MIME-Version: 1.0 X-Received: by 2002:a5d:8403:: with SMTP id i3mr20142471ion.6.1605963919820; Sat, 21 Nov 2020 05:05:19 -0800 (PST) Date: Sat, 21 Nov 2020 05:05:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f6914405b49d9c9d@google.com> Subject: kernel BUG at include/linux/highmem.h:LINE! 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" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 7c8ca812 Add linux-next specific files for 20201117 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=16ea946a500000 kernel config: https://syzkaller.appspot.com/x/.config?x=ff4bc71371dc5b13 dashboard link: https://syzkaller.appspot.com/bug?extid=dcb847a3e1e0ecd191ab compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14530c7a500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137c581c500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+dcb847a3e1e0ecd191ab@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at include/linux/highmem.h:202! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8526 Comm: syz-executor603 Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:zero_user_segments include/linux/highmem.h:202 [inline] RIP: 0010:zero_user include/linux/highmem.h:223 [inline] RIP: 0010:truncate_inode_partial_page+0x5aa/0x720 mm/truncate.c:264 Code: bc 01 00 00 00 e8 e6 f8 ff ff e9 e7 fe ff ff e8 2c 12 d8 ff 48 c7 c6 00 44 54 89 48 89 ef e8 dd b5 08 00 0f 0b e8 16 12 d8 ff <0f> 0b e8 0f 12 d8 ff 48 c7 c6 80 44 54 89 48 89 ef e8 c0 b5 08 00 RSP: 0018:ffffc90000f8fa00 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000200000 RCX: ffffffff81987fe1 RDX: ffff88801e614f80 RSI: ffffffff819882ca RDI: 0000000000000005 RBP: ffffea0000c70000 R08: 0000000000000000 R09: ffffea0000c70007 R10: 0000000000001000 R11: 0000000000000000 R12: 00000000001ffffa R13: 00000000001ffffa R14: 0000000000000006 R15: ffffea0000c70008 FS: 0000000000e30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043e920 CR3: 00000000228a7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: shmem_undo_range+0x6fd/0x18f0 mm/shmem.c:921 shmem_truncate_range mm/shmem.c:999 [inline] shmem_setattr+0x67a/0xc70 mm/shmem.c:1058 notify_change+0xb60/0x10a0 fs/attr.c:336 do_truncate+0x134/0x1f0 fs/open.c:64 vfs_truncate+0x49e/0x600 fs/open.c:110 do_sys_truncate.part.0+0x11e/0x140 fs/open.c:133 do_sys_truncate fs/open.c:127 [inline] __do_sys_truncate fs/open.c:145 [inline] __se_sys_truncate fs/open.c:143 [inline] __x64_sys_truncate+0x69/0x90 fs/open.c:143 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x444109 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 db d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffec4a90088 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444109 RDX: 0000000000444109 RSI: 0000000000000006 RDI: 0000000020000040 RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000401d70 R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 910e59f95b39ab18 ]--- RIP: 0010:zero_user_segments include/linux/highmem.h:202 [inline] RIP: 0010:zero_user include/linux/highmem.h:223 [inline] RIP: 0010:truncate_inode_partial_page+0x5aa/0x720 mm/truncate.c:264 Code: bc 01 00 00 00 e8 e6 f8 ff ff e9 e7 fe ff ff e8 2c 12 d8 ff 48 c7 c6 00 44 54 89 48 89 ef e8 dd b5 08 00 0f 0b e8 16 12 d8 ff <0f> 0b e8 0f 12 d8 ff 48 c7 c6 80 44 54 89 48 89 ef e8 c0 b5 08 00 RSP: 0018:ffffc90000f8fa00 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000200000 RCX: ffffffff81987fe1 RDX: ffff88801e614f80 RSI: ffffffff819882ca RDI: 0000000000000005 RBP: ffffea0000c70000 R08: 0000000000000000 R09: ffffea0000c70007 R10: 0000000000001000 R11: 0000000000000000 R12: 00000000001ffffa R13: 00000000001ffffa R14: 0000000000000006 R15: ffffea0000c70008 FS: 0000000000e30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043e920 CR3: 00000000228a7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. 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