From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753850AbeDSRCE (ORCPT ); Thu, 19 Apr 2018 13:02:04 -0400 Received: from mail-it0-f71.google.com ([209.85.214.71]:43977 "EHLO mail-it0-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753375AbeDSRCC (ORCPT ); Thu, 19 Apr 2018 13:02:02 -0400 X-Google-Smtp-Source: AIpwx48nIz6nTAojFomEPC44ruXmnoNPakCRZPqeqrtv8Lz5Rxu+UXg3KxH3xVqePYxXStJ8ajQvUWWAEmHLh8I3moqSl+Y2I9GX MIME-Version: 1.0 Date: Thu, 19 Apr 2018 10:02:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c4b45a056a36872f@google.com> Subject: kernel BUG at fs/ntfs/aops.c:LINE! From: syzbot To: anton@tuxera.com, linux-kernel@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot hit the following crash on upstream commit 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539 (Wed Apr 18 19:48:17 2018 +0000) Merge tag 'ceph-for-4.17-rc2' of git://github.com/ceph/ceph-client syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=6a5a7672f663cce8b156 So far this crash happened 2 times on upstream. C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5736415891554304 syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=6093704288796672 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=4519020095078400 Kernel config: https://syzkaller.appspot.com/x/.config?id=1808800213120130118 compiler: gcc (GCC) 8.0.1 20180413 (experimental) IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+6a5a7672f663cce8b156@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer. ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker. ------------[ cut here ]------------ kernel BUG at fs/ntfs/aops.c:207! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4507 Comm: syzkaller117743 Not tainted 4.17.0-rc1+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ntfs_read_block fs/ntfs/aops.c:207 [inline] RIP: 0010:ntfs_readpage+0x1d0e/0x2290 fs/ntfs/aops.c:456 RSP: 0018:ffff8801d9096f48 EFLAGS: 00010293 RAX: ffff8801ac5a6440 RBX: 0000000000000000 RCX: ffffffff82573fa0 RDX: 0000000000000000 RSI: ffffffff82573fae RDI: 0000000000000007 RBP: ffff8801d90971a8 R08: ffff8801ac5a6440 R09: fffff94000e43853 R10: fffff94000e43853 R11: ffffea000721c29f R12: ffffea000721c290 R13: dffffc0000000000 R14: ffffea000721c280 R15: ffff8801a86b4788 FS: 0000000002339880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000001a8b1c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_read_cache_page+0x778/0x13b0 mm/filemap.c:2806 read_cache_page+0x61/0x80 mm/filemap.c:2894 read_mapping_page include/linux/pagemap.h:402 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] map_mft_record_page fs/ntfs/mft.c:85 [inline] map_mft_record+0x290/0xb40 fs/ntfs/mft.c:168 ntfs_read_locked_inode+0x19b/0x55f0 fs/ntfs/inode.c:575 ntfs_read_inode_mount+0xb53/0x23e0 fs/ntfs/inode.c:2100 ntfs_fill_super+0x1513/0x3090 fs/ntfs/super.c:2871 mount_bdev+0x30c/0x3e0 fs/super.c:1165 ntfs_mount+0x34/0x40 fs/ntfs/super.c:3065 mount_fs+0xae/0x328 fs/super.c:1268 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 ksys_mount+0x12d/0x140 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44471a RSP: 002b:00007ffe6b3e9468 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000200012c0 RCX: 000000000044471a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe6b3e9470 RBP: 0000000000000003 R08: 000000002007e200 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 R13: 0000000000403610 R14: 0000000000000000 R15: 0000000000000000 Code: 85 18 fe ff ff 31 ff 48 8b 98 80 fd ff ff 48 c1 eb 03 83 e3 01 48 89 de e8 b0 f1 21 ff 48 85 db 0f 85 38 f0 ff ff e8 72 f0 21 ff <0f> 0b c6 85 c4 fd ff ff 00 e9 8c f4 ff ff e8 5f f0 21 ff 0f 0b RIP: ntfs_read_block fs/ntfs/aops.c:207 [inline] RSP: ffff8801d9096f48 RIP: ntfs_readpage+0x1d0e/0x2290 fs/ntfs/aops.c:456 RSP: ffff8801d9096f48 ---[ end trace dc7c4ed6d595ee67 ]--- --- This bug is generated by a dumb bot. 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