linux-kernel - [syzbot] [ntfs3?] BUG: unable to handle kernel paging request in mi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <67aee8d7.050a0220.21dd3.0031.GAE@google.com>
Date: Thu, 13 Feb 2025 22:55:19 -0800
From: syzbot <syzbot+8282d8328968be03242e@...kaller.appspotmail.com>
To: almaz.alexandrovich@...agon-software.com, linux-kernel@...r.kernel.org, 
	ntfs3@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [ntfs3?] BUG: unable to handle kernel paging request in mi_init

Hello,

syzbot found the following issue on:

HEAD commit:    ab68d7eb7b1a Merge tag 'loongarch-fixes-6.14-1' of git://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15c281b8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3c2347dd6174fbe2
dashboard link: https://syzkaller.appspot.com/bug?extid=8282d8328968be03242e
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-ab68d7eb.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c21c98f96a97/vmlinux-ab68d7eb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d84966ad5d14/bzImage-ab68d7eb.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8282d8328968be03242e@...kaller.appspotmail.com

UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list
loop0: detected capacity change from 0 to 4096
ntfs3(loop0): Different NTFS sector size (1024) and media sector size (512).
BUG: unable to handle page fault for address: ffffed110a52075b
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 5ffcd067 P4D 5ffcd067 PUD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.14.0-rc2-syzkaller-00056-gab68d7eb7b1a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mi_init+0x86/0xe0 fs/ntfs3/record.c:105
Code: 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 5d 41 8b 3e be 40 0c 00 00 e8 18 91 00 ff 48 89 c5 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 9b ed 0b ff 48 89 2b 31 c9 48 85
RSP: 0018:ffffc9000d2f7690 EFLAGS: 00010a06
RAX: 1ffff1100a52075c RBX: ffff888052903ae0 RCX: 0000000000000800
RDX: 0000000000000400 RSI: ffffffff8c608ca0 RDI: ffffffff8c608c60
RBP: ffff8880367f4000 R08: 0000000000000c40 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff285f729 R12: dffffc00ffffffff
R13: ffff888035c16000 R14: ffff888035c16030 R15: 000000000000000a
FS:  00007fec9fdc16c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed110a52075b CR3: 00000000432c4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ntfs_read_mft fs/ntfs3/inode.c:54 [inline]
 ntfs_iget5+0x372/0x3800 fs/ntfs3/inode.c:540
 ntfs_fill_super+0x3e8e/0x4730 fs/ntfs3/super.c:1477
 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3560
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec9ef8e58a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fec9fdc0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fec9fdc0ef0 RCX: 00007fec9ef8e58a
RDX: 000040000001f800 RSI: 000040000001f840 RDI: 00007fec9fdc0eb0
RBP: 000040000001f800 R08: 00007fec9fdc0ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000040000001f840
R13: 00007fec9fdc0eb0 R14: 000000000001f813 R15: 0000400000000040
 </TASK>
Modules linked in:
CR2: ffffed110a52075b
---[ end trace 0000000000000000 ]---
RIP: 0010:mi_init+0x86/0xe0 fs/ntfs3/record.c:105
Code: 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 5d 41 8b 3e be 40 0c 00 00 e8 18 91 00 ff 48 89 c5 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 9b ed 0b ff 48 89 2b 31 c9 48 85
RSP: 0018:ffffc9000d2f7690 EFLAGS: 00010a06
RAX: 1ffff1100a52075c RBX: ffff888052903ae0 RCX: 0000000000000800
RDX: 0000000000000400 RSI: ffffffff8c608ca0 RDI: ffffffff8c608c60
RBP: ffff8880367f4000 R08: 0000000000000c40 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff285f729 R12: dffffc00ffffffff
R13: ffff888035c16000 R14: ffff888035c16030 R15: 000000000000000a
FS:  00007fec9fdc16c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed110a52075b CR3: 00000000432c4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 f0                	mov    %esi,%eax
   2:	48 c1 e8 03          	shr    $0x3,%rax
   6:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax
   b:	84 c0                	test   %al,%al
   d:	75 5d                	jne    0x6c
   f:	41 8b 3e             	mov    (%r14),%edi
  12:	be 40 0c 00 00       	mov    $0xc40,%esi
  17:	e8 18 91 00 ff       	call   0xff009134
  1c:	48 89 c5             	mov    %rax,%rbp
  1f:	48 83 c3 20          	add    $0x20,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 9b ed 0b ff       	call   0xff0bedd4
  39:	48 89 2b             	mov    %rbp,(%rbx)
  3c:	31 c9                	xor    %ecx,%ecx
  3e:	48                   	rex.W
  3f:	85                   	.byte 0x85


---
This report 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@...glegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup