[syzbot] [ntfs?] BUG: unable to handle kernel paging request in lookup_open

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 831fe284d827 Merge tag 'spi-fix-v6.5-rc1' of git://git.ker..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=179dc062a80000
kernel config: https://syzkaller.appspot.com/x/.config?x=ae56ea581f8fd3f3
dashboard link: https://syzkaller.appspot.com/bug?extid=84b5465f68c3eb82c161
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13a52a24a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=156f908aa80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/255bb08af694/disk-831fe284.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8739de7ceb20/vmlinux-831fe284.xz
kernel image: https://storage.googleapis.com/syzbot-assets/612168188f94/bzImage-831fe284.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/ec45a7fef710/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+84b546...@syzkaller.appspotmail.com

ntfs: (device loop0): check_windows_hibernation_status(): Failed to find inode number for hiberfil.sys.
ntfs: (device loop0): load_system_files(): Failed to determine if Windows is hibernated. Mounting read-only. Run chkdsk.
BUG: unable to handle page fault for address: ffffffffff0000ab
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD c779067 P4D c779067 PUD c77b067 PMD c79b067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5011 Comm: syz-executor282 Not tainted 6.5.0-rc1-syzkaller-00259-g831fe284d827 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:lookup_open.isra.0+0x94b/0x1360 fs/namei.c:3484
Code: ff 48 85 ed 0f 85 37 05 00 00 e8 40 f4 9a ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 73 08 00 00 <48> 83 7b 68 00 0f 85 a3 f9 ff ff e8 15 f4 9a ff 8b 6c 24 20 31 ff
RSP: 0018:ffffc9000340f968 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffffffff000043 RCX: 0000000000000000
RDX: 1fffffffffe00015 RSI: ffffffff81ea92c0 RDI: ffffffff8ac7e2e0
RBP: ffffffffff000043 R08: 0000000000000000 R09: fffffbfff1d5590a
R10: ffffffff8eaac857 R11: ffffffff8a30a1e8 R12: 00000000ffffffe2
R13: ffff888071f22540 R14: 0000000010000000 R15: ffffffffff0000ab
FS: 00005555558ec380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff0000ab CR3: 0000000020267000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
open_last_lookups fs/namei.c:3560 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3790
do_filp_open+0x1de/0x430 fs/namei.c:3820
do_sys_openat2+0x176/0x1e0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_creat fs/open.c:1498 [inline]
__se_sys_creat fs/open.c:1492 [inline]
__x64_sys_creat+0xcd/0x120 fs/open.c:1492
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8ff6fb95b9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd29797788 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f8ff6fb95b9
RDX: 00007f8ff6fb88b0 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007f8ff704b610 R08: 000000000001ee42 R09: 0000000000000000
R10: 00007ffd29797650 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd29797958 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
CR2: ffffffffff0000ab
---[ end trace 0000000000000000 ]---
RIP: 0010:lookup_open.isra.0+0x94b/0x1360 fs/namei.c:3484
Code: ff 48 85 ed 0f 85 37 05 00 00 e8 40 f4 9a ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 73 08 00 00 <48> 83 7b 68 00 0f 85 a3 f9 ff ff e8 15 f4 9a ff 8b 6c 24 20 31 ff
RSP: 0018:ffffc9000340f968 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffffffff000043 RCX: 0000000000000000
RDX: 1fffffffffe00015 RSI: ffffffff81ea92c0 RDI: ffffffff8ac7e2e0
RBP: ffffffffff000043 R08: 0000000000000000 R09: fffffbfff1d5590a
R10: ffffffff8eaac857 R11: ffffffff8a30a1e8 R12: 00000000ffffffe2
R13: ffff888071f22540 R14: 0000000010000000 R15: ffffffffff0000ab
FS: 00005555558ec380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff0000ab CR3: 0000000020267000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: ff 48 85 decl -0x7b(%rax)
3: ed in (%dx),%eax
4: 0f 85 37 05 00 00 jne 0x541
a: e8 40 f4 9a ff call 0xff9af44f
f: 4c 89 fa mov %r15,%rdx
12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
19: fc ff df
1c: 48 c1 ea 03 shr $0x3,%rdx
20: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
24: 0f 85 73 08 00 00 jne 0x89d
* 2a: 48 83 7b 68 00 cmpq $0x0,0x68(%rbx) <-- trapping instruction
2f: 0f 85 a3 f9 ff ff jne 0xfffff9d8
35: e8 15 f4 9a ff call 0xff9af44f
3a: 8b 6c 24 20 mov 0x20(%rsp),%ebp
3e: 31 ff xor %edi,%edi


---
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 syzk...@googlegroups.com.

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

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

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

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

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

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

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <ja...@suse.cz>
Date: Wed Nov 1 17:43:10 2023 +0000

fs: Block writes to mounted block devices

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11feec2be80000
start commit: 831fe284d827 Merge tag 'spi-fix-v6.5-rc1' of git://git.ker..
git tree: upstream

kernel config: https://syzkaller.appspot.com/x/.config?x=ae56ea581f8fd3f3
dashboard link: https://syzkaller.appspot.com/bug?extid=84b5465f68c3eb82c161

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13a52a24a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=156f908aa80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: fs: Block writes to mounted block devices

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

[Jan Kara]

On Mon 15-01-24 01:05:04, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <ja...@suse.cz>
> Date: Wed Nov 1 17:43:10 2023 +0000
>
> fs: Block writes to mounted block devices
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11feec2be80000
> start commit: 831fe284d827 Merge tag 'spi-fix-v6.5-rc1' of git://git.ker..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=ae56ea581f8fd3f3
> dashboard link: https://syzkaller.appspot.com/bug?extid=84b5465f68c3eb82c161
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13a52a24a80000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=156f908aa80000
>
> If the result looks correct, please mark the issue as fixed by replying with:

Looks sensible:

#syz fix: fs: Block writes to mounted block devices

Honza
--
Jan Kara <ja...@suse.com>
SUSE Labs, CR