[syzbot] [ntfs3?] general protection fault in al_destroy

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 6b8c8af514d7 Add linux-next specific files for 20260807
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=13210149580000
kernel config: https://syzkaller.appspot.com/x/.config?x=6d343b54cc50df0f
dashboard link: https://syzkaller.appspot.com/bug?extid=04cf7b83f6dd2c3a54c8
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1284c2c6580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/71ff4edcb608/disk-6b8c8af5.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1f5fa331d8f2/vmlinux-6b8c8af5.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f993558ec63b/bzImage-6b8c8af5.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/f8133373f34e/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+04cf7b...@syzkaller.appspotmail.com

option from the mount to silence this warning.
=======================================================
ntfs3(loop0): Different NTFS sector size (1024) and media sector size (512).
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000042: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000210-0x0000000000000217]
CPU: 1 UID: 0 PID: 5838 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:run_close fs/ntfs3/ntfs_fs.h:1034 [inline]
RIP: 0010:al_destroy+0x49/0xc0 fs/ntfs3/attrlist.c:33
Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 8d 08 ff 48 8b 1b 4c 8d b3 10 02 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 38 8d 08 ff 48 8b bb 10 02 00 00
RSP: 0018:ffffc9000348f960 EFLAGS: 00010206
RAX: 0000000000000042 RBX: 0000000000000000 RCX: ffff88802ac23e80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88805a8d7810
RBP: 0000000000000001 R08: ffffffff9058fb7f R09: 1ffffffff20b1f6f
R10: dffffc0000000000 R11: fffffbfff20b1f70 R12: ffff88805a8d7a60
R13: dffffc0000000000 R14: 0000000000000210 R15: dffffc0000000000
FS: 000055555d771500(0000) GS:ffff88812500c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6813d4c000 CR3: 000000007270e000 CR4: 00000000003526f0
Call Trace:
<TASK>
ni_clear+0x5d/0x630 fs/ntfs3/frecord.c:110
evict+0x624/0xb50 fs/inode.c:822
ntfs_new_inode+0x8c/0x120 fs/ntfs3/fsntfs.c:1719
ntfs_create_inode+0x6e7/0x3420 fs/ntfs3/inode.c:1520
ntfs_mkdir+0x37/0x50 fs/ntfs3/namei.c:234
vfs_mkdir+0x40c/0x620 fs/namei.c:5410
filename_mkdirat+0x285/0x510 fs/namei.c:5443
__do_sys_mkdirat fs/namei.c:5464 [inline]
__se_sys_mkdirat+0x35/0x150 fs/namei.c:5461
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x510 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f057a79cf47
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff0d960bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fff0d960c60 RCX: 00007f057a79cf47
RDX: 00000000000001ff RSI: 00002000000000c0 RDI: 00000000ffffff9c
RBP: 00002000000002c0 R08: 00002000000007c0 R09: 0000000000000000
R10: 00002000000002c0 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007fff0d960c20 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:run_close fs/ntfs3/ntfs_fs.h:1034 [inline]
RIP: 0010:al_destroy+0x49/0xc0 fs/ntfs3/attrlist.c:33
Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 8d 08 ff 48 8b 1b 4c 8d b3 10 02 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 38 8d 08 ff 48 8b bb 10 02 00 00
RSP: 0018:ffffc9000348f960 EFLAGS: 00010206
RAX: 0000000000000042 RBX: 0000000000000000 RCX: ffff88802ac23e80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88805a8d7810
RBP: 0000000000000001 R08: ffffffff9058fb7f R09: 1ffffffff20b1f6f
R10: dffffc0000000000 R11: fffffbfff20b1f70 R12: ffff88805a8d7a60
R13: dffffc0000000000 R14: 0000000000000210 R15: dffffc0000000000
FS: 000055555d771500(0000) GS:ffff88812500c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6813d4c000 CR3: 000000007270e000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 02 00 add (%rax),%al
2: 00 48 89 add %cl,-0x77(%rax)
5: d8 48 c1 fmuls -0x3f(%rax)
8: e8 03 42 80 3c call 0x3c804210
d: 38 00 cmp %al,(%rax)
f: 74 08 je 0x19
11: 48 89 df mov %rbx,%rdi
14: e8 58 8d 08 ff call 0xff088d71
19: 48 8b 1b mov (%rbx),%rbx
1c: 4c 8d b3 10 02 00 00 lea 0x210(%rbx),%r14
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 38 8d 08 ff call 0xff088d71
39: 48 8b bb 10 02 00 00 mov 0x210(%rbx),%rdi


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