ntfs: (device loop4): load_and_init_upcase(): Failed to load $UpCase from the volume. Using default.
ntfs: volume version 3.1.
------------[ cut here ]------------
kernel BUG at fs/ntfs/file.c:493!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15031 Comm: syz.4.2649 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ntfs_grab_cache_pages fs/ntfs/file.c:493 [inline]
RIP: 0010:ntfs_perform_write+0x7a61/0x7bf0 fs/ntfs/file.c:1833
Code: 75 9e c3 fe 0f 0b e8 6e 9e c3 fe 48 8b 7c 24 28 48 c7 c6 00 d2 fc 8a e8 0d 29 04 ff 0f 0b e8 56 9e c3 fe 0f 0b e8 4f 9e c3 fe <0f> 0b e8 48 9e c3 fe 0f 0b e8 41 9e c3 fe 0f 0b 89 f9 80 e1 07 38
RSP: 0018:ffffc9000d82f820 EFLAGS: 00010283
RAX: ffffffff82c34721 RBX: ffffc9000d82fdb0 RCX: 0000000000080000
RDX: ffffc9000ca4a000 RSI: 0000000000028fb4 RDI: 0000000000028fb5
RBP: ffffc9000d82fc28 R08: ffff88801ef55a00 R09: 0000000000000002
R10: 0000000000000005 R11: 0000000000000002 R12: ffff88805defb6c8
R13: 0000000000000001 R14: 0000000000000ac0 R15: 0000000000000000
FS:  00007f32646116c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0dc9bc1ff8 CR3: 00000000681ce000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 ntfs_file_write_iter+0x112f/0x1a80 fs/ntfs/file.c:1916
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __x64_sys_pwrite64+0x198/0x220 fs/read_write.c:706
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f326379de59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3264611028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f3263a25fa0 RCX: 00007f326379de59
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f3263833e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000c00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3263a26038 R14: 00007f3263a25fa0 R15: 00007ffd43efddc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ntfs_grab_cache_pages fs/ntfs/file.c:493 [inline]
RIP: 0010:ntfs_perform_write+0x7a61/0x7bf0 fs/ntfs/file.c:1833
Code: 75 9e c3 fe 0f 0b e8 6e 9e c3 fe 48 8b 7c 24 28 48 c7 c6 00 d2 fc 8a e8 0d 29 04 ff 0f 0b e8 56 9e c3 fe 0f 0b e8 4f 9e c3 fe <0f> 0b e8 48 9e c3 fe 0f 0b e8 41 9e c3 fe 0f 0b 89 f9 80 e1 07 38
RSP: 0018:ffffc9000d82f820 EFLAGS: 00010283
RAX: ffffffff82c34721 RBX: ffffc9000d82fdb0 RCX: 0000000000080000
RDX: ffffc9000ca4a000 RSI: 0000000000028fb4 RDI: 0000000000028fb5
RBP: ffffc9000d82fc28 R08: ffff88801ef55a00 R09: 0000000000000002
R10: 0000000000000005 R11: 0000000000000002 R12: ffff88805defb6c8
R13: 0000000000000001 R14: 0000000000000ac0 R15: 0000000000000000
FS:  00007f32646116c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecece07658 CR3: 00000000681ce000 CR4: 00000000003506e0