loop2: detected capacity change from 0 to 4096
ntfs3: loop2: Different NTFS' sector size (2048) and media sector size (512)
ntfs3: loop2: Mark volume as dirty due to NTFS errors
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 73e98067 P4D 73e98067 PUD 187e9067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7250 Comm: syz-executor.2 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000353fcc8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffea0001455300 RCX: dffffc0000000000
RDX: ffffc900043f5000 RSI: ffffea0001455300 RDI: ffff888058b3b0b8
RBP: 0000000000000000 R08: ffffffff81baae26 R09: fffff9400028aa61
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000
R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff
FS:  00007f25c1d2e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074f2e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ntfs_sparse_cluster+0x718/0xa20 fs/ntfs3/file.c:335
 ntfs_fallocate+0xa70/0x1020 fs/ntfs3/file.c:727
 vfs_fallocate+0x547/0x6b0 fs/open.c:323
 ksys_fallocate fs/open.c:346 [inline]
 __do_sys_fallocate fs/open.c:354 [inline]
 __se_sys_fallocate fs/open.c:352 [inline]
 __x64_sys_fallocate+0xb9/0x100 fs/open.c:352
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f25c107dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25c1d2e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f25c11abf80 RCX: 00007f25c107dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f25c10ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f25c11abf80 R15: 00007ffee2e51a18
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000353fcc8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffea0001455300 RCX: dffffc0000000000
RDX: ffffc900043f5000 RSI: ffffea0001455300 RDI: ffff888058b3b0b8
RBP: 0000000000000000 R08: ffffffff81baae26 R09: fffff9400028aa61
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000
R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff
FS:  00007f25c1d2e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074f2e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400