loop7: detected capacity change from 0 to 4096
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 623dc067 P4D 623dc067 PUD 646ca067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8623 Comm: syz.7.780 Not tainted 5.15.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc90002f4fcc8 EFLAGS: 00010282
RAX: 1ffffffff15b89e7 RBX: ffffea000145b600 RCX: ffffffff8adc4f38
RDX: ffffc9000eacb000 RSI: 00000000000005e9 RDI: ffffea000145b600
RBP: dffffc0000000000 R08: ffffffff81ab8439 R09: fffff9400028b6c1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffea000145b600 R14: 0000000000000001 R15: ffffffffffffffff
FS:  00007f144f2746c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000023a4c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ntfs_sparse_cluster+0x76e/0xbb0 fs/ntfs3/file.c:337
 ntfs_fallocate+0x7da/0xee0 fs/ntfs3/file.c:703
 vfs_fallocate+0x54a/0x6b0 fs/open.c:308
 ksys_fallocate fs/open.c:331 [inline]
 __do_sys_fallocate fs/open.c:339 [inline]
 __se_sys_fallocate fs/open.c:337 [inline]
 __x64_sys_fallocate+0xb9/0x100 fs/open.c:337
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1451403d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f144f274038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f14515f3fa0 RCX: 00007f1451403d29
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f145147fa20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000020007 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f14515f3fa0 R15: 00007ffdb27e4cc8
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace b521542fb61e0791 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc90002f4fcc8 EFLAGS: 00010282
RAX: 1ffffffff15b89e7 RBX: ffffea000145b600 RCX: ffffffff8adc4f38
RDX: ffffc9000eacb000 RSI: 00000000000005e9 RDI: ffffea000145b600
RBP: dffffc0000000000 R08: ffffffff81ab8439 R09: fffff9400028b6c1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffea000145b600 R14: 0000000000000001 R15: ffffffffffffffff
FS:  00007f144f2746c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000023a4c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400