BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 8000000033061067 P4D 8000000033061067 PUD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 6763 Comm: syz.4.123 Not tainted 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000bc67938 EFLAGS: 00010246
RAX: 1ffffffff18ba0d5 RBX: ffffffff8c5d06a8 RCX: 0000000000000bfb
RDX: 0000000000005405 RSI: ffff888059893f30 RDI: ffff8880333d2700
RBP: ffffc9000bc67a68 R08: ffffc9000bc679e0 R09: ffffc9000bc67a00
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000bfb
R13: 000000000000abfb R14: dffffc0000000000 R15: ffff8880358d8000
FS:  00007fecb45f46c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000034786000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_perform_write+0x346/0x990 mm/filemap.c:4189
 ntfs_file_write_iter+0x6ee/0x7f0 fs/ntfs3/file.c:1267
 do_iter_readv_writev+0x71a/0x9d0
 vfs_writev+0x38b/0xbc0 fs/read_write.c:1050
 do_pwritev fs/read_write.c:1146 [inline]
 __do_sys_pwritev2 fs/read_write.c:1204 [inline]
 __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fecb378d169
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:00007fecb45f4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fecb39a5fa0 RCX: 00007fecb378d169
RDX: 0000000000000001 RSI: 0000400000000100 RDI: 0000000000000009
RBP: 00007fecb380e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000005405 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fecb39a5fa0 R15: 00007ffed8e38208
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000bc67938 EFLAGS: 00010246
RAX: 1ffffffff18ba0d5 RBX: ffffffff8c5d06a8 RCX: 0000000000000bfb
RDX: 0000000000005405 RSI: ffff888059893f30 RDI: ffff8880333d2700
RBP: ffffc9000bc67a68 R08: ffffc9000bc679e0 R09: ffffc9000bc67a00
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000bfb
R13: 000000000000abfb R14: dffffc0000000000 R15: ffff8880358d8000
FS:  00007fecb45f46c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000034786000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400