------------[ cut here ]------------
WARNING: CPU: 1 PID: 25511 at fs/buffer.c:1189 mark_buffer_dirty+0x38b/0x410 fs/buffer.c:1189
Modules linked in:
CPU: 1 UID: 0 PID: 25511 Comm: syz.0.5458 Not tainted 6.15.0-rc7-syzkaller-00175-g0f8c0258bf04 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:mark_buffer_dirty+0x38b/0x410 fs/buffer.c:1189
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 85 00 00 00 48 8b 3b be 20 00 00 00 e8 30 23 fc ff e9 d9 fd ff ff e8 86 5c 76 ff 90 <0f> 0b 90 e9 a1 fc ff ff e8 78 5c 76 ff 90 0f 0b 90 e9 c3 fc ff ff
RSP: 0018:ffffc900001e6b58 EFLAGS: 00010283
RAX: 0000000000000631 RBX: ffff88803a671828 RCX: ffffc9000d151000
RDX: 0000000000080000 RSI: ffffffff8244e8ba RDI: 0000000000000001
RBP: ffff8880481c6000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807e8ce4c0
R13: ffff88806f5ee000 R14: ffff88803a671828 R15: dffffc0000000000
FS:  00007f0adc3a76c0(0000) GS:ffff888124ae0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0adc3a6f98 CR3: 00000000457cd000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_bitmap_new_block fs/udf/balloc.c:347 [inline]
 udf_new_block+0x143e/0x1780 fs/udf/balloc.c:721
 inode_getblk+0xc6f/0x4100 fs/udf/inode.c:895
 udf_map_block+0x2dd/0x5b0 fs/udf/inode.c:447
 __udf_get_block+0x98/0x330 fs/udf/inode.c:461
 __block_write_begin_int+0x4f4/0x16d0 fs/buffer.c:2151
 udf_page_mkwrite+0x479/0xa00 fs/udf/file.c:65
 do_page_mkwrite+0x174/0x380 mm/memory.c:3287
 do_shared_fault mm/memory.c:5594 [inline]
 do_fault mm/memory.c:5656 [inline]
 do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
 handle_pte_fault mm/memory.c:5997 [inline]
 __handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
 faultin_page mm/gup.c:1193 [inline]
 __get_user_pages+0x771/0x36f0 mm/gup.c:1491
 __get_user_pages_locked mm/gup.c:1757 [inline]
 __gup_longterm_locked+0x20d/0x1850 mm/gup.c:2523
 pin_user_pages_remote+0xed/0x140 mm/gup.c:3560
 process_vm_rw_single_vec mm/process_vm_access.c:106 [inline]
 process_vm_rw_core.constprop.0+0x41b/0x9a0 mm/process_vm_access.c:216
 process_vm_rw+0x2ff/0x360 mm/process_vm_access.c:284
 __do_sys_process_vm_writev mm/process_vm_access.c:304 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:299 [inline]
 __x64_sys_process_vm_writev+0xe2/0x1c0 mm/process_vm_access.c:299
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0adb58e969
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:00007f0adc3a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007f0adb7b6080 RCX: 00007f0adb58e969
RDX: 0000000000000001 RSI: 0000200000c22000 RDI: 000000000000009d
RBP: 00007f0adb610ab1 R08: 0000000000000001 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f0adb7b6080 R15: 00007ffffa035298
 </TASK>