------------[ cut here ]------------
WARNING: CPU: 1 PID: 7665 at fs/udf/udfdecl.h:127 udf_updated_lvid fs/udf/udfdecl.h:125 [inline]
WARNING: CPU: 1 PID: 7665 at fs/udf/udfdecl.h:127 udf_add_free_space fs/udf/balloc.c:137 [inline]
WARNING: CPU: 1 PID: 7665 at fs/udf/udfdecl.h:127 udf_bitmap_free_blocks fs/udf/balloc.c:183 [inline]
WARNING: CPU: 1 PID: 7665 at fs/udf/udfdecl.h:127 udf_free_blocks+0x7b0/0x16c0 fs/udf/balloc.c:683
Modules linked in:
CPU: 1 PID: 7665 Comm: syz.3.599 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:udf_updated_lvid fs/udf/udfdecl.h:125 [inline]
RIP: 0010:udf_add_free_space fs/udf/balloc.c:137 [inline]
RIP: 0010:udf_bitmap_free_blocks fs/udf/balloc.c:183 [inline]
RIP: 0010:udf_free_blocks+0x7b0/0x16c0 fs/udf/balloc.c:683
Code: 00 e8 c4 fd 0b ff 4c 39 7c 24 70 0f 86 e9 02 00 00 48 01 5c 24 30 e8 cf a0 9e fe 48 8b 44 24 68 e9 88 fb ff ff e8 c0 a0 9e fe <0f> 0b eb 81 48 8b 8c 24 80 00 00 00 80 e1 07 38 c1 0f 8c 85 fb ff
RSP: 0018:ffffc90004ddf9c0 EFLAGS: 00010293
RAX: ffffffff82e23f10 RBX: 000000002dc45bb0 RCX: ffff8880534a5940
RDX: 0000000000000000 RSI: 000000002dc45bb0 RDI: 0000000000000000
RBP: ffffc90004ddfbd0 R08: dffffc0000000000 R09: ffffed1008577008
R10: ffffed1008577008 R11: 1ffff11008577007 R12: 1ffff1100f95f8cf
R13: dffffc0000000000 R14: ffff88807cafc678 R15: ffff888052b9801f
FS:  000055557d41b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f41c8d90068 CR3: 000000004f3e7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_discard_prealloc+0x414/0x600 fs/udf/truncate.c:151
 udf_release_file+0xb8/0x120 fs/udf/file.c:236
 __fput+0x22c/0x920 fs/file_table.c:320
 task_work_run+0x1ca/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc45998f749
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:00007ffdbb584318 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000035964 RCX: 00007fc45998f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc459be7da0 R08: 0000000000000001 R09: 0000001abb58460f
R10: 0000001b2e020000 R11: 0000000000000246 R12: 00007fc459be609c
R13: 00007fc459be6090 R14: ffffffffffffffff R15: 00007ffdbb584430
 </TASK>