------------[ cut here ]------------
within_last_ext && elen > ((loff_t)offset + 1) << inode->i_blkbits
WARNING: fs/udf/inode.c:683 at udf_extend_file fs/udf/inode.c:682 [inline], CPU#0: syz.0.2830/17062
WARNING: fs/udf/inode.c:683 at udf_setsize+0xd56/0x1000 fs/udf/inode.c:1298, CPU#0: syz.0.2830/17062
Modules linked in:
CPU: 0 UID: 0 PID: 17062 Comm: syz.0.2830 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:udf_extend_file fs/udf/inode.c:682 [inline]
RIP: 0010:udf_setsize+0xd56/0x1000 fs/udf/inode.c:1298
Code: 8f e0 0f 48 3b 84 24 e0 00 00 00 75 7a 44 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3c 60 ba fd cc e8 5b 5f 6f fe 90 <0f> 0b 90 e9 e6 f7 ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 42 f3 ff ff
RSP: 0018:ffffc90006a67ae0 EFLAGS: 00010293
RAX: ffffffff8355e0d5 RBX: ffff888052462e80 RCX: ffff888032e40000
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000e00
RBP: ffffc90006a67c08 R08: ffff888052462e43 R09: 1ffff1100a48c5c8
R10: dffffc0000000000 R11: ffffed100a48c5c9 R12: 0000000000000e00
R13: 0000000000000001 R14: 0000000000000009 R15: 0000000000001000
FS:  00007f09945b46c0(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04c91456b8 CR3: 00000000556f4000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_setattr+0x39e/0x5a0 fs/udf/file.c:245
 notify_change+0xbba/0xea0 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 do_ftruncate+0x4d4/0x590 fs/open.c:194
 ksys_ftruncate fs/open.c:206 [inline]
 __do_sys_ftruncate fs/open.c:211 [inline]
 __se_sys_ftruncate fs/open.c:209 [inline]
 __x64_sys_ftruncate+0x8f/0xe0 fs/open.c:209
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f099639ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f09945b4028 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f0996616180 RCX: 00007f099639ce59
RDX: 0000000000000000 RSI: 0000000000000c00 RDI: 000000000000000b
RBP: 00007f0996432d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0996616218 R14: 00007f0996616180 R15: 00007fff02fbc668
 </TASK>