loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
within_last_ext && elen > ((loff_t)offset + 1) << inode->i_blkbits
WARNING: fs/udf/inode.c:681 at udf_extend_file fs/udf/inode.c:680 [inline], CPU#0: syz-executor.0/6070
WARNING: fs/udf/inode.c:681 at udf_setsize+0xde9/0x10b0 fs/udf/inode.c:1297, CPU#0: syz-executor.0/6070
Modules linked in:
CPU: 0 UID: 0 PID: 6070 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:udf_extend_file fs/udf/inode.c:680 [inline]
RIP: 0010:udf_setsize+0xde9/0x10b0 fs/udf/inode.c:1297
Code: 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 a6 24 bd fd cc e8 65 a3 72 fe 45 89 f4 e9 2a fe ff ff e8 58 a3 72 fe 90 <0f> 0b 90 e9 90 f7 ff ff 44 89 f1 80 e1 07 38 c1 0f 8c ab f2 ff ff
RSP: 0018:ffffc90003d97a80 EFLAGS: 00010293
RAX: ffffffff83531c78 RBX: ffff888074a1b3d8 RCX: ffff888030f48000
RDX: 0000000000000000 RSI: 0000000000000c00 RDI: 0000000000000400
RBP: ffffc90003d97be0 R08: ffff888074a1b39b R09: 1ffff1100e943673
R10: dffffc0000000000 R11: ffffed100e943674 R12: 0000000000000001
R13: 1ffff920007b2f64 R14: 0000000000000400 R15: 0000000000000c00
FS:  00007f2288dcb6c0(0000) GS:ffff888125454000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae7ae2f000 CR3: 0000000078c3d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_setattr+0x3a1/0x5a0 fs/udf/file.c:238
 notify_change+0xc1a/0xf40 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 do_ftruncate+0x4db/0x5c0 fs/open.c:196
 do_sys_ftruncate fs/open.c:208 [inline]
 __do_sys_ftruncate fs/open.c:213 [inline]
 __se_sys_ftruncate fs/open.c:211 [inline]
 __x64_sys_ftruncate+0x92/0xf0 fs/open.c:211
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f228806e3b9
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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2288dcb078 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f22881abf80 RCX: 00007f228806e3b9
RDX: 0000000000000000 RSI: 00000000000007fa RDI: 0000000000000004
RBP: 00007f22880cf498 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f22881abf80 R15: 00007ffd7159b6d8
 </TASK>