------------[ cut here ]------------
le32_to_cpu(aed->lengthAllocDescs) != epos->offset - sizeof(struct allocExtDesc)
WARNING: fs/udf/inode.c:2086 at __udf_add_aext+0x52b/0x6e0 fs/udf/inode.c:2085, CPU#1: syz.7.9278/909
Modules linked in:
CPU: 1 UID: 0 PID: 909 Comm: syz.7.9278 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__udf_add_aext+0x52b/0x6e0 fs/udf/inode.c:2085
Code: 81 c4 48 ff ff ff 4c 89 e6 e8 a1 51 ff fe 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 67 f4 b8 fd cc e8 26 75 6e fe 90 <0f> 0b 90 e9 0d fc ff ff e8 18 75 6e fe 90 0f 0b 90 e9 5f fd ff ff
RSP: 0018:ffffc9000f257808 EFLAGS: 00010287
RAX: ffffffff83574caa RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90006663000 RSI: 000000000003a338 RDI: 000000000003a339
RBP: 1ffff92001e4af6d R08: ffff88801bb0bd80 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000003d0
R13: 0000000000000000 R14: ffffc9000f257b60 R15: ffffc9000f257b68
FS:  00007f2cb29d56c0(0000) GS:ffff88812538d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fc1aff8 CR3: 000000002b2c5000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x60d/0x800 fs/udf/inode.c:2048
 udf_add_aext fs/udf/inode.c:2138 [inline]
 udf_do_extend_file+0x8a5/0x11e0 fs/udf/inode.c:590
 udf_extend_file fs/udf/inode.c:711 [inline]
 udf_setsize+0xbf3/0x10b0 fs/udf/inode.c:1298
 udf_setattr+0x3a1/0x5a0 fs/udf/file.c:245
 notify_change+0xc1a/0xf40 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 do_ftruncate+0x490/0x540 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cb479cdd9
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:00007f2cb29d5028 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f2cb4a16090 RCX: 00007f2cb479cdd9
RDX: 0000000000000000 RSI: 0000008002007ffb RDI: 0000000000000005
RBP: 00007f2cb4832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2cb4a16128 R14: 00007f2cb4a16090 R15: 00007ffdb2b825f8
 </TASK>