------------[ cut here ]------------
WARNING: CPU: 0 PID: 5315 at fs/udf/inode.c:2077 __udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2076
Modules linked in:
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.15.0-rc3-syzkaller-00244-gc3137514f1f1 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2076
Code: 5f 5d c3 cc cc cc cc cc e8 3d cc 8d fe 90 0f 0b 90 e9 14 fc ff ff e8 2f cc 8d fe 90 0f 0b 90 e9 66 fd ff ff e8 21 cc 8d fe 90 <0f> 0b 90 e9 50 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c f7
RSP: 0018:ffffc9000d416e60 EFLAGS: 00010293
RAX: ffffffff8331f27f RBX: dffffc0000000000 RCX: ffff88801f4a2440
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000000
RBP: 0000000000000010 R08: ffff88801f4a2440 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000000b0
R13: 0000000000000000 R14: ffffc9000d417280 R15: 0000000000000000
FS:  00007f268360a6c0(0000) GS:ffff88808d6cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000e0c0 CR3: 0000000042302000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2138 [inline]
 udf_do_extend_file+0x576/0x1180 fs/udf/inode.c:544
 inode_getblk fs/udf/inode.c:836 [inline]
 udf_map_block+0xf64/0x42a0 fs/udf/inode.c:447
 __udf_get_block+0x52/0x250 fs/udf/inode.c:461
 __block_write_begin_int+0x6b2/0x1900 fs/buffer.c:2116
 block_write_begin+0x8a/0x120 fs/buffer.c:2227
 udf_write_begin+0x100/0x260 fs/udf/inode.c:256
 generic_perform_write+0x2c4/0x910 mm/filemap.c:4103
 __generic_file_write_iter+0x1ae/0x230 mm/filemap.c:4217
 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111
 iter_file_splice_write+0x937/0x1000 fs/splice.c:738
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0xfe/0x160 fs/splice.c:1158
 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1227
 do_sendfile+0x4da/0x7d0 fs/read_write.c:1368
 __do_sys_sendfile64 fs/read_write.c:1429 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1415
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f268278e969
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:00007f268360a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f26829b6160 RCX: 00007f268278e969
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: 00007f2682810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f26829b6160 R15: 00007fff70c08058
 </TASK>