------------[ cut here ]------------
WARNING: CPU: 0 PID: 5323 at fs/udf/inode.c:2080 __udf_add_aext+0x555/0x700 fs/udf/inode.c:2079
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0
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+0x555/0x700 fs/udf/inode.c:2079
Code: f0 d9 fe 49 8b 3c 24 4c 89 fe e8 c6 66 fe fe 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 4c 33 70 fe 90 <0f> 0b 90 e9 e7 fb ff ff e8 3e 33 70 fe 90 0f 0b 90 e9 54 fc ff ff
RSP: 0018:ffffc9000d46ef78 EFLAGS: 00010293
RAX: ffffffff8324a544 RBX: 1ffff92001a8debd RCX: ffff88801f920000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001d0
RBP: 00000000000001d0 R08: ffffffff8324a126 R09: ffffffff8324a056
R10: 0000000000000002 R11: ffff88801f920000 R12: ffffc9000d46f5e0
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc9000d46f5e8
FS:  00007f63710c16c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63710c0f98 CR3: 000000004f5bc000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x7c0/0xb40 fs/udf/inode.c:2042
 udf_add_aext fs/udf/inode.c:2132 [inline]
 udf_do_extend_file+0x8dd/0x1280 fs/udf/inode.c:584
 inode_getblk fs/udf/inode.c:835 [inline]
 udf_map_block+0x1896/0x5340 fs/udf/inode.c:447
 __udf_get_block+0x126/0x410 fs/udf/inode.c:461
 __block_write_begin_int+0x50c/0x1a70 fs/buffer.c:2121
 block_write_begin+0x8f/0x120 fs/buffer.c:2231
 udf_write_begin+0x104/0x350 fs/udf/inode.c:256
 generic_perform_write+0x344/0x6d0 mm/filemap.c:4054
 udf_file_write_iter+0x2fc/0x660 fs/udf/file.c:111
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xaeb/0xd30 fs/read_write.c:683
 ksys_pwrite64 fs/read_write.c:798 [inline]
 __do_sys_pwrite64 fs/read_write.c:808 [inline]
 __se_sys_pwrite64 fs/read_write.c:805 [inline]
 __x64_sys_pwrite64+0x1aa/0x230 fs/read_write.c:805
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f637037e719
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:00007f63710c1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f6370536058 RCX: 00007f637037e719
RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f63703f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6370536058 R15: 00007ffe011770a8
 </TASK>