------------[ cut here ]------------
iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB
WARNING: fs/udf/inode.c:355 at udf_map_block+0x38d3/0x4270 fs/udf/inode.c:355, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:udf_map_block+0x38d3/0x4270 fs/udf/inode.c:355
Code: 52 2d 10 48 3b 84 24 60 03 00 00 75 4e 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c4 7a 81 08 cc e8 4e ee 5f fe 90 <0f> 0b 90 41 be 8b ff ff ff 48 8b 9c 24 88 00 00 00 eb a5 44 89 e1
RSP: 0018:ffffc9000e2aefe0 EFLAGS: 00010293
RAX: ffffffff8367dde2 RBX: 0000000000000003 RCX: ffff88801f8d2580
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: ffffc9000e2af390 R08: ffff88801f8d2580 R09: 0000000000000007
R10: 0000000000000006 R11: ffffffff8367e790 R12: ffff888044004050
R13: ffff8880440041b8 R14: dffffc0000000000 R15: ffffc9000e2af3a8
FS:  00007f025d70d6c0(0000) GS:ffff88808c2cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 000000001227b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __udf_get_block+0x52/0x250 fs/udf/inode.c:476
 get_more_blocks fs/direct-io.c:644 [inline]
 do_direct_IO fs/direct-io.c:932 [inline]
 __blockdev_direct_IO+0x1590/0x3380 fs/direct-io.c:1236
 blockdev_direct_IO include/linux/fs.h:3155 [inline]
 udf_direct_IO+0x139/0x200 fs/udf/inode.c:309
 generic_file_read_iter+0x33a/0x560 mm/filemap.c:2993
 copy_splice_read+0x5ff/0xaa0 fs/splice.c:362
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4b6/0xcb0 fs/splice.c:1084
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x52e/0x7c0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1426 [inline]
 __se_sys_sendfile64+0xdf/0x1a0 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025c79e159
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:00007f025d70cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f025ca26180 RCX: 00007f025c79e159
RDX: 0000200000000080 RSI: 0000000000000008 RDI: 0000000000000008
RBP: 00007f025c835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007f03 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f025ca26218 R14: 00007f025ca26180 R15: 00007ffceb9a84c8
 </TASK>