loop0: detected capacity change from 0 to 1024
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
!buffer_uptodate(bh)
WARNING: fs/buffer.c:1180 at mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180, CPU#0: syz.0.0/5318
Modules linked in:
CPU: 0 UID: 0 PID: 5318 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:mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180
Code: 4c 89 f7 e8 e9 fc d9 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 c4 60 fb ff e8 7f 1c 6e ff eb 8c e8 78 1c 6e ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 6a 1c 6e ff 90 0f 0b 90 e9 cf fd ff ff
RSP: 0018:ffffc9000e10ed90 EFLAGS: 00010293
RAX: ffffffff8257b318 RBX: ffff888047e6b9f8 RCX: ffff888000178000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000e10f001 R08: ffff888047e6b9ff R09: 1ffff11008fcd73f
R10: dffffc0000000000 R11: ffffed1008fcd740 R12: ffff88801bbd4000
R13: 00000000000000c7 R14: 0000000000000187 R15: ffffc9000e10f320
FS:  00007f2e761ce6c0(0000) GS:ffff88808ca49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e754c41a0 CR3: 00000000127e3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 udf_bitmap_new_block fs/udf/balloc.c:347 [inline]
 udf_new_block+0x183b/0x1c70 fs/udf/balloc.c:721
 inode_getblk fs/udf/inode.c:899 [inline]
 udf_map_block+0x1375/0x4330 fs/udf/inode.c:451
 __udf_get_block+0x52/0x250 fs/udf/inode.c:465
 __block_write_begin_int+0x6c6/0x1910 fs/buffer.c:2142
 block_write_begin+0x8d/0x120 fs/buffer.c:2253
 udf_write_begin+0x118/0x270 fs/udf/inode.c:259
 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4324
 __generic_file_write_iter+0x1ae/0x230 mm/filemap.c:4438
 udf_file_write_iter+0x2ca/0x6b0 fs/udf/file.c:112
 iter_file_splice_write+0x9a1/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x535/0x7d0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 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: 0033:0x7f2e7539c819
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:00007f2e761cdfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f2e75615fa0 RCX: 00007f2e7539c819
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006
RBP: 00007f2e761ce050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f2e75616038 R14: 00007f2e75615fa0 R15: 00007ffcadae4aa8
 </TASK>