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BUG: KASAN: use-after-free in udf_close_lvid+0x6a8/0x9a0 fs/udf/super.c:2039
Write of size 1 at addr ffff888187776f68 by task syz-executor.4/5007

CPU: 1 PID: 5007 Comm: syz-executor.4 Not tainted 6.3.0-syzkaller-04626-g0cfd8703e7da #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 udf_close_lvid+0x6a8/0x9a0 fs/udf/super.c:2039
 udf_put_super+0xcd/0x160 fs/udf/super.c:2326
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x7e/0xe0 fs/super.c:1407
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f920e88d5d7
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd1565a3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f920e88d5d7
RDX: 00007ffd1565a4ac RSI: 000000000000000a RDI: 00007ffd1565a4a0
RBP: 00007ffd1565a4a0 R08: 00000000ffffffff R09: 00007ffd1565a270
R10: 0000555556384893 R11: 0000000000000246 R12: 00007f920e8e6cdc
R13: 00007ffd1565b560 R14: 0000555556384810 R15: 00007ffd1565b5a0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00061ddd80 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x187776
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff00000000000 ffffea00061ddd88 ffffea00061ddd88 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff888187776e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888187776e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888187776f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                          ^
 ffff888187776f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888187777000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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