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BUG: KASAN: use-after-free in udf_close_lvid.isra.0+0x4a7/0x550 fs/udf/super.c:2073
Write of size 1 at addr ffff88809e03be98 by task syz-executor203/5079

CPU: 0 PID: 5079 Comm: syz-executor203 Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:306 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:417
 kasan_report+0xc0/0xf0 mm/kasan/report.c:517
 udf_close_lvid.isra.0+0x4a7/0x550 fs/udf/super.c:2073
 udf_put_super+0x1bb/0x230 fs/udf/super.c:2360
 generic_shutdown_super+0x158/0x410 fs/super.c:492
 kill_block_super+0x9b/0xf0 fs/super.c:1386
 deactivate_locked_super+0x98/0x160 fs/super.c:332
 deactivate_super+0xb1/0xd0 fs/super.c:363
 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1177
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xb17/0x2a90 kernel/exit.c:867
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
 __do_sys_exit_group kernel/exit.c:1023 [inline]
 __se_sys_exit_group kernel/exit.c:1021 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1021
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe088574b49
Code: Unable to access opcode bytes at 0x7fe088574b1f.
RSP: 002b:00007ffe89e5b758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe0885ea410 RCX: 00007fe088574b49
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000001
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 00007fe0885ea410
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0002780ec0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9e03b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0002780ec8 ffffea0002780ec8 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:
 ffff88809e03bd80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809e03be00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88809e03be80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                            ^
 ffff88809e03bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809e03bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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