loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
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BUG: KASAN: use-after-free in udf_close_lvid+0x6a8/0x9a0 fs/udf/super.c:2072
Write of size 1 at addr ffff888097234790 by task syz-executor187/5063

CPU: 0 PID: 5063 Comm: syz-executor187 Not tainted 6.2.0-rc7-syzkaller-00018-g0983f6bf2bfc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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:306 [inline]
 print_report+0x163/0x4f0 mm/kasan/report.c:417
 kasan_report+0x13a/0x170 mm/kasan/report.c:517
 udf_close_lvid+0x6a8/0x9a0 fs/udf/super.c:2072
 udf_put_super+0xcd/0x160 fs/udf/super.c:2359
 generic_shutdown_super+0x134/0x310 fs/super.c:492
 kill_block_super+0x7e/0xe0 fs/super.c:1386
 deactivate_locked_super+0xa4/0x110 fs/super.c:332
 cleanup_mnt+0x490/0x520 fs/namespace.c:1291
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x605/0x2210 kernel/exit.c:867
 do_group_exit+0x206/0x2c0 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+0x3f/0x40 kernel/exit.c:1021
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fae4bde8ea9
Code: Unable to access opcode bytes at 0x7fae4bde8e7f.
RSP: 002b:00007ffd7b6b5ea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fae4be5e3f0 RCX: 00007fae4bde8ea9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fae4be58e40
R10: 0000000000010001 R11: 0000000000000246 R12: 00007fae4be5e3f0
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00025c8d00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x97234
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00025c8d08 ffffea00025c8d08 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:
 ffff888097234680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888097234700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888097234780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                         ^
 ffff888097234800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888097234880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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