UDF-fs: error (device loop0): udf_read_inode: (ino 833) failed !bh
UDF-fs: error (device loop0): udf_read_inode: (ino 833) failed !bh
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BUG: KASAN: use-after-free in udf_close_lvid+0x674/0x990 fs/udf/super.c:2108
Write of size 1 at addr ffff88808ca2c098 by task syz-executor/4959

CPU: 0 PID: 4959 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 udf_close_lvid+0x674/0x990 fs/udf/super.c:2108
 udf_put_super+0xc8/0x160 fs/udf/super.c:2395
 generic_shutdown_super+0x130/0x300 fs/super.c:475
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1139
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x61e/0x20a0 kernel/exit.c:883
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc856ccabe9
Code: Unable to access opcode bytes at RIP 0x7fc856ccabbf.
RSP: 002b:00007fff2cef4998 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fc856d4dc2a RCX: 00007fc856ccabe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000005 R08: 00007fff2cef2737 R09: 00007fff2cef5c50
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff2cef5c50
R13: 00007fc856d4dc05 R14: 0000000000018b20 R15: 00007fff2cef6d20
 </TASK>

The buggy address belongs to the page:
page:ffffea0002328b00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8ca2c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0002328b08 ffffea0002328b08 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:
 ffff88808ca2bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88808ca2c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88808ca2c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                            ^
 ffff88808ca2c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88808ca2c180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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