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BUG: KASAN: use-after-free in udf_close_lvid+0x6a4/0x9a0 fs/udf/super.c:2076
Write of size 1 at addr ffff88809da2df38 by task syz-executor.2/31980

CPU: 0 PID: 31980 Comm: syz-executor.2 Not tainted 5.15.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 udf_close_lvid+0x6a4/0x9a0 fs/udf/super.c:2076
 udf_put_super+0xc9/0x160 fs/udf/super.c:2363
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_block_super+0x7a/0xe0 fs/super.c:1414
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0x6a3/0x2480 kernel/exit.c:872
 do_group_exit+0x144/0x310 kernel/exit.c:994
 get_signal+0xc66/0x14e0 kernel/signal.c:2889
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd843ebdfb5
Code: Unable to access opcode bytes at RIP 0x7fd843ebdf8b.
RSP: 002b:00007fd842414010 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fd843fb1f80 RCX: 00007fd843ebdfb5
RDX: 00007fd842414050 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd843ede47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd843fb1f80 R15: 00007ffd9a96ef38
 </TASK>

The buggy address belongs to the page:
page:ffffea0002768b40 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x100 pfn:0x9da2d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00026856c8 ffffea0000b770c8 0000000000000000
raw: 0000000000000100 0000000000000000 00000000ffffff7f 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x1101cca(GFP_HIGHUSER_MOVABLE|__GFP_WRITE), pid 16628, ts 2789147306271, free_ts 2790317349455
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421
 __page_cache_alloc+0xd4/0x4a0 mm/filemap.c:1022
 pagecache_get_page+0xa91/0x1010 mm/filemap.c:1940
 grab_cache_page_write_begin+0x57/0x90 mm/filemap.c:3730
 ext4_da_write_begin+0x599/0xb60 fs/ext4/inode.c:2980
 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
 ext4_buffered_write_iter+0x227/0x360 fs/ext4/file.c:268
 ext4_file_write_iter+0x87c/0x1990
 __kernel_write+0x5b1/0xa60 fs/read_write.c:539
 __dump_emit+0x264/0x3a0 fs/coredump.c:875
 dump_user_range+0x91/0x320 fs/coredump.c:949
 elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
 do_coredump+0x1852/0x31e0 fs/coredump.c:826
 get_signal+0xc06/0x14e0 kernel/signal.c:2875
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
 free_unref_page_list+0x1f7/0x8e0 mm/page_alloc.c:3433
 release_pages+0x1bb9/0x1f40 mm/swap.c:963
 __pagevec_release+0x80/0xf0 mm/swap.c:983
 pagevec_release include/linux/pagevec.h:81 [inline]
 truncate_inode_pages_range+0x48b/0x1290 mm/truncate.c:329
 ext4_evict_inode+0x2ae/0x1100 fs/ext4/inode.c:224
 evict+0x2a4/0x620 fs/inode.c:587
 __dentry_kill+0x436/0x650 fs/dcache.c:582
 dentry_kill+0xbb/0x290
 dput+0x1f1/0x420 fs/dcache.c:888
 __fput+0x5ec/0x890 fs/file_table.c:288
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0x6a3/0x2480 kernel/exit.c:872
 do_group_exit+0x144/0x310 kernel/exit.c:994
 get_signal+0xc66/0x14e0 kernel/signal.c:2889
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867

Memory state around the buggy address:
 ffff88809da2de00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809da2de80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88809da2df00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                        ^
 ffff88809da2df80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88809da2e000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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