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BUG: KASAN: use-after-free in crc_itu_t+0x21c/0x2a0 lib/crc-itu-t.c:60
Read of size 1 at addr ffff88804f94d000 by task syz-executor.3/5046

CPU: 1 PID: 5046 Comm: syz-executor.3 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #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:351 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:462
 kasan_report+0x176/0x1b0 mm/kasan/report.c:572
 crc_itu_t+0x21c/0x2a0 lib/crc-itu-t.c:60
 udf_finalize_lvid fs/udf/super.c:1988 [inline]
 udf_sync_fs+0x1d2/0x380 fs/udf/super.c:2344
 sync_filesystem+0xec/0x220 fs/sync.c:56
 generic_shutdown_super+0x6f/0x340 fs/super.c:473
 kill_block_super+0x84/0xf0 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: 0033:0x7f98ee48d5d7
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:00007ffe68daa408 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f98ee48d5d7
RDX: 00007ffe68daa4dc RSI: 000000000000000a RDI: 00007ffe68daa4d0
RBP: 00007ffe68daa4d0 R08: 00000000ffffffff R09: 00007ffe68daa2a0
R10: 000055555570e893 R11: 0000000000000246 R12: 00007f98ee4e6cdc
R13: 00007ffe68dab590 R14: 000055555570e810 R15: 00007ffe68dab5d0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00013e5340 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x4f94d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001440248 ffffea0000d9efc8 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 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 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 5409, tgid 5407 (syz-executor.1), ts 2505361815140, free_ts 2505701226578
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731
 prep_new_page mm/page_alloc.c:1738 [inline]
 get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768
 folio_alloc+0x1e/0x60 mm/mempolicy.c:2289
 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976
 __filemap_get_folio+0x323/0xa00 mm/filemap.c:1965
 pagecache_get_page+0x2e/0x220 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:635 [inline]
 grow_dev_page fs/buffer.c:995 [inline]
 grow_buffers fs/buffer.c:1060 [inline]
 __getblk_slow fs/buffer.c:1087 [inline]
 __getblk_gfp+0x211/0xcc0 fs/buffer.c:1382
 __bread_gfp+0x2e/0x380 fs/buffer.c:1416
 sb_bread include/linux/buffer_head.h:347 [inline]
 udf_read_tagged+0xa6/0xe00 fs/udf/misc.c:203
 udf_process_sequence+0x285/0x4e70 fs/udf/super.c:1711
 udf_load_sequence fs/udf/super.c:1824 [inline]
 udf_check_anchor_block+0x2a6/0x550 fs/udf/super.c:1859
 udf_scan_anchors fs/udf/super.c:1892 [inline]
 udf_load_vrs+0x5ca/0x1100 fs/udf/super.c:1973
 udf_fill_super+0x95d/0x23a0 fs/udf/super.c:2151
 mount_bdev+0x274/0x3a0 fs/super.c:1380
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1302 [inline]
 free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2564
 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2705
 release_pages+0x2193/0x2470 mm/swap.c:1042
 __pagevec_release+0x84/0x100 mm/swap.c:1062
 pagevec_release include/linux/pagevec.h:63 [inline]
 folio_batch_release include/linux/pagevec.h:132 [inline]
 truncate_inode_pages_range+0x45d/0x11b0 mm/truncate.c:372
 kill_bdev block/bdev.c:76 [inline]
 blkdev_flush_mapping+0x15a/0x2b0 block/bdev.c:596
 blkdev_put_whole block/bdev.c:627 [inline]
 blkdev_put+0x4b8/0x750 block/bdev.c:887
 blkdev_close+0x5a/0x80 block/fops.c:507
 __fput+0x3b7/0x890 fs/file_table.c:321
 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

Memory state around the buggy address:
 ffff88804f94cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88804f94cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88804f94d000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88804f94d080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88804f94d100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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