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BUG: KASAN: use-after-free in crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
Read of size 1 at addr ffff88805a709000 by task syz-executor.5/7729

CPU: 0 PID: 7729 Comm: syz-executor.5 Not tainted 6.5.0-rc2-next-20230718-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
 udf_finalize_lvid+0xf2/0x1f0 fs/udf/super.c:1984
 udf_sync_fs+0xea/0x150 fs/udf/super.c:2340
 sync_filesystem fs/sync.c:56 [inline]
 sync_filesystem+0x109/0x280 fs/sync.c:30
 generic_shutdown_super+0x74/0x480 fs/super.c:472
 kill_block_super+0x64/0xb0 fs/super.c:1417
 deactivate_locked_super+0x9a/0x170 fs/super.c:330
 deactivate_super+0xde/0x100 fs/super.c:361
 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
 task_work_run+0x14d/0x240 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa99/0x2a20 kernel/exit.c:874
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x23d1/0x27b0 kernel/signal.c:2888
 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd34e2a7f35
Code: Unable to access opcode bytes at 0x7fd34e2a7f0b.
RSP: 002b:00007fd34f059010 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fd34e39bf80 RCX: 00007fd34e2a7f35
RDX: 00007fd34f059050 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd34e2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd34e39bf80 R15: 00007fff9053e9b8
 </TASK>

The buggy address belongs to the physical page:
page:ffffea000169c240 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x5a709
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001016e88 ffffea0000b50bc8 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 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 30888, tgid 30881 (syz-executor.2), ts 3023116647469, free_ts 3024193208857
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1569
 prep_new_page mm/page_alloc.c:1576 [inline]
 get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3256
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4512
 __folio_alloc+0x16/0x40 mm/page_alloc.c:4544
 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2240
 wp_page_copy mm/memory.c:3089 [inline]
 do_wp_page+0x1241/0x3340 mm/memory.c:3455
 handle_pte_fault mm/memory.c:4972 [inline]
 __handle_mm_fault+0x1d26/0x40b0 mm/memory.c:5096
 handle_mm_fault+0x47a/0xa00 mm/memory.c:5261
 do_user_addr_fault+0x3ad/0xfe0 arch/x86/mm/fault.c:1393
 handle_page_fault arch/x86/mm/fault.c:1487 [inline]
 exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1543
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1160 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2383
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2524
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:97
 zap_pte_range mm/memory.c:1536 [inline]
 zap_pmd_range mm/memory.c:1575 [inline]
 zap_pud_range mm/memory.c:1604 [inline]
 zap_p4d_range mm/memory.c:1625 [inline]
 unmap_page_range+0x21aa/0x3320 mm/memory.c:1646
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1692
 unmap_vmas+0x267/0x3c0 mm/memory.c:1732
 exit_mmap+0x1a7/0x960 mm/mmap.c:3197
 __mmput+0x12a/0x4d0 kernel/fork.c:1356
 mmput+0x62/0x70 kernel/fork.c:1378
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9b4/0x2a20 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x23d1/0x27b0 kernel/signal.c:2888
 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297

Memory state around the buggy address:
 ffff88805a708f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88805a708f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88805a709000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88805a709080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88805a709100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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