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BUG: KASAN: use-after-free in crc_itu_t+0xd2/0xe0 lib/crc-itu-t.c:60
Read of size 1 at addr ffff88803dc40000 by task syz-executor.2/8773

CPU: 0 PID: 8773 Comm: syz-executor.2 Not tainted 6.3.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:319
 print_report mm/kasan/report.c:430 [inline]
 kasan_report+0x11c/0x130 mm/kasan/report.c:536
 crc_itu_t+0xd2/0xe0 lib/crc-itu-t.c:60
 udf_finalize_lvid+0xe0/0x1d0 fs/udf/super.c:1988
 udf_sync_fs+0xea/0x150 fs/udf/super.c:2344
 sync_fs_one_sb fs/sync.c:84 [inline]
 sync_fs_one_sb+0x10b/0x150 fs/sync.c:80
 iterate_supers+0x140/0x2a0 fs/super.c:745
 ksys_sync+0x9b/0x150 fs/sync.c:103
 __do_sys_sync+0xe/0x20 fs/sync.c:113
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3bbc08c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f3bbabfe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f3bbc1ac120 RCX: 00007f3bbc08c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f3bbc0e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe06b788f R14: 00007f3bbabfe300 R15: 0000000000022000
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0000f71000 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x1 pfn:0x3dc40
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0001436e08 ffffea0000f2c208 0000000000000000
raw: 0000000000000001 0000000000000003 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 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 6894, tgid 6892 (syz-executor.3), ts 435586569613, free_ts 445657438883
 prep_new_page mm/page_alloc.c:2553 [inline]
 get_page_from_freelist+0x1190/0x2e20 mm/page_alloc.c:4326
 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:5592
 __folio_alloc+0x16/0x40 mm/page_alloc.c:5624
 vma_alloc_folio+0x155/0x880 mm/mempolicy.c:2244
 wp_page_copy mm/memory.c:3064 [inline]
 do_wp_page+0x17e7/0x3520 mm/memory.c:3426
 handle_pte_fault mm/memory.c:4941 [inline]
 __handle_mm_fault+0x19a1/0x3e60 mm/memory.c:5065
 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5211
 do_user_addr_fault+0x475/0x1230 arch/x86/mm/fault.c:1407
 handle_page_fault arch/x86/mm/fault.c:1498 [inline]
 exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1554
 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:1454 [inline]
 free_pcp_prepare+0x5d5/0xa50 mm/page_alloc.c:1504
 free_unref_page_prepare mm/page_alloc.c:3388 [inline]
 free_unref_page_list+0x176/0xbc0 mm/page_alloc.c:3529
 release_pages+0xcd7/0x1380 mm/swap.c:1042
 tlb_batch_pages_flush+0xa8/0x1a0 mm/mmu_gather.c:97
 zap_pte_range mm/memory.c:1487 [inline]
 zap_pmd_range mm/memory.c:1536 [inline]
 zap_pud_range mm/memory.c:1565 [inline]
 zap_p4d_range mm/memory.c:1586 [inline]
 unmap_page_range+0x2605/0x3ce0 mm/memory.c:1607
 unmap_single_vma+0x194/0x2a0 mm/memory.c:1653
 unmap_vmas+0x234/0x380 mm/memory.c:1692
 exit_mmap+0x190/0x7f0 mm/mmap.c:3031
 __mmput+0x128/0x4c0 kernel/fork.c:1207
 mmput+0x60/0x70 kernel/fork.c:1229
 exit_mm kernel/exit.c:563 [inline]
 do_exit+0x9d7/0x2960 kernel/exit.c:856
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1019
 get_signal+0x2315/0x25b0 kernel/signal.c:2859
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 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:
 ffff88803dc3ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88803dc3ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88803dc40000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88803dc40080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88803dc40100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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