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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 ffff888072aa6000 by task syz-executor329/5038

CPU: 1 PID: 5038 Comm: syz-executor329 Not tainted 6.5.0-rc5-next-20230809-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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+0x3b/0x70 fs/super.c:1440
 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
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x210/0x240 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: 0033:0x7fa43fe11647
Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffca44dcf58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000000000001468d RCX: 00007fa43fe11647
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffca44dd010
RBP: 00007ffca44dd010 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffca44de080
R13: 0000555556d566c0 R14: 431bde82d7b634db R15: 00007ffca44de0a0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0001caa980 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x72aa6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001d30988 ffffea0001ff2108 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 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5044, tgid 5044 (syz-executor329), ts 83732675716, free_ts 83752353263
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1567
 prep_new_page mm/page_alloc.c:1574 [inline]
 get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3253
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4509
 __folio_alloc+0x16/0x40 mm/page_alloc.c:4541
 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2259
 shmem_alloc_folio+0xb5/0x170 mm/shmem.c:1668
 shmem_alloc_and_acct_folio+0xcb/0x140 mm/shmem.c:1693
 shmem_get_folio_gfp+0xbca/0x1850 mm/shmem.c:2030
 shmem_get_folio mm/shmem.c:2153 [inline]
 shmem_write_begin+0x15c/0x390 mm/shmem.c:2693
 generic_perform_write+0x278/0x600 mm/filemap.c:3945
 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4040
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4066
 call_write_iter include/linux/fs.h:1982 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x650/0xe40 fs/read_write.c:584
 ksys_write+0x12f/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1158 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2380
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2521
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 __folio_batch_release+0x77/0xe0 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 shmem_undo_range+0x580/0x1140 mm/shmem.c:1016
 shmem_truncate_range mm/shmem.c:1125 [inline]
 shmem_evict_inode+0x334/0xb00 mm/shmem.c:1253
 evict+0x2ed/0x6b0 fs/inode.c:665
 iput_final fs/inode.c:1791 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1817
 iput+0x5c/0x80 fs/inode.c:1807
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 dentry_kill fs/dcache.c:733 [inline]
 dput+0x8dd/0xfd0 fs/dcache.c:913
 __fput+0x536/0xac0 fs/file_table.c:392
 __fput_sync+0x47/0x50 fs/file_table.c:465
 __do_sys_close fs/open.c:1572 [inline]
 __se_sys_close fs/open.c:1557 [inline]
 __x64_sys_close+0x87/0xf0 fs/open.c:1557
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff888072aa5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888072aa5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888072aa6000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff888072aa6080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888072aa6100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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