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BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea0005285918 of 8 bytes by task 4797 on cpu 1:
 page_cache_delete mm/filemap.c:152 [inline]
 __filemap_remove_folio+0x1ac/0x2c0 mm/filemap.c:232
 filemap_remove_folio+0x6b/0x1f0 mm/filemap.c:264
 truncate_inode_folio+0x42/0x50 mm/truncate.c:162
 shmem_undo_range+0x25b/0xa70 mm/shmem.c:1036
 shmem_truncate_range mm/shmem.c:1152 [inline]
 shmem_evict_inode+0x14d/0x530 mm/shmem.c:1280
 evict+0x2f0/0x570 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput+0x42a/0x5b0 fs/inode.c:1972
 dentry_unlink_inode+0x24f/0x260 fs/dcache.c:422
 __dentry_kill+0x18b/0x4c0 fs/dcache.c:625
 dput+0x5c/0xd0 fs/dcache.c:867
 __fput+0x3fb/0x6d0 fs/file_table.c:458
 __fput_sync+0x96/0xc0 fs/file_table.c:535
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close+0x109/0x1b0 fs/open.c:1539
 __x64_sys_close+0x1f/0x30 fs/open.c:1539
 x64_sys_call+0x266c/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffea0005285918 of 8 bytes by task 4798 on cpu 0:
 folio_mapping+0xa0/0x120 mm/util.c:847
 folio_evictable mm/internal.h:435 [inline]
 lru_add+0x89/0x440 mm/swap.c:136
 folio_batch_move_lru+0x15f/0x230 mm/swap.c:168
 lru_add_drain_cpu+0x7c/0x260 mm/swap.c:616
 lru_add_drain+0x26/0x80 mm/swap.c:698
 exit_mmap+0x158/0x680 mm/mmap.c:1662
 __mmput+0x28/0x1d0 kernel/fork.c:1353
 mmput+0x4c/0x60 kernel/fork.c:1375
 exit_mm+0xe4/0x190 kernel/exit.c:570
 do_exit+0x55e/0x17f0 kernel/exit.c:925
 do_group_exit+0x102/0x150 kernel/exit.c:1087
 get_signal+0xeb9/0x1000 kernel/signal.c:3016
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x62/0x120 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0xffff888109aa9078 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 4798 Comm: syz.9.21863 Tainted: G        W          6.12.0-syzkaller-10740-g509f806f7f70 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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