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BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping

write to 0xffffea00041673d8 of 8 bytes by task 15506 on cpu 1:
 page_cache_delete_batch mm/filemap.c:317 [inline]
 delete_from_page_cache_batch+0x309/0x710 mm/filemap.c:343
 truncate_inode_pages_range+0x1c5/0x6b0 mm/truncate.c:359
 truncate_inode_pages mm/truncate.c:439 [inline]
 truncate_pagecache mm/truncate.c:732 [inline]
 truncate_setsize+0x9b/0xc0 mm/truncate.c:757
 fat_setattr+0x720/0x840 fs/fat/file.c:550
 notify_change+0x814/0x8a0 fs/attr.c:497
 do_truncate+0x116/0x160 fs/open.c:65
 handle_truncate fs/namei.c:3308 [inline]
 do_open fs/namei.c:3658 [inline]
 path_openat+0x1c0f/0x1fa0 fs/namei.c:3813
 do_filp_open+0xf7/0x200 fs/namei.c:3840
 do_sys_openat2+0xab/0x120 fs/open.c:1413
 do_sys_open fs/open.c:1428 [inline]
 __do_sys_openat fs/open.c:1444 [inline]
 __se_sys_openat fs/open.c:1439 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1439
 x64_sys_call+0x1057/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:258
 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 0xffffea00041673d8 of 8 bytes by task 15507 on cpu 0:
 folio_mapping+0x97/0x110 mm/util.c:799
 folio_evictable mm/internal.h:353 [inline]
 lru_add_fn+0x8d/0x430 mm/swap.c:184
 folio_batch_move_lru+0x20c/0x2c0 mm/swap.c:220
 lru_add_drain_cpu+0x77/0x260 mm/swap.c:657
 lru_add_drain+0x26/0x80 mm/swap.c:757
 unmap_region+0x73/0x230 mm/mmap.c:2362
 do_vmi_align_munmap+0x6df/0xa60 mm/mmap.c:2683
 do_vmi_munmap+0x1fb/0x250 mm/mmap.c:2759
 mmap_region+0x52a/0x1620 mm/mmap.c:2810
 do_mmap+0x6f9/0xb10 mm/mmap.c:1397
 vm_mmap_pgoff+0x133/0x290 mm/util.c:573
 ksys_mmap_pgoff+0x292/0x340 mm/mmap.c:1443
 x64_sys_call+0x1835/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:10
 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

value changed: 0xffff8881089cef88 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 15507 Comm: syz.3.3756 Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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