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BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea000420c4d8 of 8 bytes by task 23013 on cpu 1:
 page_cache_delete mm/filemap.c:142 [inline]
 __filemap_remove_folio+0x1b7/0x2c0 mm/filemap.c:228
 filemap_remove_folio+0x69/0x210 mm/filemap.c:262
 truncate_inode_folio+0x14c/0x160 mm/truncate.c:224
 truncate_inode_pages_range+0x6a2/0x8b0 mm/truncate.c:437
 truncate_inode_pages+0x20/0x30 mm/truncate.c:466
 kill_bdev block/bdev.c:78 [inline]
 set_blocksize+0x24e/0x270 block/bdev.c:158
 sb_set_blocksize block/bdev.c:167 [inline]
 sb_min_blocksize+0x92/0x110 block/bdev.c:183
 fat_fill_super+0xe95/0x2af0 fs/fat/inode.c:1646
 vfat_fill_super+0x2c/0x40 fs/fat/namei_vfat.c:1051
 mount_bdev+0x1e8/0x290 fs/super.c:1370
 vfat_mount+0x2d/0x40 fs/fat/namei_vfat.c:1058
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1500
 do_new_mount fs/namespace.c:2994 [inline]
 path_mount+0x11cf/0x1c40 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3522
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea000420c4d8 of 8 bytes by task 23004 on cpu 0:
 folio_mapping+0x92/0x120 mm/util.c:715
 folio_evictable mm/internal.h:121 [inline]
 __pagevec_lru_add_fn+0x81/0x380 mm/swap.c:1043
 __pagevec_lru_add+0x1c3/0x270 mm/swap.c:1071
 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:613
 lru_add_drain+0x21/0x60 mm/swap.c:717
 follow_page_pte mm/gup.c:590 [inline]
 follow_pmd_mask mm/gup.c:673 [inline]
 follow_pud_mask mm/gup.c:756 [inline]
 follow_p4d_mask mm/gup.c:782 [inline]
 follow_page_mask+0xdc5/0x1000 mm/gup.c:841
 __get_user_pages+0x339/0xc80 mm/gup.c:1163
 populate_vma_page_range mm/gup.c:1497 [inline]
 __mm_populate+0x24d/0x370 mm/gup.c:1606
 mm_populate include/linux/mm.h:2675 [inline]
 __do_sys_mlockall+0x24b/0x2d0 mm/mlock.c:800
 __se_sys_mlockall mm/mlock.c:776 [inline]
 __x64_sys_mlockall+0x1a/0x20 mm/mlock.c:776
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffff8881004a2bb0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23004 Comm: syz-executor.4 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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