syzbot

FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
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BUG: KCSAN: data-race in folio_mapping / page_cache_delete

write to 0xffffea00050332d8 of 8 bytes by task 3192 on cpu 1:
 page_cache_delete+0x33e/0x390 mm/filemap.c:143
 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223
 invalidate_complete_folio2 mm/truncate.c:594 [inline]
 invalidate_inode_pages2_range+0x450/0x670 mm/truncate.c:682
 generic_file_direct_write+0x209/0x400 mm/filemap.c:3657
 __generic_file_write_iter+0x11f/0x280 mm/filemap.c:3829
 generic_file_write_iter+0x79/0x1c0 mm/filemap.c:3905
 do_iter_write+0x494/0x750 fs/read_write.c:861
 vfs_iter_write+0x4c/0x70 fs/read_write.c:902
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:931
 splice_direct_to_actor+0x305/0x620 fs/splice.c:886
 do_splice_direct+0xfb/0x180 fs/splice.c:974
 do_sendfile+0x3bf/0x910 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffea00050332d8 of 8 bytes by task 3190 on cpu 0:
 folio_mapping+0x8e/0x110 mm/util.c:810
 folio_evictable mm/internal.h:136 [inline]
 lru_add_fn+0x12e/0x520 mm/swap.c:210
 folio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246
 lru_add_drain_cpu+0x73/0x250 mm/swap.c:626
 lru_add_drain+0x21/0x60 mm/swap.c:730
 __pagevec_release+0x3a/0x70 mm/swap.c:1029
 pagevec_release include/linux/pagevec.h:71 [inline]
 __filemap_fdatawait_range+0x1f1/0x260 mm/filemap.c:527
 filemap_write_and_wait_range+0xfc/0x1d0 mm/filemap.c:682
 __generic_file_write_iter+0x19d/0x280 mm/filemap.c:3859
 generic_file_write_iter+0x79/0x1c0 mm/filemap.c:3905
 do_iter_write+0x494/0x750 fs/read_write.c:861
 vfs_iter_write+0x4c/0x70 fs/read_write.c:902
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:931
 splice_direct_to_actor+0x305/0x620 fs/splice.c:886
 do_splice_direct+0xfb/0x180 fs/splice.c:974
 do_sendfile+0x3bf/0x910 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff88810aeed810 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3190 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-09039-ga6afa4199d3d-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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